/usr/bin/java -Xmx8000000000 -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-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 17:41:51,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 17:41:51,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 17:41:51,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 17:41:51,388 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 [2021-07-09 17:41:51,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 17:41:51,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 17:41:51,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 17:41:51,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 17:41:51,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 17:41:51,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 17:41:51,432 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 17:41:51,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 17:41:51,432 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 17:41:51,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 17:41:51,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 17:41:51,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 17:41:51,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 17:41:51,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 17:41:51,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 17:41:51,458 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 17:41:51,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 17:41:51,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 17:41:51,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 17:41:51,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 17:41:51,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 17:41:51,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 17:41:51,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 17:41:51,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 17:41:51,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 17:41:51,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 17:41:51,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 17:41:51,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 17:41:51,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 17:41:51,461 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 17:41:51,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 17:41:51,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 17:41:51,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 17:41:51,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 17:41:51,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 17:41:51,777 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 17:41:51,779 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 17:41:51,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-07-09 17:41:51,779 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-07-09 17:41:51,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 17:41:51,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 17:41:51,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 17:41:51,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 17:41:51,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 17:41:51,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:41:51" (1/1) ... [2021-07-09 17:41:51,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:41:51" (1/1) ... [2021-07-09 17:41:51,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 17:41:51,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 17:41:51,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 17:41:51,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 17:41:51,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:41:51" (1/1) ... [2021-07-09 17:41:51,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:41:51" (1/1) ... [2021-07-09 17:41:51,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:41:51" (1/1) ... [2021-07-09 17:41:51,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:41:51" (1/1) ... [2021-07-09 17:41:51,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:41:51" (1/1) ... [2021-07-09 17:41:51,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:41:51" (1/1) ... [2021-07-09 17:41:51,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:41:51" (1/1) ... [2021-07-09 17:41:51,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 17:41:51,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 17:41:51,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 17:41:51,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 17:41:51,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:41:51" (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 [2021-07-09 17:41:51,944 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 17:41:51,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 17:41:51,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 17:41:51,945 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 17:41:51,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 17:41:51,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 17:41:51,945 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 17:41:51,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 17:41:51,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 17:41:51,945 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 17:41:51,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 17:41:51,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 17:41:51,946 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 17:41:52,188 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 17:41:52,188 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 17:41:52,190 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:41:52 BoogieIcfgContainer [2021-07-09 17:41:52,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 17:41:52,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 17:41:52,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 17:41:52,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 17:41:52,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:41:51" (1/2) ... [2021-07-09 17:41:52,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4829b167 and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 05:41:52, skipping insertion in model container [2021-07-09 17:41:52,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:41:52" (2/2) ... [2021-07-09 17:41:52,213 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-07-09 17:41:52,218 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 17:41:52,218 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 17:41:52,219 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 17:41:52,219 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 17:41:52,297 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-09 17:41:52,324 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 17:41:52,342 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 17:41:52,342 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 17:41:52,343 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 17:41:52,343 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 17:41:52,343 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 17:41:52,343 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 17:41:52,343 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 17:41:52,343 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 17:41:52,354 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 53 transitions, 130 flow [2021-07-09 17:41:52,501 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3169 states, 3168 states have (on average 2.785037878787879) internal successors, (8823), 3168 states have internal predecessors, (8823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 3169 states, 3168 states have (on average 2.785037878787879) internal successors, (8823), 3168 states have internal predecessors, (8823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:41:52,549 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:41:52,550 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:41:52,551 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:41:52,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:41:52,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1320582874, now seen corresponding path program 1 times [2021-07-09 17:41:52,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:41:52,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229248485] [2021-07-09 17:41:52,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:41:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:41:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:41:52,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:41:52,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229248485] [2021-07-09 17:41:52,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229248485] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:41:52,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:41:52,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:41:52,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604445822] [2021-07-09 17:41:52,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:41:52,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:41:52,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:41:52,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:41:52,963 INFO L87 Difference]: Start difference. First operand has 3169 states, 3168 states have (on average 2.785037878787879) internal successors, (8823), 3168 states have internal predecessors, (8823), 0 states have call successors, (0), 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 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:53,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:41:53,291 INFO L93 Difference]: Finished difference Result 4259 states and 11383 transitions. [2021-07-09 17:41:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 17:41:53,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:41:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:41:53,329 INFO L225 Difference]: With dead ends: 4259 [2021-07-09 17:41:53,329 INFO L226 Difference]: Without dead ends: 4067 [2021-07-09 17:41:53,332 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 198.2ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:41:53,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2021-07-09 17:41:53,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 3212. [2021-07-09 17:41:53,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 3211 states have (on average 2.7710993459981315) internal successors, (8898), 3211 states have internal predecessors, (8898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 8898 transitions. [2021-07-09 17:41:53,592 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 8898 transitions. Word has length 48 [2021-07-09 17:41:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:41:53,593 INFO L482 AbstractCegarLoop]: Abstraction has 3212 states and 8898 transitions. [2021-07-09 17:41:53,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 8898 transitions. [2021-07-09 17:41:53,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:41:53,602 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:41:53,602 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:41:53,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 17:41:53,603 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:41:53,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:41:53,604 INFO L82 PathProgramCache]: Analyzing trace with hash 853793398, now seen corresponding path program 2 times [2021-07-09 17:41:53,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:41:53,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539688092] [2021-07-09 17:41:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:41:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:41:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:41:54,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:41:54,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539688092] [2021-07-09 17:41:54,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539688092] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:41:54,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:41:54,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 17:41:54,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883876236] [2021-07-09 17:41:54,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 17:41:54,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:41:54,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 17:41:54,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:41:54,142 INFO L87 Difference]: Start difference. First operand 3212 states and 8898 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:55,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:41:55,043 INFO L93 Difference]: Finished difference Result 7391 states and 20690 transitions. [2021-07-09 17:41:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:41:55,044 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:41:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:41:55,083 INFO L225 Difference]: With dead ends: 7391 [2021-07-09 17:41:55,083 INFO L226 Difference]: Without dead ends: 6898 [2021-07-09 17:41:55,084 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 495.3ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:41:55,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6898 states. [2021-07-09 17:41:55,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6898 to 4491. [2021-07-09 17:41:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 4490 states have (on average 2.7835189309576838) internal successors, (12498), 4490 states have internal predecessors, (12498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 12498 transitions. [2021-07-09 17:41:55,306 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 12498 transitions. Word has length 48 [2021-07-09 17:41:55,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:41:55,307 INFO L482 AbstractCegarLoop]: Abstraction has 4491 states and 12498 transitions. [2021-07-09 17:41:55,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:55,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 12498 transitions. [2021-07-09 17:41:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:41:55,320 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:41:55,320 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:41:55,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 17:41:55,321 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:41:55,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:41:55,321 INFO L82 PathProgramCache]: Analyzing trace with hash 118964854, now seen corresponding path program 3 times [2021-07-09 17:41:55,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:41:55,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188090970] [2021-07-09 17:41:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:41:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:41:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:41:55,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:41:55,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188090970] [2021-07-09 17:41:55,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188090970] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:41:55,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:41:55,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:41:55,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245036917] [2021-07-09 17:41:55,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:41:55,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:41:55,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:41:55,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:41:55,403 INFO L87 Difference]: Start difference. First operand 4491 states and 12498 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:55,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:41:55,475 INFO L93 Difference]: Finished difference Result 4420 states and 12077 transitions. [2021-07-09 17:41:55,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:41:55,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:41:55,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:41:55,497 INFO L225 Difference]: With dead ends: 4420 [2021-07-09 17:41:55,499 INFO L226 Difference]: Without dead ends: 4420 [2021-07-09 17:41:55,500 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:41:55,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2021-07-09 17:41:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 4412. [2021-07-09 17:41:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4411 states have (on average 2.7343006121060984) internal successors, (12061), 4411 states have internal predecessors, (12061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 12061 transitions. [2021-07-09 17:41:55,659 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 12061 transitions. Word has length 48 [2021-07-09 17:41:55,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:41:55,660 INFO L482 AbstractCegarLoop]: Abstraction has 4412 states and 12061 transitions. [2021-07-09 17:41:55,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 12061 transitions. [2021-07-09 17:41:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:41:55,670 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:41:55,671 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:41:55,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 17:41:55,671 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:41:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:41:55,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1163388610, now seen corresponding path program 4 times [2021-07-09 17:41:55,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:41:55,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732736443] [2021-07-09 17:41:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:41:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:41:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:41:55,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:41:55,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732736443] [2021-07-09 17:41:55,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732736443] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:41:55,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:41:55,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:41:55,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938992383] [2021-07-09 17:41:55,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:41:55,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:41:55,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:41:55,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:41:55,804 INFO L87 Difference]: Start difference. First operand 4412 states and 12061 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:41:56,012 INFO L93 Difference]: Finished difference Result 5574 states and 14822 transitions. [2021-07-09 17:41:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 17:41:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:41:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:41:56,046 INFO L225 Difference]: With dead ends: 5574 [2021-07-09 17:41:56,046 INFO L226 Difference]: Without dead ends: 5402 [2021-07-09 17:41:56,047 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 150.7ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:41:56,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2021-07-09 17:41:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 4452. [2021-07-09 17:41:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 4451 states have (on average 2.725454953942934) internal successors, (12131), 4451 states have internal predecessors, (12131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:56,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 12131 transitions. [2021-07-09 17:41:56,224 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 12131 transitions. Word has length 48 [2021-07-09 17:41:56,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:41:56,225 INFO L482 AbstractCegarLoop]: Abstraction has 4452 states and 12131 transitions. [2021-07-09 17:41:56,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:56,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 12131 transitions. [2021-07-09 17:41:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:41:56,235 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:41:56,236 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:41:56,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 17:41:56,236 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:41:56,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:41:56,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1386527906, now seen corresponding path program 5 times [2021-07-09 17:41:56,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:41:56,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302740456] [2021-07-09 17:41:56,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:41:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:41:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:41:56,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:41:56,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302740456] [2021-07-09 17:41:56,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302740456] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:41:56,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:41:56,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:41:56,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110989080] [2021-07-09 17:41:56,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:41:56,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:41:56,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:41:56,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:41:56,417 INFO L87 Difference]: Start difference. First operand 4452 states and 12131 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:56,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:41:56,687 INFO L93 Difference]: Finished difference Result 6096 states and 16402 transitions. [2021-07-09 17:41:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:41:56,687 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:41:56,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:41:56,722 INFO L225 Difference]: With dead ends: 6096 [2021-07-09 17:41:56,722 INFO L226 Difference]: Without dead ends: 5893 [2021-07-09 17:41:56,723 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:41:56,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2021-07-09 17:41:56,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 4512. [2021-07-09 17:41:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 4511 states have (on average 2.7264464641986255) internal successors, (12299), 4511 states have internal predecessors, (12299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 12299 transitions. [2021-07-09 17:41:56,862 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 12299 transitions. Word has length 48 [2021-07-09 17:41:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:41:56,862 INFO L482 AbstractCegarLoop]: Abstraction has 4512 states and 12299 transitions. [2021-07-09 17:41:56,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:56,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 12299 transitions. [2021-07-09 17:41:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:41:56,873 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:41:56,873 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:41:56,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 17:41:56,873 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:41:56,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:41:56,874 INFO L82 PathProgramCache]: Analyzing trace with hash -203399878, now seen corresponding path program 6 times [2021-07-09 17:41:56,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:41:56,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877553417] [2021-07-09 17:41:56,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:41:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:41:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:41:57,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:41:57,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877553417] [2021-07-09 17:41:57,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877553417] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:41:57,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:41:57,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-09 17:41:57,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632191125] [2021-07-09 17:41:57,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-09 17:41:57,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:41:57,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-09 17:41:57,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-07-09 17:41:57,038 INFO L87 Difference]: Start difference. First operand 4512 states and 12299 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:41:57,474 INFO L93 Difference]: Finished difference Result 8150 states and 22105 transitions. [2021-07-09 17:41:57,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-09 17:41:57,475 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:41:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:41:57,495 INFO L225 Difference]: With dead ends: 8150 [2021-07-09 17:41:57,495 INFO L226 Difference]: Without dead ends: 8120 [2021-07-09 17:41:57,496 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 147.0ms TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-07-09 17:41:57,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8120 states. [2021-07-09 17:41:57,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8120 to 4620. [2021-07-09 17:41:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4620 states, 4619 states have (on average 2.719852781987443) internal successors, (12563), 4619 states have internal predecessors, (12563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 12563 transitions. [2021-07-09 17:41:57,666 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 12563 transitions. Word has length 48 [2021-07-09 17:41:57,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:41:57,667 INFO L482 AbstractCegarLoop]: Abstraction has 4620 states and 12563 transitions. [2021-07-09 17:41:57,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 12563 transitions. [2021-07-09 17:41:57,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:41:57,676 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:41:57,677 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:41:57,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 17:41:57,677 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:41:57,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:41:57,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1290396456, now seen corresponding path program 7 times [2021-07-09 17:41:57,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:41:57,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543820667] [2021-07-09 17:41:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:41:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:41:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:41:57,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:41:57,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543820667] [2021-07-09 17:41:57,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543820667] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:41:57,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:41:57,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-09 17:41:57,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879370171] [2021-07-09 17:41:57,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-09 17:41:57,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:41:57,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-09 17:41:57,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-07-09 17:41:57,822 INFO L87 Difference]: Start difference. First operand 4620 states and 12563 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:41:58,252 INFO L93 Difference]: Finished difference Result 8099 states and 21975 transitions. [2021-07-09 17:41:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:41:58,253 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:41:58,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:41:58,275 INFO L225 Difference]: With dead ends: 8099 [2021-07-09 17:41:58,275 INFO L226 Difference]: Without dead ends: 7967 [2021-07-09 17:41:58,276 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 144.4ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:41:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7967 states. [2021-07-09 17:41:58,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7967 to 4512. [2021-07-09 17:41:58,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 4511 states have (on average 2.725781423187763) internal successors, (12296), 4511 states have internal predecessors, (12296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:58,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 12296 transitions. [2021-07-09 17:41:58,440 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 12296 transitions. Word has length 48 [2021-07-09 17:41:58,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:41:58,440 INFO L482 AbstractCegarLoop]: Abstraction has 4512 states and 12296 transitions. [2021-07-09 17:41:58,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:58,441 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 12296 transitions. [2021-07-09 17:41:58,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:41:58,450 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:41:58,450 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:41:58,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 17:41:58,450 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:41:58,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:41:58,451 INFO L82 PathProgramCache]: Analyzing trace with hash 128464646, now seen corresponding path program 8 times [2021-07-09 17:41:58,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:41:58,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515658547] [2021-07-09 17:41:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:41:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:41:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:41:58,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:41:58,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515658547] [2021-07-09 17:41:58,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515658547] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:41:58,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:41:58,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:41:58,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317357296] [2021-07-09 17:41:58,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:41:58,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:41:58,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:41:58,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:41:58,603 INFO L87 Difference]: Start difference. First operand 4512 states and 12296 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:58,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:41:58,911 INFO L93 Difference]: Finished difference Result 6424 states and 17186 transitions. [2021-07-09 17:41:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:41:58,920 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:41:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:41:58,936 INFO L225 Difference]: With dead ends: 6424 [2021-07-09 17:41:58,937 INFO L226 Difference]: Without dead ends: 6221 [2021-07-09 17:41:58,937 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 76.6ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:41:58,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2021-07-09 17:41:59,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 4580. [2021-07-09 17:41:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4579 states have (on average 2.721336536361651) internal successors, (12461), 4579 states have internal predecessors, (12461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:59,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 12461 transitions. [2021-07-09 17:41:59,090 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 12461 transitions. Word has length 48 [2021-07-09 17:41:59,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:41:59,090 INFO L482 AbstractCegarLoop]: Abstraction has 4580 states and 12461 transitions. [2021-07-09 17:41:59,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:59,090 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 12461 transitions. [2021-07-09 17:41:59,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:41:59,104 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:41:59,104 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:41:59,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 17:41:59,104 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:41:59,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:41:59,105 INFO L82 PathProgramCache]: Analyzing trace with hash -984017146, now seen corresponding path program 9 times [2021-07-09 17:41:59,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:41:59,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289640648] [2021-07-09 17:41:59,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:41:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:41:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:41:59,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:41:59,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289640648] [2021-07-09 17:41:59,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289640648] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:41:59,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:41:59,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:41:59,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534127955] [2021-07-09 17:41:59,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:41:59,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:41:59,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:41:59,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:41:59,269 INFO L87 Difference]: Start difference. First operand 4580 states and 12461 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:41:59,513 INFO L93 Difference]: Finished difference Result 6388 states and 17086 transitions. [2021-07-09 17:41:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:41:59,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:41:59,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:41:59,527 INFO L225 Difference]: With dead ends: 6388 [2021-07-09 17:41:59,527 INFO L226 Difference]: Without dead ends: 6275 [2021-07-09 17:41:59,528 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:41:59,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6275 states. [2021-07-09 17:41:59,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6275 to 4609. [2021-07-09 17:41:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4609 states, 4608 states have (on average 2.7196180555555554) internal successors, (12532), 4608 states have internal predecessors, (12532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 12532 transitions. [2021-07-09 17:41:59,688 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 12532 transitions. Word has length 48 [2021-07-09 17:41:59,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:41:59,688 INFO L482 AbstractCegarLoop]: Abstraction has 4609 states and 12532 transitions. [2021-07-09 17:41:59,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:41:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 12532 transitions. [2021-07-09 17:41:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:41:59,696 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:41:59,696 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:41:59,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 17:41:59,697 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:41:59,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:41:59,698 INFO L82 PathProgramCache]: Analyzing trace with hash -444341150, now seen corresponding path program 10 times [2021-07-09 17:41:59,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:41:59,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846944351] [2021-07-09 17:41:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:41:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:41:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:41:59,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:41:59,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846944351] [2021-07-09 17:41:59,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846944351] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:41:59,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:41:59,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 17:41:59,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593128749] [2021-07-09 17:41:59,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 17:41:59,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:41:59,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 17:41:59,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:41:59,906 INFO L87 Difference]: Start difference. First operand 4609 states and 12532 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:00,345 INFO L93 Difference]: Finished difference Result 9112 states and 24329 transitions. [2021-07-09 17:42:00,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 17:42:00,345 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:00,362 INFO L225 Difference]: With dead ends: 9112 [2021-07-09 17:42:00,362 INFO L226 Difference]: Without dead ends: 8944 [2021-07-09 17:42:00,363 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 231.3ms TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:42:00,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8944 states. [2021-07-09 17:42:00,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8944 to 5338. [2021-07-09 17:42:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 2.7120104927862094) internal successors, (14474), 5337 states have internal predecessors, (14474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:00,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 14474 transitions. [2021-07-09 17:42:00,578 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 14474 transitions. Word has length 48 [2021-07-09 17:42:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:00,578 INFO L482 AbstractCegarLoop]: Abstraction has 5338 states and 14474 transitions. [2021-07-09 17:42:00,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 14474 transitions. [2021-07-09 17:42:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:00,592 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:00,592 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:00,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 17:42:00,592 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:00,593 INFO L82 PathProgramCache]: Analyzing trace with hash -802485304, now seen corresponding path program 11 times [2021-07-09 17:42:00,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:00,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679063877] [2021-07-09 17:42:00,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:00,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:00,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679063877] [2021-07-09 17:42:00,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679063877] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:00,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:00,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-09 17:42:00,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977419533] [2021-07-09 17:42:00,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-09 17:42:00,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:00,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-09 17:42:00,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-07-09 17:42:00,759 INFO L87 Difference]: Start difference. First operand 5338 states and 14474 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:01,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:01,191 INFO L93 Difference]: Finished difference Result 8305 states and 22315 transitions. [2021-07-09 17:42:01,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-09 17:42:01,201 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:01,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:01,215 INFO L225 Difference]: With dead ends: 8305 [2021-07-09 17:42:01,215 INFO L226 Difference]: Without dead ends: 7791 [2021-07-09 17:42:01,215 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 203.2ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:42:01,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7791 states. [2021-07-09 17:42:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7791 to 5534. [2021-07-09 17:42:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5534 states, 5533 states have (on average 2.713717693836978) internal successors, (15015), 5533 states have internal predecessors, (15015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:01,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5534 states to 5534 states and 15015 transitions. [2021-07-09 17:42:01,413 INFO L78 Accepts]: Start accepts. Automaton has 5534 states and 15015 transitions. Word has length 48 [2021-07-09 17:42:01,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:01,414 INFO L482 AbstractCegarLoop]: Abstraction has 5534 states and 15015 transitions. [2021-07-09 17:42:01,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 5534 states and 15015 transitions. [2021-07-09 17:42:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:01,425 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:01,425 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:01,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-09 17:42:01,425 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:01,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:01,425 INFO L82 PathProgramCache]: Analyzing trace with hash -152206882, now seen corresponding path program 12 times [2021-07-09 17:42:01,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:01,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449667887] [2021-07-09 17:42:01,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:01,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:01,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449667887] [2021-07-09 17:42:01,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449667887] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:01,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:01,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:42:01,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980950554] [2021-07-09 17:42:01,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:42:01,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:01,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:42:01,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:42:01,486 INFO L87 Difference]: Start difference. First operand 5534 states and 15015 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:01,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:01,636 INFO L93 Difference]: Finished difference Result 8872 states and 24172 transitions. [2021-07-09 17:42:01,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:42:01,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:01,651 INFO L225 Difference]: With dead ends: 8872 [2021-07-09 17:42:01,651 INFO L226 Difference]: Without dead ends: 8407 [2021-07-09 17:42:01,652 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8407 states. [2021-07-09 17:42:01,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8407 to 5936. [2021-07-09 17:42:01,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5935 states have (on average 2.709351305812974) internal successors, (16080), 5935 states have internal predecessors, (16080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 16080 transitions. [2021-07-09 17:42:01,837 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 16080 transitions. Word has length 48 [2021-07-09 17:42:01,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:01,838 INFO L482 AbstractCegarLoop]: Abstraction has 5936 states and 16080 transitions. [2021-07-09 17:42:01,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:01,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 16080 transitions. [2021-07-09 17:42:01,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:01,848 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:01,848 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:01,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-09 17:42:01,849 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:01,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:01,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1282071802, now seen corresponding path program 13 times [2021-07-09 17:42:01,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:01,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598397901] [2021-07-09 17:42:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:01,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:01,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598397901] [2021-07-09 17:42:01,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598397901] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:01,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:01,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:01,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451594975] [2021-07-09 17:42:01,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:01,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:01,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:01,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:01,953 INFO L87 Difference]: Start difference. First operand 5936 states and 16080 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:02,316 INFO L93 Difference]: Finished difference Result 13281 states and 36061 transitions. [2021-07-09 17:42:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:42:02,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:02,342 INFO L225 Difference]: With dead ends: 13281 [2021-07-09 17:42:02,342 INFO L226 Difference]: Without dead ends: 13241 [2021-07-09 17:42:02,342 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 111.6ms TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-07-09 17:42:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13241 states. [2021-07-09 17:42:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13241 to 6444. [2021-07-09 17:42:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6444 states, 6443 states have (on average 2.7200062082880647) internal successors, (17525), 6443 states have internal predecessors, (17525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6444 states to 6444 states and 17525 transitions. [2021-07-09 17:42:02,618 INFO L78 Accepts]: Start accepts. Automaton has 6444 states and 17525 transitions. Word has length 48 [2021-07-09 17:42:02,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:02,619 INFO L482 AbstractCegarLoop]: Abstraction has 6444 states and 17525 transitions. [2021-07-09 17:42:02,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 6444 states and 17525 transitions. [2021-07-09 17:42:02,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:02,633 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:02,633 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:02,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-09 17:42:02,634 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:02,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:02,634 INFO L82 PathProgramCache]: Analyzing trace with hash -430591226, now seen corresponding path program 14 times [2021-07-09 17:42:02,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:02,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114048090] [2021-07-09 17:42:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:02,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:02,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114048090] [2021-07-09 17:42:02,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114048090] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:02,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:02,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:42:02,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138204509] [2021-07-09 17:42:02,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:42:02,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:02,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:42:02,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:42:02,711 INFO L87 Difference]: Start difference. First operand 6444 states and 17525 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:02,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:02,869 INFO L93 Difference]: Finished difference Result 8765 states and 23506 transitions. [2021-07-09 17:42:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:42:02,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:02,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:02,884 INFO L225 Difference]: With dead ends: 8765 [2021-07-09 17:42:02,884 INFO L226 Difference]: Without dead ends: 8534 [2021-07-09 17:42:02,885 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2021-07-09 17:42:03,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 6546. [2021-07-09 17:42:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6546 states, 6545 states have (on average 2.715508021390374) internal successors, (17773), 6545 states have internal predecessors, (17773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6546 states to 6546 states and 17773 transitions. [2021-07-09 17:42:03,093 INFO L78 Accepts]: Start accepts. Automaton has 6546 states and 17773 transitions. Word has length 48 [2021-07-09 17:42:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:03,094 INFO L482 AbstractCegarLoop]: Abstraction has 6546 states and 17773 transitions. [2021-07-09 17:42:03,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 6546 states and 17773 transitions. [2021-07-09 17:42:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:03,108 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:03,108 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:03,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-09 17:42:03,108 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:03,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1900413702, now seen corresponding path program 15 times [2021-07-09 17:42:03,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:03,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367819334] [2021-07-09 17:42:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:03,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:03,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367819334] [2021-07-09 17:42:03,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367819334] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:03,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:03,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:42:03,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391039021] [2021-07-09 17:42:03,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:42:03,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:03,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:42:03,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:03,233 INFO L87 Difference]: Start difference. First operand 6546 states and 17773 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:03,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:03,543 INFO L93 Difference]: Finished difference Result 10811 states and 29363 transitions. [2021-07-09 17:42:03,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:42:03,543 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:03,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:03,558 INFO L225 Difference]: With dead ends: 10811 [2021-07-09 17:42:03,558 INFO L226 Difference]: Without dead ends: 10771 [2021-07-09 17:42:03,558 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 130.7ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-07-09 17:42:03,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2021-07-09 17:42:03,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 6298. [2021-07-09 17:42:03,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6298 states, 6297 states have (on average 2.7071621407019215) internal successors, (17047), 6297 states have internal predecessors, (17047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6298 states to 6298 states and 17047 transitions. [2021-07-09 17:42:03,744 INFO L78 Accepts]: Start accepts. Automaton has 6298 states and 17047 transitions. Word has length 48 [2021-07-09 17:42:03,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:03,745 INFO L482 AbstractCegarLoop]: Abstraction has 6298 states and 17047 transitions. [2021-07-09 17:42:03,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 6298 states and 17047 transitions. [2021-07-09 17:42:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:03,754 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:03,754 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:03,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-09 17:42:03,754 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:03,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:03,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1056686212, now seen corresponding path program 16 times [2021-07-09 17:42:03,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:03,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424438893] [2021-07-09 17:42:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:03,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:03,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:03,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424438893] [2021-07-09 17:42:03,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424438893] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:03,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:03,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 17:42:03,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445701679] [2021-07-09 17:42:03,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 17:42:03,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:03,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 17:42:03,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:42:03,913 INFO L87 Difference]: Start difference. First operand 6298 states and 17047 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:04,171 INFO L93 Difference]: Finished difference Result 10937 states and 29424 transitions. [2021-07-09 17:42:04,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 17:42:04,171 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:04,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:04,185 INFO L225 Difference]: With dead ends: 10937 [2021-07-09 17:42:04,186 INFO L226 Difference]: Without dead ends: 10677 [2021-07-09 17:42:04,186 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:42:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10677 states. [2021-07-09 17:42:04,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10677 to 6545. [2021-07-09 17:42:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6545 states, 6544 states have (on average 2.7078239608801957) internal successors, (17720), 6544 states have internal predecessors, (17720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6545 states to 6545 states and 17720 transitions. [2021-07-09 17:42:04,368 INFO L78 Accepts]: Start accepts. Automaton has 6545 states and 17720 transitions. Word has length 48 [2021-07-09 17:42:04,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:04,368 INFO L482 AbstractCegarLoop]: Abstraction has 6545 states and 17720 transitions. [2021-07-09 17:42:04,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6545 states and 17720 transitions. [2021-07-09 17:42:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:04,380 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:04,380 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:04,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-09 17:42:04,380 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:04,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:04,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1641016614, now seen corresponding path program 17 times [2021-07-09 17:42:04,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:04,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433869657] [2021-07-09 17:42:04,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:04,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:04,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433869657] [2021-07-09 17:42:04,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433869657] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:04,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:04,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:42:04,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254740377] [2021-07-09 17:42:04,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:42:04,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:04,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:42:04,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:42:04,392 INFO L87 Difference]: Start difference. First operand 6545 states and 17720 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:04,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:04,414 INFO L93 Difference]: Finished difference Result 6078 states and 16069 transitions. [2021-07-09 17:42:04,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:42:04,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:04,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:04,422 INFO L225 Difference]: With dead ends: 6078 [2021-07-09 17:42:04,422 INFO L226 Difference]: Without dead ends: 6005 [2021-07-09 17:42:04,422 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:42:04,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6005 states. [2021-07-09 17:42:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6005 to 6005. [2021-07-09 17:42:04,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6005 states, 6004 states have (on average 2.6497335109926716) internal successors, (15909), 6004 states have internal predecessors, (15909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 15909 transitions. [2021-07-09 17:42:04,528 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 15909 transitions. Word has length 48 [2021-07-09 17:42:04,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:04,528 INFO L482 AbstractCegarLoop]: Abstraction has 6005 states and 15909 transitions. [2021-07-09 17:42:04,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 15909 transitions. [2021-07-09 17:42:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:04,537 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:04,537 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:04,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-09 17:42:04,537 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:04,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:04,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1699023128, now seen corresponding path program 18 times [2021-07-09 17:42:04,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:04,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797801879] [2021-07-09 17:42:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:04,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:04,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797801879] [2021-07-09 17:42:04,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797801879] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:04,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:04,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:42:04,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479469547] [2021-07-09 17:42:04,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:42:04,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:04,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:42:04,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:04,672 INFO L87 Difference]: Start difference. First operand 6005 states and 15909 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:04,947 INFO L93 Difference]: Finished difference Result 7121 states and 18594 transitions. [2021-07-09 17:42:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:42:04,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:04,956 INFO L225 Difference]: With dead ends: 7121 [2021-07-09 17:42:04,956 INFO L226 Difference]: Without dead ends: 6974 [2021-07-09 17:42:04,957 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 141.6ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-07-09 17:42:04,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6974 states. [2021-07-09 17:42:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6974 to 6266. [2021-07-09 17:42:05,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6266 states, 6265 states have (on average 2.6333599361532323) internal successors, (16498), 6265 states have internal predecessors, (16498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:05,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6266 states to 6266 states and 16498 transitions. [2021-07-09 17:42:05,075 INFO L78 Accepts]: Start accepts. Automaton has 6266 states and 16498 transitions. Word has length 48 [2021-07-09 17:42:05,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:05,075 INFO L482 AbstractCegarLoop]: Abstraction has 6266 states and 16498 transitions. [2021-07-09 17:42:05,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:05,075 INFO L276 IsEmpty]: Start isEmpty. Operand 6266 states and 16498 transitions. [2021-07-09 17:42:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:05,085 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:05,085 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:05,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-09 17:42:05,085 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:05,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:05,086 INFO L82 PathProgramCache]: Analyzing trace with hash -201136230, now seen corresponding path program 19 times [2021-07-09 17:42:05,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:05,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378735097] [2021-07-09 17:42:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:05,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:05,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378735097] [2021-07-09 17:42:05,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378735097] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:05,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:05,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:42:05,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018872165] [2021-07-09 17:42:05,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:42:05,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:05,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:42:05,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:05,199 INFO L87 Difference]: Start difference. First operand 6266 states and 16498 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:05,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:05,454 INFO L93 Difference]: Finished difference Result 7158 states and 18653 transitions. [2021-07-09 17:42:05,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 17:42:05,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:05,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:05,464 INFO L225 Difference]: With dead ends: 7158 [2021-07-09 17:42:05,464 INFO L226 Difference]: Without dead ends: 7033 [2021-07-09 17:42:05,465 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 144.6ms TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-07-09 17:42:05,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2021-07-09 17:42:05,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 6235. [2021-07-09 17:42:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6235 states, 6234 states have (on average 2.6315367340391402) internal successors, (16405), 6234 states have internal predecessors, (16405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6235 states to 6235 states and 16405 transitions. [2021-07-09 17:42:05,586 INFO L78 Accepts]: Start accepts. Automaton has 6235 states and 16405 transitions. Word has length 48 [2021-07-09 17:42:05,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:05,586 INFO L482 AbstractCegarLoop]: Abstraction has 6235 states and 16405 transitions. [2021-07-09 17:42:05,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6235 states and 16405 transitions. [2021-07-09 17:42:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:05,594 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:05,595 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:05,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-09 17:42:05,595 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:05,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:05,595 INFO L82 PathProgramCache]: Analyzing trace with hash 588737442, now seen corresponding path program 20 times [2021-07-09 17:42:05,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:05,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183027758] [2021-07-09 17:42:05,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:05,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:05,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183027758] [2021-07-09 17:42:05,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183027758] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:05,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:05,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:05,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651862412] [2021-07-09 17:42:05,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:05,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:05,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:05,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:05,676 INFO L87 Difference]: Start difference. First operand 6235 states and 16405 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:05,944 INFO L93 Difference]: Finished difference Result 9940 states and 25923 transitions. [2021-07-09 17:42:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 17:42:05,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:05,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:05,958 INFO L225 Difference]: With dead ends: 9940 [2021-07-09 17:42:05,958 INFO L226 Difference]: Without dead ends: 9835 [2021-07-09 17:42:05,958 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2021-07-09 17:42:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9835 states. [2021-07-09 17:42:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9835 to 6223. [2021-07-09 17:42:06,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6223 states, 6222 states have (on average 2.631468981035037) internal successors, (16373), 6222 states have internal predecessors, (16373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 16373 transitions. [2021-07-09 17:42:06,126 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 16373 transitions. Word has length 48 [2021-07-09 17:42:06,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:06,127 INFO L482 AbstractCegarLoop]: Abstraction has 6223 states and 16373 transitions. [2021-07-09 17:42:06,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:06,127 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 16373 transitions. [2021-07-09 17:42:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:06,135 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:06,135 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:06,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-09 17:42:06,135 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:06,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:06,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1128413438, now seen corresponding path program 21 times [2021-07-09 17:42:06,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:06,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073265305] [2021-07-09 17:42:06,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:06,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:06,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:06,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073265305] [2021-07-09 17:42:06,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073265305] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:06,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:06,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:06,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973641627] [2021-07-09 17:42:06,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:06,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:06,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:06,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:06,214 INFO L87 Difference]: Start difference. First operand 6223 states and 16373 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:06,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:06,531 INFO L93 Difference]: Finished difference Result 9861 states and 25623 transitions. [2021-07-09 17:42:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:42:06,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:06,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:06,549 INFO L225 Difference]: With dead ends: 9861 [2021-07-09 17:42:06,549 INFO L226 Difference]: Without dead ends: 9631 [2021-07-09 17:42:06,550 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:42:06,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9631 states. [2021-07-09 17:42:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9631 to 5746. [2021-07-09 17:42:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5746 states, 5745 states have (on average 2.6222802436901653) internal successors, (15065), 5745 states have internal predecessors, (15065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5746 states to 5746 states and 15065 transitions. [2021-07-09 17:42:06,738 INFO L78 Accepts]: Start accepts. Automaton has 5746 states and 15065 transitions. Word has length 48 [2021-07-09 17:42:06,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:06,738 INFO L482 AbstractCegarLoop]: Abstraction has 5746 states and 15065 transitions. [2021-07-09 17:42:06,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:06,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5746 states and 15065 transitions. [2021-07-09 17:42:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:06,750 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:06,751 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:06,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-09 17:42:06,751 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:06,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:06,751 INFO L82 PathProgramCache]: Analyzing trace with hash -970339206, now seen corresponding path program 22 times [2021-07-09 17:42:06,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:06,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110126340] [2021-07-09 17:42:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:06,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:06,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110126340] [2021-07-09 17:42:06,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110126340] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:06,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:06,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-09 17:42:06,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261809143] [2021-07-09 17:42:06,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-09 17:42:06,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:06,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-09 17:42:06,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-07-09 17:42:06,892 INFO L87 Difference]: Start difference. First operand 5746 states and 15065 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:07,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:07,282 INFO L93 Difference]: Finished difference Result 8727 states and 22466 transitions. [2021-07-09 17:42:07,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 17:42:07,282 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:07,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:07,293 INFO L225 Difference]: With dead ends: 8727 [2021-07-09 17:42:07,294 INFO L226 Difference]: Without dead ends: 8599 [2021-07-09 17:42:07,294 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 162.5ms TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:42:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8599 states. [2021-07-09 17:42:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8599 to 5743. [2021-07-09 17:42:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5743 states, 5742 states have (on average 2.6215604319052597) internal successors, (15053), 5742 states have internal predecessors, (15053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5743 states to 5743 states and 15053 transitions. [2021-07-09 17:42:07,411 INFO L78 Accepts]: Start accepts. Automaton has 5743 states and 15053 transitions. Word has length 48 [2021-07-09 17:42:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:07,411 INFO L482 AbstractCegarLoop]: Abstraction has 5743 states and 15053 transitions. [2021-07-09 17:42:07,411 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5743 states and 15053 transitions. [2021-07-09 17:42:07,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:07,419 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:07,419 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:07,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-09 17:42:07,419 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:07,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:07,420 INFO L82 PathProgramCache]: Analyzing trace with hash -782764444, now seen corresponding path program 23 times [2021-07-09 17:42:07,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:07,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693718795] [2021-07-09 17:42:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:07,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:07,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693718795] [2021-07-09 17:42:07,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693718795] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:07,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:07,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:07,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479223002] [2021-07-09 17:42:07,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:07,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:07,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:07,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:07,481 INFO L87 Difference]: Start difference. First operand 5743 states and 15053 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:07,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:07,848 INFO L93 Difference]: Finished difference Result 12643 states and 32745 transitions. [2021-07-09 17:42:07,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-09 17:42:07,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:07,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:07,875 INFO L225 Difference]: With dead ends: 12643 [2021-07-09 17:42:07,875 INFO L226 Difference]: Without dead ends: 12505 [2021-07-09 17:42:07,875 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 147.9ms TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:42:07,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12505 states. [2021-07-09 17:42:08,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12505 to 5704. [2021-07-09 17:42:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 2.6242328598982994) internal successors, (14966), 5703 states have internal predecessors, (14966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:08,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 14966 transitions. [2021-07-09 17:42:08,088 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 14966 transitions. Word has length 48 [2021-07-09 17:42:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:08,088 INFO L482 AbstractCegarLoop]: Abstraction has 5704 states and 14966 transitions. [2021-07-09 17:42:08,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 14966 transitions. [2021-07-09 17:42:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:08,097 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:08,097 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:08,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-09 17:42:08,098 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:08,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:08,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1112659756, now seen corresponding path program 24 times [2021-07-09 17:42:08,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:08,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424220615] [2021-07-09 17:42:08,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:08,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:08,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424220615] [2021-07-09 17:42:08,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424220615] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:08,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:08,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:42:08,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646031603] [2021-07-09 17:42:08,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:42:08,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:08,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:42:08,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:42:08,146 INFO L87 Difference]: Start difference. First operand 5704 states and 14966 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:08,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:08,331 INFO L93 Difference]: Finished difference Result 6400 states and 16590 transitions. [2021-07-09 17:42:08,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 17:42:08,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:08,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:08,341 INFO L225 Difference]: With dead ends: 6400 [2021-07-09 17:42:08,341 INFO L226 Difference]: Without dead ends: 6102 [2021-07-09 17:42:08,341 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:42:08,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6102 states. [2021-07-09 17:42:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6102 to 5743. [2021-07-09 17:42:08,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5743 states, 5742 states have (on average 2.606931382793452) internal successors, (14969), 5742 states have internal predecessors, (14969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5743 states to 5743 states and 14969 transitions. [2021-07-09 17:42:08,438 INFO L78 Accepts]: Start accepts. Automaton has 5743 states and 14969 transitions. Word has length 48 [2021-07-09 17:42:08,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:08,439 INFO L482 AbstractCegarLoop]: Abstraction has 5743 states and 14969 transitions. [2021-07-09 17:42:08,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:08,439 INFO L276 IsEmpty]: Start isEmpty. Operand 5743 states and 14969 transitions. [2021-07-09 17:42:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:08,448 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:08,448 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:08,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-09 17:42:08,448 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:08,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1836625034, now seen corresponding path program 25 times [2021-07-09 17:42:08,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:08,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119649449] [2021-07-09 17:42:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:08,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:08,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119649449] [2021-07-09 17:42:08,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119649449] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:08,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:08,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 17:42:08,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380384220] [2021-07-09 17:42:08,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 17:42:08,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:08,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 17:42:08,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:42:08,562 INFO L87 Difference]: Start difference. First operand 5743 states and 14969 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:08,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:08,849 INFO L93 Difference]: Finished difference Result 7527 states and 19417 transitions. [2021-07-09 17:42:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:42:08,850 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:08,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:08,863 INFO L225 Difference]: With dead ends: 7527 [2021-07-09 17:42:08,863 INFO L226 Difference]: Without dead ends: 7323 [2021-07-09 17:42:08,864 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 137.8ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-07-09 17:42:08,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7323 states. [2021-07-09 17:42:08,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7323 to 5664. [2021-07-09 17:42:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 5663 states have (on average 2.6102772382129613) internal successors, (14782), 5663 states have internal predecessors, (14782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 14782 transitions. [2021-07-09 17:42:08,979 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 14782 transitions. Word has length 48 [2021-07-09 17:42:08,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:08,979 INFO L482 AbstractCegarLoop]: Abstraction has 5664 states and 14782 transitions. [2021-07-09 17:42:08,979 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 14782 transitions. [2021-07-09 17:42:08,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:08,987 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:08,988 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:08,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-09 17:42:08,988 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:08,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:08,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1515232300, now seen corresponding path program 26 times [2021-07-09 17:42:08,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:08,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091056064] [2021-07-09 17:42:08,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:09,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:09,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091056064] [2021-07-09 17:42:09,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091056064] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:09,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:09,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:42:09,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440264614] [2021-07-09 17:42:09,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:42:09,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:09,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:42:09,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:09,088 INFO L87 Difference]: Start difference. First operand 5664 states and 14782 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:09,356 INFO L93 Difference]: Finished difference Result 6807 states and 17527 transitions. [2021-07-09 17:42:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 17:42:09,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:09,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:09,366 INFO L225 Difference]: With dead ends: 6807 [2021-07-09 17:42:09,366 INFO L226 Difference]: Without dead ends: 6488 [2021-07-09 17:42:09,366 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-07-09 17:42:09,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2021-07-09 17:42:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5803. [2021-07-09 17:42:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5803 states, 5802 states have (on average 2.6211651154774214) internal successors, (15208), 5802 states have internal predecessors, (15208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 15208 transitions. [2021-07-09 17:42:09,486 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 15208 transitions. Word has length 48 [2021-07-09 17:42:09,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:09,486 INFO L482 AbstractCegarLoop]: Abstraction has 5803 states and 15208 transitions. [2021-07-09 17:42:09,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:09,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 15208 transitions. [2021-07-09 17:42:09,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:09,493 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:09,493 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:09,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-09 17:42:09,493 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:09,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:09,494 INFO L82 PathProgramCache]: Analyzing trace with hash 954277634, now seen corresponding path program 27 times [2021-07-09 17:42:09,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:09,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442332187] [2021-07-09 17:42:09,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:09,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:09,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442332187] [2021-07-09 17:42:09,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442332187] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:09,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:09,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:42:09,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037709533] [2021-07-09 17:42:09,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:42:09,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:09,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:42:09,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:42:09,510 INFO L87 Difference]: Start difference. First operand 5803 states and 15208 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:09,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:09,530 INFO L93 Difference]: Finished difference Result 5451 states and 13870 transitions. [2021-07-09 17:42:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:42:09,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:09,540 INFO L225 Difference]: With dead ends: 5451 [2021-07-09 17:42:09,540 INFO L226 Difference]: Without dead ends: 5451 [2021-07-09 17:42:09,540 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:42:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2021-07-09 17:42:09,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 5445. [2021-07-09 17:42:09,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5445 states, 5444 states have (on average 2.5453710506980163) internal successors, (13857), 5444 states have internal predecessors, (13857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:09,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5445 states to 5445 states and 13857 transitions. [2021-07-09 17:42:09,637 INFO L78 Accepts]: Start accepts. Automaton has 5445 states and 13857 transitions. Word has length 48 [2021-07-09 17:42:09,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:09,638 INFO L482 AbstractCegarLoop]: Abstraction has 5445 states and 13857 transitions. [2021-07-09 17:42:09,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:09,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5445 states and 13857 transitions. [2021-07-09 17:42:09,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:09,645 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:09,645 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:09,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-09 17:42:09,645 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:09,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:09,645 INFO L82 PathProgramCache]: Analyzing trace with hash -225849054, now seen corresponding path program 28 times [2021-07-09 17:42:09,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:09,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364282190] [2021-07-09 17:42:09,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:09,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:09,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:09,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364282190] [2021-07-09 17:42:09,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364282190] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:09,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:09,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:09,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963172462] [2021-07-09 17:42:09,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:09,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:09,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:09,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:09,707 INFO L87 Difference]: Start difference. First operand 5445 states and 13857 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:09,871 INFO L93 Difference]: Finished difference Result 6331 states and 15911 transitions. [2021-07-09 17:42:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 17:42:09,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:09,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:09,882 INFO L225 Difference]: With dead ends: 6331 [2021-07-09 17:42:09,882 INFO L226 Difference]: Without dead ends: 5944 [2021-07-09 17:42:09,883 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 116.0ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:42:09,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2021-07-09 17:42:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5364. [2021-07-09 17:42:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5364 states, 5363 states have (on average 2.533842998321835) internal successors, (13589), 5363 states have internal predecessors, (13589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5364 states to 5364 states and 13589 transitions. [2021-07-09 17:42:10,005 INFO L78 Accepts]: Start accepts. Automaton has 5364 states and 13589 transitions. Word has length 48 [2021-07-09 17:42:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:10,005 INFO L482 AbstractCegarLoop]: Abstraction has 5364 states and 13589 transitions. [2021-07-09 17:42:10,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 5364 states and 13589 transitions. [2021-07-09 17:42:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:10,013 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:10,013 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:10,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-09 17:42:10,013 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:10,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:10,014 INFO L82 PathProgramCache]: Analyzing trace with hash 434899342, now seen corresponding path program 29 times [2021-07-09 17:42:10,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:10,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722616809] [2021-07-09 17:42:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:10,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:10,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722616809] [2021-07-09 17:42:10,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722616809] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:10,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:10,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:42:10,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506097860] [2021-07-09 17:42:10,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:42:10,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:10,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:42:10,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:10,130 INFO L87 Difference]: Start difference. First operand 5364 states and 13589 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:10,395 INFO L93 Difference]: Finished difference Result 8051 states and 20260 transitions. [2021-07-09 17:42:10,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:42:10,395 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:10,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:10,405 INFO L225 Difference]: With dead ends: 8051 [2021-07-09 17:42:10,406 INFO L226 Difference]: Without dead ends: 7893 [2021-07-09 17:42:10,406 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 131.5ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-07-09 17:42:10,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7893 states. [2021-07-09 17:42:10,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7893 to 5764. [2021-07-09 17:42:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5764 states, 5763 states have (on average 2.532188096477529) internal successors, (14593), 5763 states have internal predecessors, (14593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5764 states to 5764 states and 14593 transitions. [2021-07-09 17:42:10,545 INFO L78 Accepts]: Start accepts. Automaton has 5764 states and 14593 transitions. Word has length 48 [2021-07-09 17:42:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:10,545 INFO L482 AbstractCegarLoop]: Abstraction has 5764 states and 14593 transitions. [2021-07-09 17:42:10,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5764 states and 14593 transitions. [2021-07-09 17:42:10,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:10,551 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:10,551 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:10,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-09 17:42:10,552 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:10,552 INFO L82 PathProgramCache]: Analyzing trace with hash 888719650, now seen corresponding path program 30 times [2021-07-09 17:42:10,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:10,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157214277] [2021-07-09 17:42:10,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:10,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:10,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:10,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157214277] [2021-07-09 17:42:10,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157214277] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:10,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:10,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:10,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642903425] [2021-07-09 17:42:10,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:10,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:10,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:10,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:10,634 INFO L87 Difference]: Start difference. First operand 5764 states and 14593 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:10,921 INFO L93 Difference]: Finished difference Result 9080 states and 22731 transitions. [2021-07-09 17:42:10,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 17:42:10,922 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:10,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:10,934 INFO L225 Difference]: With dead ends: 9080 [2021-07-09 17:42:10,934 INFO L226 Difference]: Without dead ends: 9014 [2021-07-09 17:42:10,934 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2021-07-09 17:42:10,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9014 states. [2021-07-09 17:42:11,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9014 to 6019. [2021-07-09 17:42:11,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6019 states, 6018 states have (on average 2.5111332668660684) internal successors, (15112), 6018 states have internal predecessors, (15112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6019 states to 6019 states and 15112 transitions. [2021-07-09 17:42:11,059 INFO L78 Accepts]: Start accepts. Automaton has 6019 states and 15112 transitions. Word has length 48 [2021-07-09 17:42:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:11,059 INFO L482 AbstractCegarLoop]: Abstraction has 6019 states and 15112 transitions. [2021-07-09 17:42:11,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 6019 states and 15112 transitions. [2021-07-09 17:42:11,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:11,066 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:11,066 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:11,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-09 17:42:11,067 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:11,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:11,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1883614816, now seen corresponding path program 31 times [2021-07-09 17:42:11,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:11,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669114421] [2021-07-09 17:42:11,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:11,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:11,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669114421] [2021-07-09 17:42:11,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669114421] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:11,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:11,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:42:11,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775963220] [2021-07-09 17:42:11,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:42:11,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:11,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:42:11,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:11,171 INFO L87 Difference]: Start difference. First operand 6019 states and 15112 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:11,496 INFO L93 Difference]: Finished difference Result 7933 states and 19517 transitions. [2021-07-09 17:42:11,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 17:42:11,496 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:11,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:11,510 INFO L225 Difference]: With dead ends: 7933 [2021-07-09 17:42:11,510 INFO L226 Difference]: Without dead ends: 7879 [2021-07-09 17:42:11,511 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 157.4ms TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2021-07-09 17:42:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7879 states. [2021-07-09 17:42:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7879 to 5623. [2021-07-09 17:42:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5623 states, 5622 states have (on average 2.498932764140875) internal successors, (14049), 5622 states have internal predecessors, (14049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5623 states to 5623 states and 14049 transitions. [2021-07-09 17:42:11,660 INFO L78 Accepts]: Start accepts. Automaton has 5623 states and 14049 transitions. Word has length 48 [2021-07-09 17:42:11,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:11,661 INFO L482 AbstractCegarLoop]: Abstraction has 5623 states and 14049 transitions. [2021-07-09 17:42:11,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:11,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5623 states and 14049 transitions. [2021-07-09 17:42:11,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:11,668 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:11,669 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:11,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-09 17:42:11,669 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:11,670 INFO L82 PathProgramCache]: Analyzing trace with hash -772461512, now seen corresponding path program 32 times [2021-07-09 17:42:11,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:11,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395494964] [2021-07-09 17:42:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:11,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:11,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:11,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395494964] [2021-07-09 17:42:11,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395494964] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:11,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:11,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:11,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687611707] [2021-07-09 17:42:11,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:11,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:11,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:11,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:11,777 INFO L87 Difference]: Start difference. First operand 5623 states and 14049 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:11,925 INFO L93 Difference]: Finished difference Result 5919 states and 14665 transitions. [2021-07-09 17:42:11,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:42:11,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:11,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:11,932 INFO L225 Difference]: With dead ends: 5919 [2021-07-09 17:42:11,932 INFO L226 Difference]: Without dead ends: 5624 [2021-07-09 17:42:11,932 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:42:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5624 states. [2021-07-09 17:42:12,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5624 to 4865. [2021-07-09 17:42:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4865 states, 4864 states have (on average 2.4870476973684212) internal successors, (12097), 4864 states have internal predecessors, (12097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4865 states to 4865 states and 12097 transitions. [2021-07-09 17:42:12,041 INFO L78 Accepts]: Start accepts. Automaton has 4865 states and 12097 transitions. Word has length 48 [2021-07-09 17:42:12,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:12,041 INFO L482 AbstractCegarLoop]: Abstraction has 4865 states and 12097 transitions. [2021-07-09 17:42:12,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:12,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4865 states and 12097 transitions. [2021-07-09 17:42:12,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:12,046 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:12,047 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:12,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-09 17:42:12,047 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:12,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:12,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2029851034, now seen corresponding path program 33 times [2021-07-09 17:42:12,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:12,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872162600] [2021-07-09 17:42:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:12,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:12,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872162600] [2021-07-09 17:42:12,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872162600] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:12,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:12,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:12,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308518374] [2021-07-09 17:42:12,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:12,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:12,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:12,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:12,103 INFO L87 Difference]: Start difference. First operand 4865 states and 12097 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:12,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:12,240 INFO L93 Difference]: Finished difference Result 5199 states and 12796 transitions. [2021-07-09 17:42:12,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 17:42:12,240 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:12,250 INFO L225 Difference]: With dead ends: 5199 [2021-07-09 17:42:12,250 INFO L226 Difference]: Without dead ends: 5105 [2021-07-09 17:42:12,252 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 102.3ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:42:12,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5105 states. [2021-07-09 17:42:12,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5105 to 4845. [2021-07-09 17:42:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4845 states, 4844 states have (on average 2.4828654004954585) internal successors, (12027), 4844 states have internal predecessors, (12027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 12027 transitions. [2021-07-09 17:42:12,358 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 12027 transitions. Word has length 48 [2021-07-09 17:42:12,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:12,358 INFO L482 AbstractCegarLoop]: Abstraction has 4845 states and 12027 transitions. [2021-07-09 17:42:12,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:12,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 12027 transitions. [2021-07-09 17:42:12,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:12,365 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:12,365 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:12,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-09 17:42:12,366 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:12,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:12,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1435746146, now seen corresponding path program 34 times [2021-07-09 17:42:12,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:12,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765864301] [2021-07-09 17:42:12,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:12,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:12,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765864301] [2021-07-09 17:42:12,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765864301] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:12,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:12,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:42:12,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344570103] [2021-07-09 17:42:12,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:42:12,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:12,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:42:12,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:42:12,429 INFO L87 Difference]: Start difference. First operand 4845 states and 12027 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:12,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:12,554 INFO L93 Difference]: Finished difference Result 5172 states and 12716 transitions. [2021-07-09 17:42:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:42:12,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:12,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:12,560 INFO L225 Difference]: With dead ends: 5172 [2021-07-09 17:42:12,560 INFO L226 Difference]: Without dead ends: 5110 [2021-07-09 17:42:12,560 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:12,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2021-07-09 17:42:12,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 4822. [2021-07-09 17:42:12,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4821 states have (on average 2.476042314872433) internal successors, (11937), 4821 states have internal predecessors, (11937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 11937 transitions. [2021-07-09 17:42:12,634 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 11937 transitions. Word has length 48 [2021-07-09 17:42:12,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:12,634 INFO L482 AbstractCegarLoop]: Abstraction has 4822 states and 11937 transitions. [2021-07-09 17:42:12,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 11937 transitions. [2021-07-09 17:42:12,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:12,639 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:12,639 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:12,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-09 17:42:12,639 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:12,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:12,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1953229120, now seen corresponding path program 35 times [2021-07-09 17:42:12,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:12,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504621141] [2021-07-09 17:42:12,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:12,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:12,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504621141] [2021-07-09 17:42:12,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504621141] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:12,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:12,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:12,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181194312] [2021-07-09 17:42:12,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:12,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:12,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:12,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:12,724 INFO L87 Difference]: Start difference. First operand 4822 states and 11937 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:12,955 INFO L93 Difference]: Finished difference Result 6350 states and 15452 transitions. [2021-07-09 17:42:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:42:12,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:12,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:12,963 INFO L225 Difference]: With dead ends: 6350 [2021-07-09 17:42:12,963 INFO L226 Difference]: Without dead ends: 6284 [2021-07-09 17:42:12,964 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:42:12,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6284 states. [2021-07-09 17:42:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6284 to 4736. [2021-07-09 17:42:13,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4736 states, 4735 states have (on average 2.4658922914466737) internal successors, (11676), 4735 states have internal predecessors, (11676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:13,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 11676 transitions. [2021-07-09 17:42:13,057 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 11676 transitions. Word has length 48 [2021-07-09 17:42:13,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:13,057 INFO L482 AbstractCegarLoop]: Abstraction has 4736 states and 11676 transitions. [2021-07-09 17:42:13,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 11676 transitions. [2021-07-09 17:42:13,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:13,062 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:13,062 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:13,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-09 17:42:13,062 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:13,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:13,063 INFO L82 PathProgramCache]: Analyzing trace with hash -958333954, now seen corresponding path program 36 times [2021-07-09 17:42:13,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:13,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151143156] [2021-07-09 17:42:13,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:13,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:13,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151143156] [2021-07-09 17:42:13,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151143156] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:13,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:13,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:42:13,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283839280] [2021-07-09 17:42:13,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:42:13,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:13,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:42:13,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:13,144 INFO L87 Difference]: Start difference. First operand 4736 states and 11676 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:13,425 INFO L93 Difference]: Finished difference Result 5924 states and 14189 transitions. [2021-07-09 17:42:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-09 17:42:13,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:13,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:13,433 INFO L225 Difference]: With dead ends: 5924 [2021-07-09 17:42:13,433 INFO L226 Difference]: Without dead ends: 5768 [2021-07-09 17:42:13,436 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:42:13,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5768 states. [2021-07-09 17:42:13,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5768 to 3548. [2021-07-09 17:42:13,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 3547 states have (on average 2.434451649281083) internal successors, (8635), 3547 states have internal predecessors, (8635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 8635 transitions. [2021-07-09 17:42:13,506 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 8635 transitions. Word has length 48 [2021-07-09 17:42:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:13,506 INFO L482 AbstractCegarLoop]: Abstraction has 3548 states and 8635 transitions. [2021-07-09 17:42:13,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 8635 transitions. [2021-07-09 17:42:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:13,510 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:13,510 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:13,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-09 17:42:13,510 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:13,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:13,510 INFO L82 PathProgramCache]: Analyzing trace with hash -684595368, now seen corresponding path program 37 times [2021-07-09 17:42:13,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:13,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420914596] [2021-07-09 17:42:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:13,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:13,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420914596] [2021-07-09 17:42:13,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420914596] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:13,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:13,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:13,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500307446] [2021-07-09 17:42:13,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:13,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:13,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:13,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:13,592 INFO L87 Difference]: Start difference. First operand 3548 states and 8635 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:13,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:13,740 INFO L93 Difference]: Finished difference Result 3939 states and 9569 transitions. [2021-07-09 17:42:13,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 17:42:13,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:13,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:13,744 INFO L225 Difference]: With dead ends: 3939 [2021-07-09 17:42:13,744 INFO L226 Difference]: Without dead ends: 3790 [2021-07-09 17:42:13,744 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:42:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2021-07-09 17:42:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3471. [2021-07-09 17:42:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3471 states, 3470 states have (on average 2.440057636887608) internal successors, (8467), 3470 states have internal predecessors, (8467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:13,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3471 states to 3471 states and 8467 transitions. [2021-07-09 17:42:13,796 INFO L78 Accepts]: Start accepts. Automaton has 3471 states and 8467 transitions. Word has length 48 [2021-07-09 17:42:13,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:13,796 INFO L482 AbstractCegarLoop]: Abstraction has 3471 states and 8467 transitions. [2021-07-09 17:42:13,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:13,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3471 states and 8467 transitions. [2021-07-09 17:42:13,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:13,799 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:13,799 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:13,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-09 17:42:13,800 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:13,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:13,800 INFO L82 PathProgramCache]: Analyzing trace with hash -754552418, now seen corresponding path program 38 times [2021-07-09 17:42:13,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:13,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637706056] [2021-07-09 17:42:13,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:13,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:13,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637706056] [2021-07-09 17:42:13,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637706056] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:13,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:13,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 17:42:13,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516123150] [2021-07-09 17:42:13,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 17:42:13,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:13,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 17:42:13,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:42:13,922 INFO L87 Difference]: Start difference. First operand 3471 states and 8467 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:14,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:14,246 INFO L93 Difference]: Finished difference Result 4930 states and 11873 transitions. [2021-07-09 17:42:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-09 17:42:14,247 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:14,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:14,253 INFO L225 Difference]: With dead ends: 4930 [2021-07-09 17:42:14,253 INFO L226 Difference]: Without dead ends: 4812 [2021-07-09 17:42:14,253 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 133.1ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:42:14,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4812 states. [2021-07-09 17:42:14,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4812 to 3466. [2021-07-09 17:42:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3465 states have (on average 2.44011544011544) internal successors, (8455), 3465 states have internal predecessors, (8455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:14,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 8455 transitions. [2021-07-09 17:42:14,312 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 8455 transitions. Word has length 48 [2021-07-09 17:42:14,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:14,312 INFO L482 AbstractCegarLoop]: Abstraction has 3466 states and 8455 transitions. [2021-07-09 17:42:14,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 8455 transitions. [2021-07-09 17:42:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:14,315 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:14,315 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:14,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-09 17:42:14,315 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:14,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:14,315 INFO L82 PathProgramCache]: Analyzing trace with hash -602477630, now seen corresponding path program 39 times [2021-07-09 17:42:14,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:14,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230082395] [2021-07-09 17:42:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:14,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:14,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230082395] [2021-07-09 17:42:14,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230082395] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:14,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:14,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 17:42:14,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897718993] [2021-07-09 17:42:14,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 17:42:14,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:14,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 17:42:14,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-07-09 17:42:14,435 INFO L87 Difference]: Start difference. First operand 3466 states and 8455 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:14,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:14,747 INFO L93 Difference]: Finished difference Result 4791 states and 11561 transitions. [2021-07-09 17:42:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-09 17:42:14,747 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:14,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:14,754 INFO L225 Difference]: With dead ends: 4791 [2021-07-09 17:42:14,754 INFO L226 Difference]: Without dead ends: 4653 [2021-07-09 17:42:14,754 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:42:14,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2021-07-09 17:42:14,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 3307. [2021-07-09 17:42:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 3306 states have (on average 2.450393224440411) internal successors, (8101), 3306 states have internal predecessors, (8101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 8101 transitions. [2021-07-09 17:42:14,856 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 8101 transitions. Word has length 48 [2021-07-09 17:42:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:14,857 INFO L482 AbstractCegarLoop]: Abstraction has 3307 states and 8101 transitions. [2021-07-09 17:42:14,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 8101 transitions. [2021-07-09 17:42:14,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:14,861 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:14,861 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:14,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-09 17:42:14,861 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:14,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:14,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1269546636, now seen corresponding path program 40 times [2021-07-09 17:42:14,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:14,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414672569] [2021-07-09 17:42:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:14,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:14,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:14,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414672569] [2021-07-09 17:42:14,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414672569] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:14,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:14,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:14,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369311085] [2021-07-09 17:42:14,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:14,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:14,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:14,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:14,920 INFO L87 Difference]: Start difference. First operand 3307 states and 8101 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:15,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:15,059 INFO L93 Difference]: Finished difference Result 3710 states and 8986 transitions. [2021-07-09 17:42:15,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 17:42:15,060 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:15,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:15,065 INFO L225 Difference]: With dead ends: 3710 [2021-07-09 17:42:15,066 INFO L226 Difference]: Without dead ends: 3415 [2021-07-09 17:42:15,066 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:42:15,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2021-07-09 17:42:15,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 3164. [2021-07-09 17:42:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3164 states, 3163 states have (on average 2.43629465697123) internal successors, (7706), 3163 states have internal predecessors, (7706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:15,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 7706 transitions. [2021-07-09 17:42:15,132 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 7706 transitions. Word has length 48 [2021-07-09 17:42:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:15,132 INFO L482 AbstractCegarLoop]: Abstraction has 3164 states and 7706 transitions. [2021-07-09 17:42:15,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 7706 transitions. [2021-07-09 17:42:15,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:15,137 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:15,137 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:15,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-09 17:42:15,137 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:15,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:15,137 INFO L82 PathProgramCache]: Analyzing trace with hash -729504526, now seen corresponding path program 41 times [2021-07-09 17:42:15,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:15,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836643170] [2021-07-09 17:42:15,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:15,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:15,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836643170] [2021-07-09 17:42:15,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836643170] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:15,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:15,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:42:15,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344279803] [2021-07-09 17:42:15,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:42:15,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:15,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:42:15,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:15,242 INFO L87 Difference]: Start difference. First operand 3164 states and 7706 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:15,429 INFO L93 Difference]: Finished difference Result 4602 states and 11100 transitions. [2021-07-09 17:42:15,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 17:42:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:15,435 INFO L225 Difference]: With dead ends: 4602 [2021-07-09 17:42:15,435 INFO L226 Difference]: Without dead ends: 4299 [2021-07-09 17:42:15,435 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:42:15,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2021-07-09 17:42:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 3522. [2021-07-09 17:42:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3522 states, 3521 states have (on average 2.41209883555808) internal successors, (8493), 3521 states have internal predecessors, (8493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 8493 transitions. [2021-07-09 17:42:15,497 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 8493 transitions. Word has length 48 [2021-07-09 17:42:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:15,497 INFO L482 AbstractCegarLoop]: Abstraction has 3522 states and 8493 transitions. [2021-07-09 17:42:15,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:15,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 8493 transitions. [2021-07-09 17:42:15,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:15,500 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:15,500 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:15,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-09 17:42:15,500 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:15,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:15,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1279309328, now seen corresponding path program 42 times [2021-07-09 17:42:15,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:15,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531751139] [2021-07-09 17:42:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:15,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:15,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531751139] [2021-07-09 17:42:15,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531751139] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:15,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:15,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:42:15,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840840262] [2021-07-09 17:42:15,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:42:15,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:15,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:42:15,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:15,599 INFO L87 Difference]: Start difference. First operand 3522 states and 8493 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:15,770 INFO L93 Difference]: Finished difference Result 4000 states and 9565 transitions. [2021-07-09 17:42:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 17:42:15,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:15,778 INFO L225 Difference]: With dead ends: 4000 [2021-07-09 17:42:15,778 INFO L226 Difference]: Without dead ends: 3667 [2021-07-09 17:42:15,778 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 121.6ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:42:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2021-07-09 17:42:15,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3185. [2021-07-09 17:42:15,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 3184 states have (on average 2.405464824120603) internal successors, (7659), 3184 states have internal predecessors, (7659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 7659 transitions. [2021-07-09 17:42:15,834 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 7659 transitions. Word has length 48 [2021-07-09 17:42:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:15,835 INFO L482 AbstractCegarLoop]: Abstraction has 3185 states and 7659 transitions. [2021-07-09 17:42:15,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:15,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 7659 transitions. [2021-07-09 17:42:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:15,838 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:15,838 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:15,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-09 17:42:15,838 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:15,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:15,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1417277836, now seen corresponding path program 43 times [2021-07-09 17:42:15,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:15,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552783979] [2021-07-09 17:42:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:15,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:15,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552783979] [2021-07-09 17:42:15,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552783979] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:15,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:15,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:15,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94214213] [2021-07-09 17:42:15,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:15,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:15,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:15,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:15,894 INFO L87 Difference]: Start difference. First operand 3185 states and 7659 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:16,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:16,015 INFO L93 Difference]: Finished difference Result 3433 states and 8176 transitions. [2021-07-09 17:42:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 17:42:16,016 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:16,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:16,019 INFO L225 Difference]: With dead ends: 3433 [2021-07-09 17:42:16,020 INFO L226 Difference]: Without dead ends: 2919 [2021-07-09 17:42:16,020 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 99.9ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-09 17:42:16,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2021-07-09 17:42:16,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2594. [2021-07-09 17:42:16,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2594 states, 2593 states have (on average 2.3848823756266873) internal successors, (6184), 2593 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 6184 transitions. [2021-07-09 17:42:16,063 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 6184 transitions. Word has length 48 [2021-07-09 17:42:16,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:16,063 INFO L482 AbstractCegarLoop]: Abstraction has 2594 states and 6184 transitions. [2021-07-09 17:42:16,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 6184 transitions. [2021-07-09 17:42:16,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:16,066 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:16,066 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:16,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-09 17:42:16,066 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:16,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:16,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1548197130, now seen corresponding path program 44 times [2021-07-09 17:42:16,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:16,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145359161] [2021-07-09 17:42:16,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:16,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:16,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145359161] [2021-07-09 17:42:16,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145359161] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:16,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:16,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:42:16,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273888958] [2021-07-09 17:42:16,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:42:16,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:16,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:42:16,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:16,173 INFO L87 Difference]: Start difference. First operand 2594 states and 6184 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:16,364 INFO L93 Difference]: Finished difference Result 3030 states and 7148 transitions. [2021-07-09 17:42:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 17:42:16,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:16,369 INFO L225 Difference]: With dead ends: 3030 [2021-07-09 17:42:16,369 INFO L226 Difference]: Without dead ends: 2807 [2021-07-09 17:42:16,369 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:42:16,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2021-07-09 17:42:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2528. [2021-07-09 17:42:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2527 states have (on average 2.3616937079540956) internal successors, (5968), 2527 states have internal predecessors, (5968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 5968 transitions. [2021-07-09 17:42:16,434 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 5968 transitions. Word has length 48 [2021-07-09 17:42:16,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:16,434 INFO L482 AbstractCegarLoop]: Abstraction has 2528 states and 5968 transitions. [2021-07-09 17:42:16,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:16,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 5968 transitions. [2021-07-09 17:42:16,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:16,436 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:16,436 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:16,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-09 17:42:16,436 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:16,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:16,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1674060612, now seen corresponding path program 45 times [2021-07-09 17:42:16,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:16,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070523152] [2021-07-09 17:42:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:16,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:16,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070523152] [2021-07-09 17:42:16,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070523152] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:16,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:16,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:42:16,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427821866] [2021-07-09 17:42:16,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:42:16,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:16,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:42:16,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:42:16,503 INFO L87 Difference]: Start difference. First operand 2528 states and 5968 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:16,623 INFO L93 Difference]: Finished difference Result 2858 states and 6700 transitions. [2021-07-09 17:42:16,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 17:42:16,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:16,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:16,626 INFO L225 Difference]: With dead ends: 2858 [2021-07-09 17:42:16,627 INFO L226 Difference]: Without dead ends: 2825 [2021-07-09 17:42:16,627 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 44.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:42:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2021-07-09 17:42:16,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2504. [2021-07-09 17:42:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 2503 states have (on average 2.3607670795045945) internal successors, (5909), 2503 states have internal predecessors, (5909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 5909 transitions. [2021-07-09 17:42:16,660 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 5909 transitions. Word has length 48 [2021-07-09 17:42:16,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:16,660 INFO L482 AbstractCegarLoop]: Abstraction has 2504 states and 5909 transitions. [2021-07-09 17:42:16,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:16,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 5909 transitions. [2021-07-09 17:42:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:16,662 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:16,662 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:16,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-09 17:42:16,662 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:16,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:16,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2098001932, now seen corresponding path program 46 times [2021-07-09 17:42:16,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:16,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124024716] [2021-07-09 17:42:16,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:16,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:16,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124024716] [2021-07-09 17:42:16,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124024716] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:16,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:16,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:42:16,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722917073] [2021-07-09 17:42:16,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:42:16,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:16,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:42:16,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:16,765 INFO L87 Difference]: Start difference. First operand 2504 states and 5909 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:16,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:16,908 INFO L93 Difference]: Finished difference Result 2667 states and 6235 transitions. [2021-07-09 17:42:16,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 17:42:16,908 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:16,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:16,910 INFO L225 Difference]: With dead ends: 2667 [2021-07-09 17:42:16,910 INFO L226 Difference]: Without dead ends: 1870 [2021-07-09 17:42:16,911 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:42:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2021-07-09 17:42:16,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1786. [2021-07-09 17:42:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1785 states have (on average 2.315966386554622) internal successors, (4134), 1785 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 4134 transitions. [2021-07-09 17:42:16,932 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 4134 transitions. Word has length 48 [2021-07-09 17:42:16,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:16,932 INFO L482 AbstractCegarLoop]: Abstraction has 1786 states and 4134 transitions. [2021-07-09 17:42:16,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:16,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 4134 transitions. [2021-07-09 17:42:16,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:16,934 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:16,934 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:16,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-09 17:42:16,934 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:16,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:16,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1787987210, now seen corresponding path program 47 times [2021-07-09 17:42:16,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:16,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366806505] [2021-07-09 17:42:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:16,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:16,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366806505] [2021-07-09 17:42:16,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366806505] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:16,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:16,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:42:16,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384022032] [2021-07-09 17:42:16,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:42:16,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:16,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:42:16,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:42:16,992 INFO L87 Difference]: Start difference. First operand 1786 states and 4134 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:17,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:17,108 INFO L93 Difference]: Finished difference Result 1844 states and 4248 transitions. [2021-07-09 17:42:17,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 17:42:17,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:17,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:17,111 INFO L225 Difference]: With dead ends: 1844 [2021-07-09 17:42:17,111 INFO L226 Difference]: Without dead ends: 1744 [2021-07-09 17:42:17,111 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:42:17,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2021-07-09 17:42:17,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1744. [2021-07-09 17:42:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1743 states have (on average 2.3121055651176134) internal successors, (4030), 1743 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 4030 transitions. [2021-07-09 17:42:17,138 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 4030 transitions. Word has length 48 [2021-07-09 17:42:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:17,138 INFO L482 AbstractCegarLoop]: Abstraction has 1744 states and 4030 transitions. [2021-07-09 17:42:17,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 4030 transitions. [2021-07-09 17:42:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:17,140 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:17,140 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:17,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-09 17:42:17,141 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:17,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:17,141 INFO L82 PathProgramCache]: Analyzing trace with hash 668037194, now seen corresponding path program 48 times [2021-07-09 17:42:17,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:17,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897247863] [2021-07-09 17:42:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:17,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:17,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897247863] [2021-07-09 17:42:17,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897247863] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:17,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:17,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:42:17,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022595333] [2021-07-09 17:42:17,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 17:42:17,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:17,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 17:42:17,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:42:17,200 INFO L87 Difference]: Start difference. First operand 1744 states and 4030 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:17,298 INFO L93 Difference]: Finished difference Result 1840 states and 4234 transitions. [2021-07-09 17:42:17,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:42:17,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:17,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:17,301 INFO L225 Difference]: With dead ends: 1840 [2021-07-09 17:42:17,301 INFO L226 Difference]: Without dead ends: 1729 [2021-07-09 17:42:17,301 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:42:17,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-07-09 17:42:17,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1609. [2021-07-09 17:42:17,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1608 states have (on average 2.2972636815920398) internal successors, (3694), 1608 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 3694 transitions. [2021-07-09 17:42:17,326 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 3694 transitions. Word has length 48 [2021-07-09 17:42:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:17,327 INFO L482 AbstractCegarLoop]: Abstraction has 1609 states and 3694 transitions. [2021-07-09 17:42:17,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:17,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 3694 transitions. [2021-07-09 17:42:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:17,328 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:17,328 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:17,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-09 17:42:17,329 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:17,329 INFO L82 PathProgramCache]: Analyzing trace with hash -641387982, now seen corresponding path program 49 times [2021-07-09 17:42:17,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:17,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231858599] [2021-07-09 17:42:17,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:17,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:17,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231858599] [2021-07-09 17:42:17,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231858599] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:17,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:17,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 17:42:17,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176447851] [2021-07-09 17:42:17,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 17:42:17,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:17,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 17:42:17,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:42:17,384 INFO L87 Difference]: Start difference. First operand 1609 states and 3694 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:17,500 INFO L93 Difference]: Finished difference Result 1615 states and 3635 transitions. [2021-07-09 17:42:17,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 17:42:17,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:17,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:17,502 INFO L225 Difference]: With dead ends: 1615 [2021-07-09 17:42:17,503 INFO L226 Difference]: Without dead ends: 1329 [2021-07-09 17:42:17,503 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:17,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-07-09 17:42:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1329. [2021-07-09 17:42:17,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 1328 states have (on average 2.2454819277108435) internal successors, (2982), 1328 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 2982 transitions. [2021-07-09 17:42:17,522 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 2982 transitions. Word has length 48 [2021-07-09 17:42:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:17,522 INFO L482 AbstractCegarLoop]: Abstraction has 1329 states and 2982 transitions. [2021-07-09 17:42:17,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 2982 transitions. [2021-07-09 17:42:17,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:17,524 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:17,524 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:17,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-09 17:42:17,524 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:17,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:17,524 INFO L82 PathProgramCache]: Analyzing trace with hash 534813022, now seen corresponding path program 50 times [2021-07-09 17:42:17,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:17,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409121514] [2021-07-09 17:42:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:17,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:17,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409121514] [2021-07-09 17:42:17,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409121514] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:17,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:17,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 17:42:17,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906921648] [2021-07-09 17:42:17,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 17:42:17,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:17,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 17:42:17,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-07-09 17:42:17,609 INFO L87 Difference]: Start difference. First operand 1329 states and 2982 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:17,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:17,808 INFO L93 Difference]: Finished difference Result 1101 states and 2424 transitions. [2021-07-09 17:42:17,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 17:42:17,808 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:17,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:17,809 INFO L225 Difference]: With dead ends: 1101 [2021-07-09 17:42:17,809 INFO L226 Difference]: Without dead ends: 529 [2021-07-09 17:42:17,809 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-07-09 17:42:17,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-07-09 17:42:17,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 336. [2021-07-09 17:42:17,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 2.1074626865671644) internal successors, (706), 335 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:17,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 706 transitions. [2021-07-09 17:42:17,813 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 706 transitions. Word has length 48 [2021-07-09 17:42:17,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:17,813 INFO L482 AbstractCegarLoop]: Abstraction has 336 states and 706 transitions. [2021-07-09 17:42:17,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:17,813 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 706 transitions. [2021-07-09 17:42:17,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 17:42:17,813 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:17,813 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:17,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-07-09 17:42:17,813 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:17,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:17,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1680723400, now seen corresponding path program 51 times [2021-07-09 17:42:17,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:17,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713268731] [2021-07-09 17:42:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:17,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:17,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713268731] [2021-07-09 17:42:17,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713268731] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:17,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:17,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 17:42:17,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154075149] [2021-07-09 17:42:17,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 17:42:17,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:17,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 17:42:17,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-07-09 17:42:17,888 INFO L87 Difference]: Start difference. First operand 336 states and 706 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:18,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:18,005 INFO L93 Difference]: Finished difference Result 284 states and 592 transitions. [2021-07-09 17:42:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 17:42:18,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 17:42:18,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:18,006 INFO L225 Difference]: With dead ends: 284 [2021-07-09 17:42:18,006 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 17:42:18,006 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-07-09 17:42:18,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 17:42:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 17:42:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:18,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 17:42:18,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-07-09 17:42:18,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:18,007 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 17:42:18,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:42:18,007 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 17:42:18,007 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 17:42:18,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-07-09 17:42:18,009 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 17:42:18,011 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 05:42:18 BasicIcfg [2021-07-09 17:42:18,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 17:42:18,012 INFO L168 Benchmark]: Toolchain (without parser) took 26203.86 ms. Allocated memory was 170.9 MB in the beginning and 846.2 MB in the end (delta: 675.3 MB). Free memory was 151.3 MB in the beginning and 315.9 MB in the end (delta: -164.6 MB). Peak memory consumption was 510.9 MB. Max. memory is 8.0 GB. [2021-07-09 17:42:18,012 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 170.9 MB. Free memory is still 152.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 17:42:18,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.75 ms. Allocated memory is still 170.9 MB. Free memory was 151.3 MB in the beginning and 149.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 17:42:18,012 INFO L168 Benchmark]: Boogie Preprocessor took 14.85 ms. Allocated memory is still 170.9 MB. Free memory was 149.8 MB in the beginning and 148.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 17:42:18,012 INFO L168 Benchmark]: RCFGBuilder took 334.26 ms. Allocated memory is still 170.9 MB. Free memory was 148.7 MB in the beginning and 135.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-09 17:42:18,012 INFO L168 Benchmark]: TraceAbstraction took 25819.83 ms. Allocated memory was 170.9 MB in the beginning and 846.2 MB in the end (delta: 675.3 MB). Free memory was 134.5 MB in the beginning and 315.9 MB in the end (delta: -181.4 MB). Peak memory consumption was 494.1 MB. Max. memory is 8.0 GB. [2021-07-09 17:42:18,012 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 0.10 ms. Allocated memory is still 170.9 MB. Free memory is still 152.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 29.75 ms. Allocated memory is still 170.9 MB. Free memory was 151.3 MB in the beginning and 149.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.85 ms. Allocated memory is still 170.9 MB. Free memory was 149.8 MB in the beginning and 148.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 334.26 ms. Allocated memory is still 170.9 MB. Free memory was 148.7 MB in the beginning and 135.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25819.83 ms. Allocated memory was 170.9 MB in the beginning and 846.2 MB in the end (delta: 675.3 MB). Free memory was 134.5 MB in the beginning and 315.9 MB in the end (delta: -181.4 MB). Peak memory consumption was 494.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 99 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25667.8ms, OverallIterations: 51, TraceHistogramMax: 1, EmptinessCheckTime: 402.2ms, AutomataDifference: 13176.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 158.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5433 SDtfs, 9853 SDslu, 20511 SDs, 0 SdLazy, 13096 SolverSat, 2428 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6494.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 687 GetRequests, 84 SyntacticMatches, 33 SemanticMatches, 570 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 5932.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6546occurred in iteration=14, InterpolantAutomatonStates: 572, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6119.9ms AutomataMinimizationTime, 51 MinimizatonAttempts, 81834 StatesRemovedByMinimization, 47 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 62.4ms SsaConstructionTime, 382.0ms SatisfiabilityAnalysisTime, 5034.6ms InterpolantComputationTime, 2448 NumberOfCodeBlocks, 2448 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 2397 ConstructedInterpolants, 0 QuantifiedInterpolants, 15561 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...