/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-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 19:45:48,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 19:45:48,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 19:45:48,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 19:45:48,166 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 [2021-07-13 19:45:48,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 19:45:48,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 19:45:48,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 19:45:48,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 19:45:48,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 19:45:48,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 19:45:48,187 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 19:45:48,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 19:45:48,187 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 19:45:48,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 19:45:48,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 19:45:48,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 19:45:48,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 19:45:48,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 19:45:48,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 19:45:48,188 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 19:45:48,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 19:45:48,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 19:45:48,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 19:45:48,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 19:45:48,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 19:45:48,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 19:45:48,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 19:45:48,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 19:45:48,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 19:45:48,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 19:45:48,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 19:45:48,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 19:45:48,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 19:45:48,190 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 19:45:48,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 19:45:48,190 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 19:45:48,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 19:45:48,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 19:45:48,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 19:45:48,479 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 19:45:48,480 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 19:45:48,481 INFO L432 ainManager$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 [2021-07-13 19:45:48,481 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-07-13 19:45:48,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 19:45:48,509 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 19:45:48,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 19:45:48,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 19:45:48,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 19:45:48,523 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 13.07 07:45:48" (1/1) ... [2021-07-13 19:45:48,531 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 13.07 07:45:48" (1/1) ... [2021-07-13 19:45:48,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 19:45:48,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 19:45:48,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 19:45:48,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 19:45:48,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:45:48" (1/1) ... [2021-07-13 19:45:48,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:45:48" (1/1) ... [2021-07-13 19:45:48,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:45:48" (1/1) ... [2021-07-13 19:45:48,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:45:48" (1/1) ... [2021-07-13 19:45:48,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:45:48" (1/1) ... [2021-07-13 19:45:48,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:45:48" (1/1) ... [2021-07-13 19:45:48,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:45:48" (1/1) ... [2021-07-13 19:45:48,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 19:45:48,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 19:45:48,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 19:45:48,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 19:45:48,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:45:48" (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 [2021-07-13 19:45:48,627 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 19:45:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 19:45:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 19:45:48,627 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 19:45:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 19:45:48,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 19:45:48,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 19:45:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 19:45:48,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 19:45:48,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-13 19:45:48,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-13 19:45:48,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-13 19:45:48,629 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 19:45:48,845 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 19:45:48,846 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-13 19:45:48,847 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:45:48 BoogieIcfgContainer [2021-07-13 19:45:48,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 19:45:48,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 19:45:48,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 19:45:48,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 19:45:48,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:45:48" (1/2) ... [2021-07-13 19:45:48,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444434fc and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:45:48, skipping insertion in model container [2021-07-13 19:45:48,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:45:48" (2/2) ... [2021-07-13 19:45:48,854 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-07-13 19:45:48,858 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 19:45:48,859 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 19:45:48,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 19:45:48,859 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 19:45:48,896 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-13 19:45:48,915 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-13 19:45:48,931 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 19:45:48,932 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 19:45:48,932 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 19:45:48,932 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 19:45:48,932 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 19:45:48,932 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 19:45:48,932 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 19:45:48,932 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 19:45:48,943 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 53 transitions, 130 flow [2021-07-13 19:45:49,140 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) [2021-07-13 19:45:49,154 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) [2021-07-13 19:45:49,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:49,188 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:49,189 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] [2021-07-13 19:45:49,189 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:49,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1320582874, now seen corresponding path program 1 times [2021-07-13 19:45:49,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:49,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142563121] [2021-07-13 19:45:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:49,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:49,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142563121] [2021-07-13 19:45:49,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142563121] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:49,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:49,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:45:49,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244483328] [2021-07-13 19:45:49,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:45:49,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:49,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:45:49,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:45:49,561 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) [2021-07-13 19:45:49,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:49,909 INFO L93 Difference]: Finished difference Result 4259 states and 11383 transitions. [2021-07-13 19:45:49,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 19:45:49,911 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 [2021-07-13 19:45:49,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:49,948 INFO L225 Difference]: With dead ends: 4259 [2021-07-13 19:45:49,949 INFO L226 Difference]: Without dead ends: 4067 [2021-07-13 19:45:49,952 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 202.6ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:45:50,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2021-07-13 19:45:50,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 3212. [2021-07-13 19:45:50,179 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) [2021-07-13 19:45:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 8898 transitions. [2021-07-13 19:45:50,198 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 8898 transitions. Word has length 48 [2021-07-13 19:45:50,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:50,199 INFO L482 AbstractCegarLoop]: Abstraction has 3212 states and 8898 transitions. [2021-07-13 19:45:50,199 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) [2021-07-13 19:45:50,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 8898 transitions. [2021-07-13 19:45:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:50,210 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:50,210 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] [2021-07-13 19:45:50,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 19:45:50,211 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:50,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:50,215 INFO L82 PathProgramCache]: Analyzing trace with hash 853793398, now seen corresponding path program 2 times [2021-07-13 19:45:50,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:50,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916089458] [2021-07-13 19:45:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:50,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:50,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916089458] [2021-07-13 19:45:50,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916089458] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:50,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:50,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 19:45:50,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390972981] [2021-07-13 19:45:50,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 19:45:50,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:50,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 19:45:50,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:45:50,807 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) [2021-07-13 19:45:51,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:51,701 INFO L93 Difference]: Finished difference Result 7391 states and 20690 transitions. [2021-07-13 19:45:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-13 19:45:51,702 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 [2021-07-13 19:45:51,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:51,739 INFO L225 Difference]: With dead ends: 7391 [2021-07-13 19:45:51,739 INFO L226 Difference]: Without dead ends: 6898 [2021-07-13 19:45:51,740 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 545.3ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:45:51,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6898 states. [2021-07-13 19:45:51,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6898 to 4491. [2021-07-13 19:45:51,933 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) [2021-07-13 19:45:51,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 12498 transitions. [2021-07-13 19:45:51,952 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 12498 transitions. Word has length 48 [2021-07-13 19:45:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:51,952 INFO L482 AbstractCegarLoop]: Abstraction has 4491 states and 12498 transitions. [2021-07-13 19:45:51,953 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) [2021-07-13 19:45:51,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 12498 transitions. [2021-07-13 19:45:51,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:51,964 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:51,964 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] [2021-07-13 19:45:51,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 19:45:51,964 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:51,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:51,965 INFO L82 PathProgramCache]: Analyzing trace with hash 118964854, now seen corresponding path program 3 times [2021-07-13 19:45:51,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:51,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384276978] [2021-07-13 19:45:51,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:51,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:51,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:51,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384276978] [2021-07-13 19:45:51,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384276978] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:51,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:51,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:45:51,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644162436] [2021-07-13 19:45:51,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:45:51,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:51,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:45:51,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:45:51,990 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) [2021-07-13 19:45:52,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:52,024 INFO L93 Difference]: Finished difference Result 4420 states and 12077 transitions. [2021-07-13 19:45:52,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:45:52,025 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 [2021-07-13 19:45:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:52,047 INFO L225 Difference]: With dead ends: 4420 [2021-07-13 19:45:52,049 INFO L226 Difference]: Without dead ends: 4420 [2021-07-13 19:45:52,050 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:45:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2021-07-13 19:45:52,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 4412. [2021-07-13 19:45:52,192 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) [2021-07-13 19:45:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 12061 transitions. [2021-07-13 19:45:52,209 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 12061 transitions. Word has length 48 [2021-07-13 19:45:52,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:52,209 INFO L482 AbstractCegarLoop]: Abstraction has 4412 states and 12061 transitions. [2021-07-13 19:45:52,210 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) [2021-07-13 19:45:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 12061 transitions. [2021-07-13 19:45:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:52,220 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:52,220 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] [2021-07-13 19:45:52,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 19:45:52,220 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:52,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1163388610, now seen corresponding path program 4 times [2021-07-13 19:45:52,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:52,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772195232] [2021-07-13 19:45:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:52,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:52,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772195232] [2021-07-13 19:45:52,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772195232] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:52,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:52,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:45:52,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975350076] [2021-07-13 19:45:52,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:45:52,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:52,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:45:52,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:45:52,358 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) [2021-07-13 19:45:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:52,551 INFO L93 Difference]: Finished difference Result 5574 states and 14822 transitions. [2021-07-13 19:45:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 19:45:52,552 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 [2021-07-13 19:45:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:52,572 INFO L225 Difference]: With dead ends: 5574 [2021-07-13 19:45:52,572 INFO L226 Difference]: Without dead ends: 5402 [2021-07-13 19:45:52,572 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 150.9ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:45:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2021-07-13 19:45:52,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 4452. [2021-07-13 19:45:52,702 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) [2021-07-13 19:45:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 12131 transitions. [2021-07-13 19:45:52,713 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 12131 transitions. Word has length 48 [2021-07-13 19:45:52,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:52,713 INFO L482 AbstractCegarLoop]: Abstraction has 4452 states and 12131 transitions. [2021-07-13 19:45:52,714 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) [2021-07-13 19:45:52,714 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 12131 transitions. [2021-07-13 19:45:52,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:52,723 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:52,723 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] [2021-07-13 19:45:52,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 19:45:52,724 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:52,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:52,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1386527906, now seen corresponding path program 5 times [2021-07-13 19:45:52,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:52,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566838935] [2021-07-13 19:45:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:52,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:52,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566838935] [2021-07-13 19:45:52,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566838935] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:52,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:52,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:45:52,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299154106] [2021-07-13 19:45:52,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:45:52,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:52,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:45:52,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:45:52,895 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) [2021-07-13 19:45:53,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:53,172 INFO L93 Difference]: Finished difference Result 6096 states and 16402 transitions. [2021-07-13 19:45:53,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:45:53,173 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 [2021-07-13 19:45:53,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:53,190 INFO L225 Difference]: With dead ends: 6096 [2021-07-13 19:45:53,190 INFO L226 Difference]: Without dead ends: 5893 [2021-07-13 19:45:53,190 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 129.0ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:45:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2021-07-13 19:45:53,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 4512. [2021-07-13 19:45:53,344 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) [2021-07-13 19:45:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 12299 transitions. [2021-07-13 19:45:53,357 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 12299 transitions. Word has length 48 [2021-07-13 19:45:53,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:53,357 INFO L482 AbstractCegarLoop]: Abstraction has 4512 states and 12299 transitions. [2021-07-13 19:45:53,357 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) [2021-07-13 19:45:53,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 12299 transitions. [2021-07-13 19:45:53,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:53,369 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:53,369 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] [2021-07-13 19:45:53,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 19:45:53,369 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:53,370 INFO L82 PathProgramCache]: Analyzing trace with hash -203399878, now seen corresponding path program 6 times [2021-07-13 19:45:53,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:53,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471920281] [2021-07-13 19:45:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:53,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:53,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471920281] [2021-07-13 19:45:53,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471920281] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:53,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:53,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-13 19:45:53,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999694358] [2021-07-13 19:45:53,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-13 19:45:53,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:53,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-13 19:45:53,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-07-13 19:45:53,554 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) [2021-07-13 19:45:54,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:54,020 INFO L93 Difference]: Finished difference Result 8150 states and 22105 transitions. [2021-07-13 19:45:54,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-13 19:45:54,020 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 [2021-07-13 19:45:54,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:54,052 INFO L225 Difference]: With dead ends: 8150 [2021-07-13 19:45:54,053 INFO L226 Difference]: Without dead ends: 8120 [2021-07-13 19:45:54,053 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 158.1ms TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-07-13 19:45:54,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8120 states. [2021-07-13 19:45:54,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8120 to 4620. [2021-07-13 19:45:54,202 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) [2021-07-13 19:45:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 12563 transitions. [2021-07-13 19:45:54,214 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 12563 transitions. Word has length 48 [2021-07-13 19:45:54,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:54,215 INFO L482 AbstractCegarLoop]: Abstraction has 4620 states and 12563 transitions. [2021-07-13 19:45:54,215 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) [2021-07-13 19:45:54,215 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 12563 transitions. [2021-07-13 19:45:54,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:54,229 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:54,230 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] [2021-07-13 19:45:54,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 19:45:54,230 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:54,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:54,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1290396456, now seen corresponding path program 7 times [2021-07-13 19:45:54,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:54,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198444062] [2021-07-13 19:45:54,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:54,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:54,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198444062] [2021-07-13 19:45:54,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198444062] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:54,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:54,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-13 19:45:54,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637866147] [2021-07-13 19:45:54,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-13 19:45:54,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:54,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-13 19:45:54,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-07-13 19:45:54,390 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) [2021-07-13 19:45:54,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:54,842 INFO L93 Difference]: Finished difference Result 8099 states and 21975 transitions. [2021-07-13 19:45:54,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:45:54,842 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 [2021-07-13 19:45:54,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:54,865 INFO L225 Difference]: With dead ends: 8099 [2021-07-13 19:45:54,866 INFO L226 Difference]: Without dead ends: 7967 [2021-07-13 19:45:54,866 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 160.8ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:45:54,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7967 states. [2021-07-13 19:45:55,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7967 to 4512. [2021-07-13 19:45:55,014 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) [2021-07-13 19:45:55,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 12296 transitions. [2021-07-13 19:45:55,024 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 12296 transitions. Word has length 48 [2021-07-13 19:45:55,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:55,025 INFO L482 AbstractCegarLoop]: Abstraction has 4512 states and 12296 transitions. [2021-07-13 19:45:55,025 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) [2021-07-13 19:45:55,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 12296 transitions. [2021-07-13 19:45:55,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:55,033 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:55,033 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] [2021-07-13 19:45:55,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 19:45:55,033 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:55,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:55,033 INFO L82 PathProgramCache]: Analyzing trace with hash 128464646, now seen corresponding path program 8 times [2021-07-13 19:45:55,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:55,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415646452] [2021-07-13 19:45:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:55,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:55,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415646452] [2021-07-13 19:45:55,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415646452] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:55,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:55,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:45:55,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897960746] [2021-07-13 19:45:55,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:45:55,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:55,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:45:55,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:45:55,146 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) [2021-07-13 19:45:55,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:55,429 INFO L93 Difference]: Finished difference Result 6424 states and 17186 transitions. [2021-07-13 19:45:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 19:45:55,429 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 [2021-07-13 19:45:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:55,444 INFO L225 Difference]: With dead ends: 6424 [2021-07-13 19:45:55,444 INFO L226 Difference]: Without dead ends: 6221 [2021-07-13 19:45:55,445 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 69.5ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:45:55,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2021-07-13 19:45:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 4580. [2021-07-13 19:45:55,575 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) [2021-07-13 19:45:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 12461 transitions. [2021-07-13 19:45:55,585 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 12461 transitions. Word has length 48 [2021-07-13 19:45:55,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:55,588 INFO L482 AbstractCegarLoop]: Abstraction has 4580 states and 12461 transitions. [2021-07-13 19:45:55,589 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) [2021-07-13 19:45:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 12461 transitions. [2021-07-13 19:45:55,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:55,597 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:55,597 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] [2021-07-13 19:45:55,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 19:45:55,598 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:55,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:55,598 INFO L82 PathProgramCache]: Analyzing trace with hash -984017146, now seen corresponding path program 9 times [2021-07-13 19:45:55,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:55,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402077621] [2021-07-13 19:45:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:55,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:55,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402077621] [2021-07-13 19:45:55,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402077621] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:55,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:55,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:45:55,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852429417] [2021-07-13 19:45:55,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:45:55,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:55,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:45:55,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:45:55,768 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) [2021-07-13 19:45:56,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:56,007 INFO L93 Difference]: Finished difference Result 6388 states and 17086 transitions. [2021-07-13 19:45:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:45:56,008 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 [2021-07-13 19:45:56,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:56,020 INFO L225 Difference]: With dead ends: 6388 [2021-07-13 19:45:56,020 INFO L226 Difference]: Without dead ends: 6275 [2021-07-13 19:45:56,020 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.8ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:45:56,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6275 states. [2021-07-13 19:45:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6275 to 4609. [2021-07-13 19:45:56,146 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) [2021-07-13 19:45:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 12532 transitions. [2021-07-13 19:45:56,157 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 12532 transitions. Word has length 48 [2021-07-13 19:45:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:56,157 INFO L482 AbstractCegarLoop]: Abstraction has 4609 states and 12532 transitions. [2021-07-13 19:45:56,157 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) [2021-07-13 19:45:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 12532 transitions. [2021-07-13 19:45:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:56,166 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:56,166 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] [2021-07-13 19:45:56,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 19:45:56,166 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:56,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:56,167 INFO L82 PathProgramCache]: Analyzing trace with hash -444341150, now seen corresponding path program 10 times [2021-07-13 19:45:56,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:56,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994446594] [2021-07-13 19:45:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:56,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:56,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994446594] [2021-07-13 19:45:56,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994446594] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:56,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:56,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 19:45:56,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587071104] [2021-07-13 19:45:56,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 19:45:56,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:56,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 19:45:56,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:45:56,340 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) [2021-07-13 19:45:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:56,897 INFO L93 Difference]: Finished difference Result 9112 states and 24329 transitions. [2021-07-13 19:45:56,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 19:45:56,897 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 [2021-07-13 19:45:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:56,910 INFO L225 Difference]: With dead ends: 9112 [2021-07-13 19:45:56,910 INFO L226 Difference]: Without dead ends: 8944 [2021-07-13 19:45:56,911 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 299.8ms TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:45:56,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8944 states. [2021-07-13 19:45:57,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8944 to 5338. [2021-07-13 19:45:57,096 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) [2021-07-13 19:45:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 14474 transitions. [2021-07-13 19:45:57,109 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 14474 transitions. Word has length 48 [2021-07-13 19:45:57,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:57,110 INFO L482 AbstractCegarLoop]: Abstraction has 5338 states and 14474 transitions. [2021-07-13 19:45:57,110 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) [2021-07-13 19:45:57,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 14474 transitions. [2021-07-13 19:45:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:57,120 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:57,120 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] [2021-07-13 19:45:57,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 19:45:57,120 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:57,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:57,121 INFO L82 PathProgramCache]: Analyzing trace with hash -802485304, now seen corresponding path program 11 times [2021-07-13 19:45:57,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:57,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115346408] [2021-07-13 19:45:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:57,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:57,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115346408] [2021-07-13 19:45:57,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115346408] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:57,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:57,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-13 19:45:57,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636911904] [2021-07-13 19:45:57,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-13 19:45:57,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:57,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-13 19:45:57,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-07-13 19:45:57,279 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) [2021-07-13 19:45:57,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:57,770 INFO L93 Difference]: Finished difference Result 8305 states and 22315 transitions. [2021-07-13 19:45:57,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-13 19:45:57,770 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 [2021-07-13 19:45:57,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:57,782 INFO L225 Difference]: With dead ends: 8305 [2021-07-13 19:45:57,782 INFO L226 Difference]: Without dead ends: 7791 [2021-07-13 19:45:57,783 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 218.0ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:45:57,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7791 states. [2021-07-13 19:45:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7791 to 5534. [2021-07-13 19:45:57,932 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) [2021-07-13 19:45:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5534 states to 5534 states and 15015 transitions. [2021-07-13 19:45:57,944 INFO L78 Accepts]: Start accepts. Automaton has 5534 states and 15015 transitions. Word has length 48 [2021-07-13 19:45:57,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:57,945 INFO L482 AbstractCegarLoop]: Abstraction has 5534 states and 15015 transitions. [2021-07-13 19:45:57,946 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) [2021-07-13 19:45:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 5534 states and 15015 transitions. [2021-07-13 19:45:57,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:57,956 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:57,956 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] [2021-07-13 19:45:57,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-13 19:45:57,957 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:57,957 INFO L82 PathProgramCache]: Analyzing trace with hash -152206882, now seen corresponding path program 12 times [2021-07-13 19:45:57,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:57,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871920374] [2021-07-13 19:45:57,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:58,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:58,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871920374] [2021-07-13 19:45:58,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871920374] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:58,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:58,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:45:58,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071245983] [2021-07-13 19:45:58,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 19:45:58,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:58,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 19:45:58,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:45:58,027 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) [2021-07-13 19:45:58,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:58,182 INFO L93 Difference]: Finished difference Result 8872 states and 24172 transitions. [2021-07-13 19:45:58,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 19:45:58,186 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 [2021-07-13 19:45:58,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:58,198 INFO L225 Difference]: With dead ends: 8872 [2021-07-13 19:45:58,198 INFO L226 Difference]: Without dead ends: 8407 [2021-07-13 19:45:58,198 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 59.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:45:58,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8407 states. [2021-07-13 19:45:58,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8407 to 5936. [2021-07-13 19:45:58,361 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) [2021-07-13 19:45:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 16080 transitions. [2021-07-13 19:45:58,374 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 16080 transitions. Word has length 48 [2021-07-13 19:45:58,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:58,374 INFO L482 AbstractCegarLoop]: Abstraction has 5936 states and 16080 transitions. [2021-07-13 19:45:58,375 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) [2021-07-13 19:45:58,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 16080 transitions. [2021-07-13 19:45:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:58,385 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:58,385 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] [2021-07-13 19:45:58,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-13 19:45:58,386 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:58,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:58,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1282071802, now seen corresponding path program 13 times [2021-07-13 19:45:58,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:58,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323870604] [2021-07-13 19:45:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:58,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:58,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323870604] [2021-07-13 19:45:58,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323870604] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:58,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:58,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:45:58,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802631612] [2021-07-13 19:45:58,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:45:58,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:58,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:45:58,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:45:58,472 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) [2021-07-13 19:45:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:58,849 INFO L93 Difference]: Finished difference Result 13281 states and 36061 transitions. [2021-07-13 19:45:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-13 19:45:58,850 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 [2021-07-13 19:45:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:58,872 INFO L225 Difference]: With dead ends: 13281 [2021-07-13 19:45:58,873 INFO L226 Difference]: Without dead ends: 13241 [2021-07-13 19:45:58,873 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-07-13 19:45:58,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13241 states. [2021-07-13 19:45:59,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13241 to 6444. [2021-07-13 19:45:59,100 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) [2021-07-13 19:45:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6444 states to 6444 states and 17525 transitions. [2021-07-13 19:45:59,115 INFO L78 Accepts]: Start accepts. Automaton has 6444 states and 17525 transitions. Word has length 48 [2021-07-13 19:45:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:59,115 INFO L482 AbstractCegarLoop]: Abstraction has 6444 states and 17525 transitions. [2021-07-13 19:45:59,116 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) [2021-07-13 19:45:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 6444 states and 17525 transitions. [2021-07-13 19:45:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:59,129 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:59,130 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] [2021-07-13 19:45:59,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-13 19:45:59,130 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:59,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:59,130 INFO L82 PathProgramCache]: Analyzing trace with hash -430591226, now seen corresponding path program 14 times [2021-07-13 19:45:59,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:59,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073244513] [2021-07-13 19:45:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:59,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:59,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073244513] [2021-07-13 19:45:59,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073244513] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:59,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:59,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:45:59,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884750508] [2021-07-13 19:45:59,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:45:59,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:59,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:45:59,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:45:59,219 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) [2021-07-13 19:45:59,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:45:59,400 INFO L93 Difference]: Finished difference Result 8765 states and 23506 transitions. [2021-07-13 19:45:59,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:45:59,401 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 [2021-07-13 19:45:59,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:45:59,412 INFO L225 Difference]: With dead ends: 8765 [2021-07-13 19:45:59,412 INFO L226 Difference]: Without dead ends: 8534 [2021-07-13 19:45:59,412 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:45:59,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2021-07-13 19:45:59,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 6546. [2021-07-13 19:45:59,574 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) [2021-07-13 19:45:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6546 states to 6546 states and 17773 transitions. [2021-07-13 19:45:59,634 INFO L78 Accepts]: Start accepts. Automaton has 6546 states and 17773 transitions. Word has length 48 [2021-07-13 19:45:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:45:59,634 INFO L482 AbstractCegarLoop]: Abstraction has 6546 states and 17773 transitions. [2021-07-13 19:45:59,634 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) [2021-07-13 19:45:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6546 states and 17773 transitions. [2021-07-13 19:45:59,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:45:59,648 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:45:59,648 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] [2021-07-13 19:45:59,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-13 19:45:59,648 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:45:59,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:45:59,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1900413702, now seen corresponding path program 15 times [2021-07-13 19:45:59,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:45:59,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946283894] [2021-07-13 19:45:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:45:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:45:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:45:59,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:45:59,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946283894] [2021-07-13 19:45:59,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946283894] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:45:59,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:45:59,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:45:59,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772017646] [2021-07-13 19:45:59,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:45:59,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:45:59,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:45:59,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:45:59,790 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) [2021-07-13 19:46:00,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:00,102 INFO L93 Difference]: Finished difference Result 10811 states and 29363 transitions. [2021-07-13 19:46:00,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-13 19:46:00,102 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 [2021-07-13 19:46:00,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:00,116 INFO L225 Difference]: With dead ends: 10811 [2021-07-13 19:46:00,117 INFO L226 Difference]: Without dead ends: 10771 [2021-07-13 19:46:00,117 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 137.9ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-07-13 19:46:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2021-07-13 19:46:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 6298. [2021-07-13 19:46:00,275 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) [2021-07-13 19:46:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6298 states to 6298 states and 17047 transitions. [2021-07-13 19:46:00,289 INFO L78 Accepts]: Start accepts. Automaton has 6298 states and 17047 transitions. Word has length 48 [2021-07-13 19:46:00,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:00,290 INFO L482 AbstractCegarLoop]: Abstraction has 6298 states and 17047 transitions. [2021-07-13 19:46:00,290 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) [2021-07-13 19:46:00,290 INFO L276 IsEmpty]: Start isEmpty. Operand 6298 states and 17047 transitions. [2021-07-13 19:46:00,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:00,300 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:00,300 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] [2021-07-13 19:46:00,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-13 19:46:00,301 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:00,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:00,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1056686212, now seen corresponding path program 16 times [2021-07-13 19:46:00,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:00,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49884180] [2021-07-13 19:46:00,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:00,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:00,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49884180] [2021-07-13 19:46:00,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49884180] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:00,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:00,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 19:46:00,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964232786] [2021-07-13 19:46:00,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 19:46:00,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:00,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 19:46:00,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:46:00,464 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) [2021-07-13 19:46:00,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:00,774 INFO L93 Difference]: Finished difference Result 10937 states and 29424 transitions. [2021-07-13 19:46:00,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-13 19:46:00,774 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 [2021-07-13 19:46:00,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:00,788 INFO L225 Difference]: With dead ends: 10937 [2021-07-13 19:46:00,788 INFO L226 Difference]: Without dead ends: 10677 [2021-07-13 19:46:00,789 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 156.8ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-13 19:46:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10677 states. [2021-07-13 19:46:00,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10677 to 6545. [2021-07-13 19:46:00,958 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) [2021-07-13 19:46:00,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6545 states to 6545 states and 17720 transitions. [2021-07-13 19:46:00,973 INFO L78 Accepts]: Start accepts. Automaton has 6545 states and 17720 transitions. Word has length 48 [2021-07-13 19:46:00,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:00,974 INFO L482 AbstractCegarLoop]: Abstraction has 6545 states and 17720 transitions. [2021-07-13 19:46:00,974 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) [2021-07-13 19:46:00,974 INFO L276 IsEmpty]: Start isEmpty. Operand 6545 states and 17720 transitions. [2021-07-13 19:46:00,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:00,984 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:00,984 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] [2021-07-13 19:46:00,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-13 19:46:00,984 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:00,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:00,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1641016614, now seen corresponding path program 17 times [2021-07-13 19:46:00,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:00,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155817630] [2021-07-13 19:46:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:00,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:00,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155817630] [2021-07-13 19:46:00,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155817630] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:00,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:00,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:46:00,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126977064] [2021-07-13 19:46:00,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:46:00,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:00,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:46:00,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:46:00,996 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) [2021-07-13 19:46:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:01,016 INFO L93 Difference]: Finished difference Result 6078 states and 16069 transitions. [2021-07-13 19:46:01,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:46:01,017 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 [2021-07-13 19:46:01,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:01,024 INFO L225 Difference]: With dead ends: 6078 [2021-07-13 19:46:01,025 INFO L226 Difference]: Without dead ends: 6005 [2021-07-13 19:46:01,025 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:46:01,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6005 states. [2021-07-13 19:46:01,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6005 to 6005. [2021-07-13 19:46:01,113 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) [2021-07-13 19:46:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 15909 transitions. [2021-07-13 19:46:01,122 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 15909 transitions. Word has length 48 [2021-07-13 19:46:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:01,123 INFO L482 AbstractCegarLoop]: Abstraction has 6005 states and 15909 transitions. [2021-07-13 19:46:01,123 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) [2021-07-13 19:46:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 15909 transitions. [2021-07-13 19:46:01,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:01,129 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:01,130 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] [2021-07-13 19:46:01,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-13 19:46:01,130 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:01,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:01,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1699023128, now seen corresponding path program 18 times [2021-07-13 19:46:01,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:01,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636022283] [2021-07-13 19:46:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:01,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:01,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636022283] [2021-07-13 19:46:01,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636022283] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:01,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:01,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:46:01,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123529305] [2021-07-13 19:46:01,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:46:01,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:46:01,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:46:01,235 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) [2021-07-13 19:46:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:01,523 INFO L93 Difference]: Finished difference Result 7121 states and 18594 transitions. [2021-07-13 19:46:01,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-13 19:46:01,524 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 [2021-07-13 19:46:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:01,533 INFO L225 Difference]: With dead ends: 7121 [2021-07-13 19:46:01,533 INFO L226 Difference]: Without dead ends: 6974 [2021-07-13 19:46:01,534 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-07-13 19:46:01,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6974 states. [2021-07-13 19:46:01,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6974 to 6266. [2021-07-13 19:46:01,660 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) [2021-07-13 19:46:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6266 states to 6266 states and 16498 transitions. [2021-07-13 19:46:01,673 INFO L78 Accepts]: Start accepts. Automaton has 6266 states and 16498 transitions. Word has length 48 [2021-07-13 19:46:01,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:01,673 INFO L482 AbstractCegarLoop]: Abstraction has 6266 states and 16498 transitions. [2021-07-13 19:46:01,673 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) [2021-07-13 19:46:01,674 INFO L276 IsEmpty]: Start isEmpty. Operand 6266 states and 16498 transitions. [2021-07-13 19:46:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:01,683 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:01,683 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] [2021-07-13 19:46:01,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-13 19:46:01,684 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:01,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:01,684 INFO L82 PathProgramCache]: Analyzing trace with hash -201136230, now seen corresponding path program 19 times [2021-07-13 19:46:01,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:01,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911692736] [2021-07-13 19:46:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:01,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:01,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911692736] [2021-07-13 19:46:01,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911692736] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:01,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:01,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:46:01,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395575442] [2021-07-13 19:46:01,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:46:01,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:01,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:46:01,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:46:01,829 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) [2021-07-13 19:46:02,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:02,096 INFO L93 Difference]: Finished difference Result 7158 states and 18653 transitions. [2021-07-13 19:46:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-13 19:46:02,096 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 [2021-07-13 19:46:02,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:02,105 INFO L225 Difference]: With dead ends: 7158 [2021-07-13 19:46:02,105 INFO L226 Difference]: Without dead ends: 7033 [2021-07-13 19:46:02,106 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 164.6ms TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-07-13 19:46:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2021-07-13 19:46:02,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 6235. [2021-07-13 19:46:02,205 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) [2021-07-13 19:46:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6235 states to 6235 states and 16405 transitions. [2021-07-13 19:46:02,215 INFO L78 Accepts]: Start accepts. Automaton has 6235 states and 16405 transitions. Word has length 48 [2021-07-13 19:46:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:02,215 INFO L482 AbstractCegarLoop]: Abstraction has 6235 states and 16405 transitions. [2021-07-13 19:46:02,215 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) [2021-07-13 19:46:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 6235 states and 16405 transitions. [2021-07-13 19:46:02,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:02,223 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:02,223 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] [2021-07-13 19:46:02,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-13 19:46:02,224 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:02,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:02,224 INFO L82 PathProgramCache]: Analyzing trace with hash 588737442, now seen corresponding path program 20 times [2021-07-13 19:46:02,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:02,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959771667] [2021-07-13 19:46:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:02,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:02,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959771667] [2021-07-13 19:46:02,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959771667] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:02,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:02,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:46:02,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148846211] [2021-07-13 19:46:02,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:46:02,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:02,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:46:02,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:02,310 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) [2021-07-13 19:46:02,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:02,552 INFO L93 Difference]: Finished difference Result 9940 states and 25923 transitions. [2021-07-13 19:46:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-13 19:46:02,552 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 [2021-07-13 19:46:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:02,565 INFO L225 Difference]: With dead ends: 9940 [2021-07-13 19:46:02,565 INFO L226 Difference]: Without dead ends: 9835 [2021-07-13 19:46:02,565 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 120.6ms TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2021-07-13 19:46:02,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9835 states. [2021-07-13 19:46:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9835 to 6223. [2021-07-13 19:46:02,691 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) [2021-07-13 19:46:02,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 16373 transitions. [2021-07-13 19:46:02,744 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 16373 transitions. Word has length 48 [2021-07-13 19:46:02,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:02,744 INFO L482 AbstractCegarLoop]: Abstraction has 6223 states and 16373 transitions. [2021-07-13 19:46:02,744 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) [2021-07-13 19:46:02,745 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 16373 transitions. [2021-07-13 19:46:02,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:02,753 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:02,753 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] [2021-07-13 19:46:02,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-13 19:46:02,753 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:02,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:02,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1128413438, now seen corresponding path program 21 times [2021-07-13 19:46:02,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:02,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951370380] [2021-07-13 19:46:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:02,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:02,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:02,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951370380] [2021-07-13 19:46:02,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951370380] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:02,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:02,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:46:02,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585349729] [2021-07-13 19:46:02,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:46:02,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:02,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:46:02,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:02,847 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) [2021-07-13 19:46:03,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:03,168 INFO L93 Difference]: Finished difference Result 9861 states and 25623 transitions. [2021-07-13 19:46:03,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:46:03,169 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 [2021-07-13 19:46:03,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:03,184 INFO L225 Difference]: With dead ends: 9861 [2021-07-13 19:46:03,184 INFO L226 Difference]: Without dead ends: 9631 [2021-07-13 19:46:03,184 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 145.4ms TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2021-07-13 19:46:03,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9631 states. [2021-07-13 19:46:03,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9631 to 5746. [2021-07-13 19:46:03,320 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) [2021-07-13 19:46:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5746 states to 5746 states and 15065 transitions. [2021-07-13 19:46:03,330 INFO L78 Accepts]: Start accepts. Automaton has 5746 states and 15065 transitions. Word has length 48 [2021-07-13 19:46:03,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:03,330 INFO L482 AbstractCegarLoop]: Abstraction has 5746 states and 15065 transitions. [2021-07-13 19:46:03,330 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) [2021-07-13 19:46:03,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5746 states and 15065 transitions. [2021-07-13 19:46:03,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:03,338 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:03,338 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] [2021-07-13 19:46:03,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-13 19:46:03,338 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:03,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:03,339 INFO L82 PathProgramCache]: Analyzing trace with hash -970339206, now seen corresponding path program 22 times [2021-07-13 19:46:03,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:03,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908434403] [2021-07-13 19:46:03,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:03,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:03,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908434403] [2021-07-13 19:46:03,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908434403] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:03,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:03,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-07-13 19:46:03,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096013719] [2021-07-13 19:46:03,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-13 19:46:03,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:03,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-13 19:46:03,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-07-13 19:46:03,472 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) [2021-07-13 19:46:03,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:03,886 INFO L93 Difference]: Finished difference Result 8727 states and 22466 transitions. [2021-07-13 19:46:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-13 19:46:03,887 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 [2021-07-13 19:46:03,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:03,898 INFO L225 Difference]: With dead ends: 8727 [2021-07-13 19:46:03,898 INFO L226 Difference]: Without dead ends: 8599 [2021-07-13 19:46:03,899 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 165.9ms TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-07-13 19:46:03,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8599 states. [2021-07-13 19:46:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8599 to 5743. [2021-07-13 19:46:04,026 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) [2021-07-13 19:46:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5743 states to 5743 states and 15053 transitions. [2021-07-13 19:46:04,034 INFO L78 Accepts]: Start accepts. Automaton has 5743 states and 15053 transitions. Word has length 48 [2021-07-13 19:46:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:04,034 INFO L482 AbstractCegarLoop]: Abstraction has 5743 states and 15053 transitions. [2021-07-13 19:46:04,034 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) [2021-07-13 19:46:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5743 states and 15053 transitions. [2021-07-13 19:46:04,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:04,040 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:04,040 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] [2021-07-13 19:46:04,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-13 19:46:04,040 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:04,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:04,041 INFO L82 PathProgramCache]: Analyzing trace with hash -782764444, now seen corresponding path program 23 times [2021-07-13 19:46:04,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:04,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493847583] [2021-07-13 19:46:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:04,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:04,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:04,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493847583] [2021-07-13 19:46:04,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493847583] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:04,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:04,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:46:04,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390157947] [2021-07-13 19:46:04,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:46:04,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:04,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:46:04,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:04,107 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) [2021-07-13 19:46:04,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:04,463 INFO L93 Difference]: Finished difference Result 12643 states and 32745 transitions. [2021-07-13 19:46:04,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 19:46:04,463 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 [2021-07-13 19:46:04,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:04,481 INFO L225 Difference]: With dead ends: 12643 [2021-07-13 19:46:04,481 INFO L226 Difference]: Without dead ends: 12505 [2021-07-13 19:46:04,481 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 150.5ms TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-07-13 19:46:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12505 states. [2021-07-13 19:46:04,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12505 to 5704. [2021-07-13 19:46:04,616 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) [2021-07-13 19:46:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 14966 transitions. [2021-07-13 19:46:04,625 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 14966 transitions. Word has length 48 [2021-07-13 19:46:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:04,625 INFO L482 AbstractCegarLoop]: Abstraction has 5704 states and 14966 transitions. [2021-07-13 19:46:04,625 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) [2021-07-13 19:46:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 14966 transitions. [2021-07-13 19:46:04,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:04,631 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:04,631 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] [2021-07-13 19:46:04,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-13 19:46:04,631 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:04,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:04,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1112659756, now seen corresponding path program 24 times [2021-07-13 19:46:04,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:04,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442628588] [2021-07-13 19:46:04,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:04,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:04,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442628588] [2021-07-13 19:46:04,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442628588] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:04,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:04,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:46:04,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350952362] [2021-07-13 19:46:04,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 19:46:04,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:04,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 19:46:04,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:46:04,692 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) [2021-07-13 19:46:04,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:04,831 INFO L93 Difference]: Finished difference Result 6400 states and 16590 transitions. [2021-07-13 19:46:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 19:46:04,831 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 [2021-07-13 19:46:04,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:04,838 INFO L225 Difference]: With dead ends: 6400 [2021-07-13 19:46:04,838 INFO L226 Difference]: Without dead ends: 6102 [2021-07-13 19:46:04,839 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:46:04,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6102 states. [2021-07-13 19:46:04,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6102 to 5743. [2021-07-13 19:46:04,913 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) [2021-07-13 19:46:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5743 states to 5743 states and 14969 transitions. [2021-07-13 19:46:04,920 INFO L78 Accepts]: Start accepts. Automaton has 5743 states and 14969 transitions. Word has length 48 [2021-07-13 19:46:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:04,920 INFO L482 AbstractCegarLoop]: Abstraction has 5743 states and 14969 transitions. [2021-07-13 19:46:04,920 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) [2021-07-13 19:46:04,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5743 states and 14969 transitions. [2021-07-13 19:46:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:04,928 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:04,928 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] [2021-07-13 19:46:04,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-13 19:46:04,928 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:04,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1836625034, now seen corresponding path program 25 times [2021-07-13 19:46:04,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:04,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300320603] [2021-07-13 19:46:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:05,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:05,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:05,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300320603] [2021-07-13 19:46:05,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300320603] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:05,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:05,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 19:46:05,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474319474] [2021-07-13 19:46:05,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 19:46:05,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:05,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 19:46:05,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:46:05,094 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) [2021-07-13 19:46:05,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:05,410 INFO L93 Difference]: Finished difference Result 7527 states and 19417 transitions. [2021-07-13 19:46:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-13 19:46:05,410 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 [2021-07-13 19:46:05,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:05,424 INFO L225 Difference]: With dead ends: 7527 [2021-07-13 19:46:05,424 INFO L226 Difference]: Without dead ends: 7323 [2021-07-13 19:46:05,424 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 200.8ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-07-13 19:46:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7323 states. [2021-07-13 19:46:05,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7323 to 5664. [2021-07-13 19:46:05,578 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) [2021-07-13 19:46:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 14782 transitions. [2021-07-13 19:46:05,590 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 14782 transitions. Word has length 48 [2021-07-13 19:46:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:05,591 INFO L482 AbstractCegarLoop]: Abstraction has 5664 states and 14782 transitions. [2021-07-13 19:46:05,591 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) [2021-07-13 19:46:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 14782 transitions. [2021-07-13 19:46:05,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:05,599 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:05,599 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] [2021-07-13 19:46:05,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-13 19:46:05,599 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:05,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1515232300, now seen corresponding path program 26 times [2021-07-13 19:46:05,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:05,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660444442] [2021-07-13 19:46:05,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:05,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:05,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660444442] [2021-07-13 19:46:05,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660444442] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:05,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:05,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:46:05,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077085715] [2021-07-13 19:46:05,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:46:05,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:05,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:46:05,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:46:05,731 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) [2021-07-13 19:46:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:05,979 INFO L93 Difference]: Finished difference Result 6807 states and 17527 transitions. [2021-07-13 19:46:05,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-13 19:46:05,979 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 [2021-07-13 19:46:05,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:05,991 INFO L225 Difference]: With dead ends: 6807 [2021-07-13 19:46:05,991 INFO L226 Difference]: Without dead ends: 6488 [2021-07-13 19:46:05,991 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-07-13 19:46:06,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2021-07-13 19:46:06,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5803. [2021-07-13 19:46:06,108 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) [2021-07-13 19:46:06,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 15208 transitions. [2021-07-13 19:46:06,121 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 15208 transitions. Word has length 48 [2021-07-13 19:46:06,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:06,121 INFO L482 AbstractCegarLoop]: Abstraction has 5803 states and 15208 transitions. [2021-07-13 19:46:06,121 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) [2021-07-13 19:46:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 15208 transitions. [2021-07-13 19:46:06,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:06,129 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:06,129 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] [2021-07-13 19:46:06,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-13 19:46:06,129 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:06,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:06,130 INFO L82 PathProgramCache]: Analyzing trace with hash 954277634, now seen corresponding path program 27 times [2021-07-13 19:46:06,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:06,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878833731] [2021-07-13 19:46:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:06,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:06,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878833731] [2021-07-13 19:46:06,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878833731] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:06,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:06,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:46:06,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782355709] [2021-07-13 19:46:06,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:46:06,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:06,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:46:06,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:46:06,140 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) [2021-07-13 19:46:06,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:06,160 INFO L93 Difference]: Finished difference Result 5451 states and 13870 transitions. [2021-07-13 19:46:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:46:06,160 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 [2021-07-13 19:46:06,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:06,168 INFO L225 Difference]: With dead ends: 5451 [2021-07-13 19:46:06,168 INFO L226 Difference]: Without dead ends: 5451 [2021-07-13 19:46:06,169 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:46:06,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2021-07-13 19:46:06,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 5445. [2021-07-13 19:46:06,266 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) [2021-07-13 19:46:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5445 states to 5445 states and 13857 transitions. [2021-07-13 19:46:06,277 INFO L78 Accepts]: Start accepts. Automaton has 5445 states and 13857 transitions. Word has length 48 [2021-07-13 19:46:06,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:06,277 INFO L482 AbstractCegarLoop]: Abstraction has 5445 states and 13857 transitions. [2021-07-13 19:46:06,277 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) [2021-07-13 19:46:06,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5445 states and 13857 transitions. [2021-07-13 19:46:06,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:06,285 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:06,285 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] [2021-07-13 19:46:06,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-13 19:46:06,285 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash -225849054, now seen corresponding path program 28 times [2021-07-13 19:46:06,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:06,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443378815] [2021-07-13 19:46:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:06,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:06,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443378815] [2021-07-13 19:46:06,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443378815] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:06,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:06,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:46:06,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892651169] [2021-07-13 19:46:06,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:46:06,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:06,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:46:06,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:06,351 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) [2021-07-13 19:46:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:06,519 INFO L93 Difference]: Finished difference Result 6331 states and 15911 transitions. [2021-07-13 19:46:06,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 19:46:06,520 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 [2021-07-13 19:46:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:06,529 INFO L225 Difference]: With dead ends: 6331 [2021-07-13 19:46:06,530 INFO L226 Difference]: Without dead ends: 5944 [2021-07-13 19:46:06,530 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:46:06,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2021-07-13 19:46:06,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5364. [2021-07-13 19:46:06,662 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) [2021-07-13 19:46:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5364 states to 5364 states and 13589 transitions. [2021-07-13 19:46:06,674 INFO L78 Accepts]: Start accepts. Automaton has 5364 states and 13589 transitions. Word has length 48 [2021-07-13 19:46:06,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:06,674 INFO L482 AbstractCegarLoop]: Abstraction has 5364 states and 13589 transitions. [2021-07-13 19:46:06,674 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) [2021-07-13 19:46:06,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5364 states and 13589 transitions. [2021-07-13 19:46:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:06,681 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:06,682 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] [2021-07-13 19:46:06,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-13 19:46:06,682 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:06,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:06,683 INFO L82 PathProgramCache]: Analyzing trace with hash 434899342, now seen corresponding path program 29 times [2021-07-13 19:46:06,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:06,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732087556] [2021-07-13 19:46:06,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:06,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:06,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732087556] [2021-07-13 19:46:06,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732087556] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:06,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:06,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:46:06,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617774700] [2021-07-13 19:46:06,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:46:06,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:06,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:46:06,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:46:06,780 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) [2021-07-13 19:46:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:07,101 INFO L93 Difference]: Finished difference Result 8051 states and 20260 transitions. [2021-07-13 19:46:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-13 19:46:07,101 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 [2021-07-13 19:46:07,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:07,112 INFO L225 Difference]: With dead ends: 8051 [2021-07-13 19:46:07,113 INFO L226 Difference]: Without dead ends: 7893 [2021-07-13 19:46:07,113 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-07-13 19:46:07,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7893 states. [2021-07-13 19:46:07,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7893 to 5764. [2021-07-13 19:46:07,213 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) [2021-07-13 19:46:07,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5764 states to 5764 states and 14593 transitions. [2021-07-13 19:46:07,222 INFO L78 Accepts]: Start accepts. Automaton has 5764 states and 14593 transitions. Word has length 48 [2021-07-13 19:46:07,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:07,223 INFO L482 AbstractCegarLoop]: Abstraction has 5764 states and 14593 transitions. [2021-07-13 19:46:07,223 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) [2021-07-13 19:46:07,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5764 states and 14593 transitions. [2021-07-13 19:46:07,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:07,229 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:07,229 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] [2021-07-13 19:46:07,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-13 19:46:07,229 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:07,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:07,230 INFO L82 PathProgramCache]: Analyzing trace with hash 888719650, now seen corresponding path program 30 times [2021-07-13 19:46:07,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:07,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801699609] [2021-07-13 19:46:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:07,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:07,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801699609] [2021-07-13 19:46:07,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801699609] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:07,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:07,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:46:07,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613694967] [2021-07-13 19:46:07,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:46:07,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:07,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:46:07,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:07,314 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) [2021-07-13 19:46:07,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:07,587 INFO L93 Difference]: Finished difference Result 9080 states and 22731 transitions. [2021-07-13 19:46:07,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-13 19:46:07,588 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 [2021-07-13 19:46:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:07,600 INFO L225 Difference]: With dead ends: 9080 [2021-07-13 19:46:07,600 INFO L226 Difference]: Without dead ends: 9014 [2021-07-13 19:46:07,600 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 133.1ms TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2021-07-13 19:46:07,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9014 states. [2021-07-13 19:46:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9014 to 6019. [2021-07-13 19:46:07,707 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) [2021-07-13 19:46:07,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6019 states to 6019 states and 15112 transitions. [2021-07-13 19:46:07,716 INFO L78 Accepts]: Start accepts. Automaton has 6019 states and 15112 transitions. Word has length 48 [2021-07-13 19:46:07,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:07,717 INFO L482 AbstractCegarLoop]: Abstraction has 6019 states and 15112 transitions. [2021-07-13 19:46:07,717 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) [2021-07-13 19:46:07,717 INFO L276 IsEmpty]: Start isEmpty. Operand 6019 states and 15112 transitions. [2021-07-13 19:46:07,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:07,723 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:07,723 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] [2021-07-13 19:46:07,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-13 19:46:07,723 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:07,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:07,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1883614816, now seen corresponding path program 31 times [2021-07-13 19:46:07,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:07,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750412148] [2021-07-13 19:46:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:07,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:07,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750412148] [2021-07-13 19:46:07,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750412148] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:07,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:07,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:46:07,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597833617] [2021-07-13 19:46:07,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:46:07,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:07,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:46:07,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:46:07,828 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) [2021-07-13 19:46:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:08,161 INFO L93 Difference]: Finished difference Result 7933 states and 19517 transitions. [2021-07-13 19:46:08,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 19:46:08,161 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 [2021-07-13 19:46:08,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:08,171 INFO L225 Difference]: With dead ends: 7933 [2021-07-13 19:46:08,171 INFO L226 Difference]: Without dead ends: 7879 [2021-07-13 19:46:08,172 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 157.1ms TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2021-07-13 19:46:08,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7879 states. [2021-07-13 19:46:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7879 to 5623. [2021-07-13 19:46:08,283 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) [2021-07-13 19:46:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5623 states to 5623 states and 14049 transitions. [2021-07-13 19:46:08,292 INFO L78 Accepts]: Start accepts. Automaton has 5623 states and 14049 transitions. Word has length 48 [2021-07-13 19:46:08,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:08,292 INFO L482 AbstractCegarLoop]: Abstraction has 5623 states and 14049 transitions. [2021-07-13 19:46:08,292 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) [2021-07-13 19:46:08,292 INFO L276 IsEmpty]: Start isEmpty. Operand 5623 states and 14049 transitions. [2021-07-13 19:46:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:08,298 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:08,298 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] [2021-07-13 19:46:08,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-13 19:46:08,298 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:08,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:08,299 INFO L82 PathProgramCache]: Analyzing trace with hash -772461512, now seen corresponding path program 32 times [2021-07-13 19:46:08,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:08,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363538071] [2021-07-13 19:46:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:08,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:08,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363538071] [2021-07-13 19:46:08,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363538071] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:08,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:08,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:46:08,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692760312] [2021-07-13 19:46:08,424 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:46:08,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:08,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:46:08,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:08,426 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) [2021-07-13 19:46:08,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:08,580 INFO L93 Difference]: Finished difference Result 5919 states and 14665 transitions. [2021-07-13 19:46:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 19:46:08,581 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 [2021-07-13 19:46:08,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:08,590 INFO L225 Difference]: With dead ends: 5919 [2021-07-13 19:46:08,590 INFO L226 Difference]: Without dead ends: 5624 [2021-07-13 19:46:08,591 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:46:08,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5624 states. [2021-07-13 19:46:08,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5624 to 4865. [2021-07-13 19:46:08,680 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) [2021-07-13 19:46:08,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4865 states to 4865 states and 12097 transitions. [2021-07-13 19:46:08,687 INFO L78 Accepts]: Start accepts. Automaton has 4865 states and 12097 transitions. Word has length 48 [2021-07-13 19:46:08,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:08,687 INFO L482 AbstractCegarLoop]: Abstraction has 4865 states and 12097 transitions. [2021-07-13 19:46:08,687 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) [2021-07-13 19:46:08,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4865 states and 12097 transitions. [2021-07-13 19:46:08,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:08,692 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:08,692 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] [2021-07-13 19:46:08,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-13 19:46:08,692 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:08,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2029851034, now seen corresponding path program 33 times [2021-07-13 19:46:08,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:08,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123697799] [2021-07-13 19:46:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:08,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:08,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123697799] [2021-07-13 19:46:08,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123697799] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:08,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:08,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:46:08,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294564228] [2021-07-13 19:46:08,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:46:08,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:08,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:46:08,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:08,753 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) [2021-07-13 19:46:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:08,911 INFO L93 Difference]: Finished difference Result 5199 states and 12796 transitions. [2021-07-13 19:46:08,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 19:46:08,911 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 [2021-07-13 19:46:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:08,919 INFO L225 Difference]: With dead ends: 5199 [2021-07-13 19:46:08,919 INFO L226 Difference]: Without dead ends: 5105 [2021-07-13 19:46:08,919 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 130.5ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:46:08,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5105 states. [2021-07-13 19:46:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5105 to 4845. [2021-07-13 19:46:09,007 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) [2021-07-13 19:46:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 12027 transitions. [2021-07-13 19:46:09,013 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 12027 transitions. Word has length 48 [2021-07-13 19:46:09,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:09,013 INFO L482 AbstractCegarLoop]: Abstraction has 4845 states and 12027 transitions. [2021-07-13 19:46:09,013 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) [2021-07-13 19:46:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 12027 transitions. [2021-07-13 19:46:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:09,018 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:09,018 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] [2021-07-13 19:46:09,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-13 19:46:09,018 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:09,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:09,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1435746146, now seen corresponding path program 34 times [2021-07-13 19:46:09,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:09,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868548965] [2021-07-13 19:46:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:09,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:09,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868548965] [2021-07-13 19:46:09,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868548965] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:09,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:09,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:46:09,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435930333] [2021-07-13 19:46:09,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:46:09,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:09,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:46:09,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:46:09,086 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) [2021-07-13 19:46:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:09,234 INFO L93 Difference]: Finished difference Result 5172 states and 12716 transitions. [2021-07-13 19:46:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:46:09,234 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 [2021-07-13 19:46:09,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:09,242 INFO L225 Difference]: With dead ends: 5172 [2021-07-13 19:46:09,242 INFO L226 Difference]: Without dead ends: 5110 [2021-07-13 19:46:09,243 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 66.5ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:46:09,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2021-07-13 19:46:09,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 4822. [2021-07-13 19:46:09,308 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) [2021-07-13 19:46:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 11937 transitions. [2021-07-13 19:46:09,314 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 11937 transitions. Word has length 48 [2021-07-13 19:46:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:09,314 INFO L482 AbstractCegarLoop]: Abstraction has 4822 states and 11937 transitions. [2021-07-13 19:46:09,315 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) [2021-07-13 19:46:09,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 11937 transitions. [2021-07-13 19:46:09,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:09,320 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:09,320 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] [2021-07-13 19:46:09,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-13 19:46:09,320 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:09,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:09,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1953229120, now seen corresponding path program 35 times [2021-07-13 19:46:09,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:09,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658605939] [2021-07-13 19:46:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:09,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:09,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658605939] [2021-07-13 19:46:09,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658605939] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:09,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:09,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:46:09,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870264388] [2021-07-13 19:46:09,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:46:09,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:09,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:46:09,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:09,407 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) [2021-07-13 19:46:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:09,728 INFO L93 Difference]: Finished difference Result 6350 states and 15452 transitions. [2021-07-13 19:46:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 19:46:09,729 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 [2021-07-13 19:46:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:09,736 INFO L225 Difference]: With dead ends: 6350 [2021-07-13 19:46:09,736 INFO L226 Difference]: Without dead ends: 6284 [2021-07-13 19:46:09,736 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 149.5ms TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:46:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6284 states. [2021-07-13 19:46:09,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6284 to 4736. [2021-07-13 19:46:09,816 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) [2021-07-13 19:46:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 11676 transitions. [2021-07-13 19:46:09,822 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 11676 transitions. Word has length 48 [2021-07-13 19:46:09,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:09,822 INFO L482 AbstractCegarLoop]: Abstraction has 4736 states and 11676 transitions. [2021-07-13 19:46:09,823 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) [2021-07-13 19:46:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 11676 transitions. [2021-07-13 19:46:09,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:09,827 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:09,827 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] [2021-07-13 19:46:09,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-13 19:46:09,827 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:09,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:09,828 INFO L82 PathProgramCache]: Analyzing trace with hash -958333954, now seen corresponding path program 36 times [2021-07-13 19:46:09,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:09,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540656569] [2021-07-13 19:46:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:09,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:09,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540656569] [2021-07-13 19:46:09,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540656569] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:09,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:09,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:46:09,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514861642] [2021-07-13 19:46:09,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:46:09,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:09,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:46:09,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:46:09,923 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) [2021-07-13 19:46:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:10,187 INFO L93 Difference]: Finished difference Result 5924 states and 14189 transitions. [2021-07-13 19:46:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-13 19:46:10,188 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 [2021-07-13 19:46:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:10,194 INFO L225 Difference]: With dead ends: 5924 [2021-07-13 19:46:10,194 INFO L226 Difference]: Without dead ends: 5768 [2021-07-13 19:46:10,194 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 126.0ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-13 19:46:10,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5768 states. [2021-07-13 19:46:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5768 to 3548. [2021-07-13 19:46:10,255 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) [2021-07-13 19:46:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 8635 transitions. [2021-07-13 19:46:10,259 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 8635 transitions. Word has length 48 [2021-07-13 19:46:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:10,259 INFO L482 AbstractCegarLoop]: Abstraction has 3548 states and 8635 transitions. [2021-07-13 19:46:10,259 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) [2021-07-13 19:46:10,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 8635 transitions. [2021-07-13 19:46:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:10,263 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:10,263 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] [2021-07-13 19:46:10,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-13 19:46:10,263 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:10,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:10,263 INFO L82 PathProgramCache]: Analyzing trace with hash -684595368, now seen corresponding path program 37 times [2021-07-13 19:46:10,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:10,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986001382] [2021-07-13 19:46:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:10,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:10,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986001382] [2021-07-13 19:46:10,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986001382] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:10,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:10,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:46:10,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491311860] [2021-07-13 19:46:10,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:46:10,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:10,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:46:10,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:10,346 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) [2021-07-13 19:46:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:10,518 INFO L93 Difference]: Finished difference Result 3939 states and 9569 transitions. [2021-07-13 19:46:10,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 19:46:10,519 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 [2021-07-13 19:46:10,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:10,523 INFO L225 Difference]: With dead ends: 3939 [2021-07-13 19:46:10,523 INFO L226 Difference]: Without dead ends: 3790 [2021-07-13 19:46:10,523 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 98.4ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:46:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2021-07-13 19:46:10,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3471. [2021-07-13 19:46:10,570 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) [2021-07-13 19:46:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3471 states to 3471 states and 8467 transitions. [2021-07-13 19:46:10,574 INFO L78 Accepts]: Start accepts. Automaton has 3471 states and 8467 transitions. Word has length 48 [2021-07-13 19:46:10,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:10,574 INFO L482 AbstractCegarLoop]: Abstraction has 3471 states and 8467 transitions. [2021-07-13 19:46:10,574 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) [2021-07-13 19:46:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3471 states and 8467 transitions. [2021-07-13 19:46:10,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:10,578 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:10,578 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] [2021-07-13 19:46:10,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-13 19:46:10,578 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:10,578 INFO L82 PathProgramCache]: Analyzing trace with hash -754552418, now seen corresponding path program 38 times [2021-07-13 19:46:10,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:10,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688557911] [2021-07-13 19:46:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:10,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:10,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688557911] [2021-07-13 19:46:10,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688557911] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:10,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:10,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 19:46:10,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537859842] [2021-07-13 19:46:10,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 19:46:10,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:10,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 19:46:10,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:46:10,702 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) [2021-07-13 19:46:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:10,998 INFO L93 Difference]: Finished difference Result 4930 states and 11873 transitions. [2021-07-13 19:46:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-13 19:46:10,999 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 [2021-07-13 19:46:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:11,004 INFO L225 Difference]: With dead ends: 4930 [2021-07-13 19:46:11,004 INFO L226 Difference]: Without dead ends: 4812 [2021-07-13 19:46:11,005 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-07-13 19:46:11,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4812 states. [2021-07-13 19:46:11,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4812 to 3466. [2021-07-13 19:46:11,056 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) [2021-07-13 19:46:11,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 8455 transitions. [2021-07-13 19:46:11,060 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 8455 transitions. Word has length 48 [2021-07-13 19:46:11,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:11,060 INFO L482 AbstractCegarLoop]: Abstraction has 3466 states and 8455 transitions. [2021-07-13 19:46:11,060 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) [2021-07-13 19:46:11,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 8455 transitions. [2021-07-13 19:46:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:11,063 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:11,063 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] [2021-07-13 19:46:11,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-13 19:46:11,064 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:11,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:11,064 INFO L82 PathProgramCache]: Analyzing trace with hash -602477630, now seen corresponding path program 39 times [2021-07-13 19:46:11,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:11,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709005115] [2021-07-13 19:46:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:11,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:11,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709005115] [2021-07-13 19:46:11,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709005115] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:11,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:11,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 19:46:11,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979764416] [2021-07-13 19:46:11,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 19:46:11,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:11,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 19:46:11,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-07-13 19:46:11,188 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) [2021-07-13 19:46:11,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:11,552 INFO L93 Difference]: Finished difference Result 4791 states and 11561 transitions. [2021-07-13 19:46:11,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-13 19:46:11,553 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 [2021-07-13 19:46:11,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:11,559 INFO L225 Difference]: With dead ends: 4791 [2021-07-13 19:46:11,559 INFO L226 Difference]: Without dead ends: 4653 [2021-07-13 19:46:11,559 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 158.2ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-07-13 19:46:11,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2021-07-13 19:46:11,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 3307. [2021-07-13 19:46:11,631 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) [2021-07-13 19:46:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 8101 transitions. [2021-07-13 19:46:11,637 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 8101 transitions. Word has length 48 [2021-07-13 19:46:11,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:11,637 INFO L482 AbstractCegarLoop]: Abstraction has 3307 states and 8101 transitions. [2021-07-13 19:46:11,637 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) [2021-07-13 19:46:11,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 8101 transitions. [2021-07-13 19:46:11,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:11,641 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:11,641 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] [2021-07-13 19:46:11,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-13 19:46:11,641 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:11,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:11,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1269546636, now seen corresponding path program 40 times [2021-07-13 19:46:11,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:11,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489499366] [2021-07-13 19:46:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:11,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:11,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489499366] [2021-07-13 19:46:11,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489499366] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:11,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:11,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:46:11,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126952259] [2021-07-13 19:46:11,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:46:11,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:11,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:46:11,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:11,713 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) [2021-07-13 19:46:11,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:11,872 INFO L93 Difference]: Finished difference Result 3710 states and 8986 transitions. [2021-07-13 19:46:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 19:46:11,872 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 [2021-07-13 19:46:11,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:11,878 INFO L225 Difference]: With dead ends: 3710 [2021-07-13 19:46:11,878 INFO L226 Difference]: Without dead ends: 3415 [2021-07-13 19:46:11,878 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 132.0ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:46:11,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2021-07-13 19:46:11,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 3164. [2021-07-13 19:46:11,942 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) [2021-07-13 19:46:11,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 7706 transitions. [2021-07-13 19:46:11,947 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 7706 transitions. Word has length 48 [2021-07-13 19:46:11,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:11,948 INFO L482 AbstractCegarLoop]: Abstraction has 3164 states and 7706 transitions. [2021-07-13 19:46:11,948 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) [2021-07-13 19:46:11,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 7706 transitions. [2021-07-13 19:46:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:11,952 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:11,952 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] [2021-07-13 19:46:11,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-13 19:46:11,952 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:11,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:11,952 INFO L82 PathProgramCache]: Analyzing trace with hash -729504526, now seen corresponding path program 41 times [2021-07-13 19:46:11,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:11,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649101659] [2021-07-13 19:46:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:12,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:12,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649101659] [2021-07-13 19:46:12,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649101659] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:12,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:12,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:46:12,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860022802] [2021-07-13 19:46:12,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:46:12,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:12,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:46:12,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:46:12,064 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) [2021-07-13 19:46:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:12,258 INFO L93 Difference]: Finished difference Result 4602 states and 11100 transitions. [2021-07-13 19:46:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 19:46:12,258 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 [2021-07-13 19:46:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:12,264 INFO L225 Difference]: With dead ends: 4602 [2021-07-13 19:46:12,264 INFO L226 Difference]: Without dead ends: 4299 [2021-07-13 19:46:12,264 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-13 19:46:12,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2021-07-13 19:46:12,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 3522. [2021-07-13 19:46:12,323 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) [2021-07-13 19:46:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 8493 transitions. [2021-07-13 19:46:12,329 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 8493 transitions. Word has length 48 [2021-07-13 19:46:12,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:12,329 INFO L482 AbstractCegarLoop]: Abstraction has 3522 states and 8493 transitions. [2021-07-13 19:46:12,329 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) [2021-07-13 19:46:12,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 8493 transitions. [2021-07-13 19:46:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:12,333 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:12,334 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] [2021-07-13 19:46:12,334 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-13 19:46:12,334 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:12,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:12,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1279309328, now seen corresponding path program 42 times [2021-07-13 19:46:12,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:12,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471102061] [2021-07-13 19:46:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:12,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:12,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471102061] [2021-07-13 19:46:12,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471102061] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:12,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:12,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:46:12,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671127163] [2021-07-13 19:46:12,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:46:12,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:12,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:46:12,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:46:12,433 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) [2021-07-13 19:46:12,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:12,596 INFO L93 Difference]: Finished difference Result 4000 states and 9565 transitions. [2021-07-13 19:46:12,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 19:46:12,597 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 [2021-07-13 19:46:12,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:12,601 INFO L225 Difference]: With dead ends: 4000 [2021-07-13 19:46:12,601 INFO L226 Difference]: Without dead ends: 3667 [2021-07-13 19:46:12,601 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-13 19:46:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2021-07-13 19:46:12,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3185. [2021-07-13 19:46:12,642 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) [2021-07-13 19:46:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 7659 transitions. [2021-07-13 19:46:12,645 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 7659 transitions. Word has length 48 [2021-07-13 19:46:12,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:12,645 INFO L482 AbstractCegarLoop]: Abstraction has 3185 states and 7659 transitions. [2021-07-13 19:46:12,645 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) [2021-07-13 19:46:12,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 7659 transitions. [2021-07-13 19:46:12,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:12,648 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:12,648 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] [2021-07-13 19:46:12,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-13 19:46:12,649 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:12,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:12,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1417277836, now seen corresponding path program 43 times [2021-07-13 19:46:12,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:12,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284921799] [2021-07-13 19:46:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:12,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:12,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284921799] [2021-07-13 19:46:12,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284921799] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:12,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:12,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:46:12,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933678953] [2021-07-13 19:46:12,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:46:12,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:12,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:46:12,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:12,716 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) [2021-07-13 19:46:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:12,862 INFO L93 Difference]: Finished difference Result 3433 states and 8176 transitions. [2021-07-13 19:46:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 19:46:12,863 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 [2021-07-13 19:46:12,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:12,868 INFO L225 Difference]: With dead ends: 3433 [2021-07-13 19:46:12,868 INFO L226 Difference]: Without dead ends: 2919 [2021-07-13 19:46:12,870 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-13 19:46:12,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2021-07-13 19:46:12,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2594. [2021-07-13 19:46:12,913 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) [2021-07-13 19:46:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 6184 transitions. [2021-07-13 19:46:12,917 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 6184 transitions. Word has length 48 [2021-07-13 19:46:12,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:12,919 INFO L482 AbstractCegarLoop]: Abstraction has 2594 states and 6184 transitions. [2021-07-13 19:46:12,919 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) [2021-07-13 19:46:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 6184 transitions. [2021-07-13 19:46:12,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:12,923 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:12,924 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] [2021-07-13 19:46:12,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-13 19:46:12,924 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:12,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:12,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1548197130, now seen corresponding path program 44 times [2021-07-13 19:46:12,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:12,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973583756] [2021-07-13 19:46:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:13,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:13,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973583756] [2021-07-13 19:46:13,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973583756] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:13,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:13,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:46:13,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282630118] [2021-07-13 19:46:13,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:46:13,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:13,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:46:13,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:46:13,034 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) [2021-07-13 19:46:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:13,225 INFO L93 Difference]: Finished difference Result 3030 states and 7148 transitions. [2021-07-13 19:46:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 19:46:13,226 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 [2021-07-13 19:46:13,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:13,230 INFO L225 Difference]: With dead ends: 3030 [2021-07-13 19:46:13,230 INFO L226 Difference]: Without dead ends: 2807 [2021-07-13 19:46:13,230 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 127.8ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-13 19:46:13,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2021-07-13 19:46:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2528. [2021-07-13 19:46:13,276 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) [2021-07-13 19:46:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 5968 transitions. [2021-07-13 19:46:13,280 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 5968 transitions. Word has length 48 [2021-07-13 19:46:13,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:13,280 INFO L482 AbstractCegarLoop]: Abstraction has 2528 states and 5968 transitions. [2021-07-13 19:46:13,280 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) [2021-07-13 19:46:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 5968 transitions. [2021-07-13 19:46:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:13,283 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:13,284 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] [2021-07-13 19:46:13,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-13 19:46:13,284 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:13,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1674060612, now seen corresponding path program 45 times [2021-07-13 19:46:13,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:13,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506128568] [2021-07-13 19:46:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:13,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:13,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:13,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506128568] [2021-07-13 19:46:13,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506128568] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:13,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:13,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:46:13,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271288785] [2021-07-13 19:46:13,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:46:13,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:13,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:46:13,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:46:13,350 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) [2021-07-13 19:46:13,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:13,491 INFO L93 Difference]: Finished difference Result 2858 states and 6700 transitions. [2021-07-13 19:46:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 19:46:13,492 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 [2021-07-13 19:46:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:13,496 INFO L225 Difference]: With dead ends: 2858 [2021-07-13 19:46:13,496 INFO L226 Difference]: Without dead ends: 2825 [2021-07-13 19:46:13,496 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:46:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2021-07-13 19:46:13,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2504. [2021-07-13 19:46:13,529 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) [2021-07-13 19:46:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 5909 transitions. [2021-07-13 19:46:13,532 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 5909 transitions. Word has length 48 [2021-07-13 19:46:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:13,532 INFO L482 AbstractCegarLoop]: Abstraction has 2504 states and 5909 transitions. [2021-07-13 19:46:13,532 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) [2021-07-13 19:46:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 5909 transitions. [2021-07-13 19:46:13,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:13,534 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:13,534 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] [2021-07-13 19:46:13,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-13 19:46:13,534 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:13,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:13,535 INFO L82 PathProgramCache]: Analyzing trace with hash -2098001932, now seen corresponding path program 46 times [2021-07-13 19:46:13,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:13,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466556242] [2021-07-13 19:46:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:13,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:13,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466556242] [2021-07-13 19:46:13,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466556242] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:13,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:13,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:46:13,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693075687] [2021-07-13 19:46:13,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:46:13,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:13,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:46:13,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:46:13,637 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) [2021-07-13 19:46:13,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:13,792 INFO L93 Difference]: Finished difference Result 2667 states and 6235 transitions. [2021-07-13 19:46:13,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 19:46:13,793 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 [2021-07-13 19:46:13,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:13,795 INFO L225 Difference]: With dead ends: 2667 [2021-07-13 19:46:13,795 INFO L226 Difference]: Without dead ends: 1870 [2021-07-13 19:46:13,796 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 122.3ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-13 19:46:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2021-07-13 19:46:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1786. [2021-07-13 19:46:13,815 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) [2021-07-13 19:46:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 4134 transitions. [2021-07-13 19:46:13,817 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 4134 transitions. Word has length 48 [2021-07-13 19:46:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:13,817 INFO L482 AbstractCegarLoop]: Abstraction has 1786 states and 4134 transitions. [2021-07-13 19:46:13,817 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) [2021-07-13 19:46:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 4134 transitions. [2021-07-13 19:46:13,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:13,819 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:13,819 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] [2021-07-13 19:46:13,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-13 19:46:13,819 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:13,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:13,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1787987210, now seen corresponding path program 47 times [2021-07-13 19:46:13,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:13,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748233671] [2021-07-13 19:46:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:13,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:13,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748233671] [2021-07-13 19:46:13,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748233671] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:13,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:13,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:46:13,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633937787] [2021-07-13 19:46:13,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 19:46:13,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:13,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 19:46:13,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:46:13,883 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) [2021-07-13 19:46:13,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:13,990 INFO L93 Difference]: Finished difference Result 1844 states and 4248 transitions. [2021-07-13 19:46:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 19:46:13,991 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 [2021-07-13 19:46:13,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:13,993 INFO L225 Difference]: With dead ends: 1844 [2021-07-13 19:46:13,993 INFO L226 Difference]: Without dead ends: 1744 [2021-07-13 19:46:13,993 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:46:14,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2021-07-13 19:46:14,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1744. [2021-07-13 19:46:14,017 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) [2021-07-13 19:46:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 4030 transitions. [2021-07-13 19:46:14,020 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 4030 transitions. Word has length 48 [2021-07-13 19:46:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:14,020 INFO L482 AbstractCegarLoop]: Abstraction has 1744 states and 4030 transitions. [2021-07-13 19:46:14,020 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) [2021-07-13 19:46:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 4030 transitions. [2021-07-13 19:46:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:14,022 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:14,022 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] [2021-07-13 19:46:14,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-13 19:46:14,022 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:14,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:14,022 INFO L82 PathProgramCache]: Analyzing trace with hash 668037194, now seen corresponding path program 48 times [2021-07-13 19:46:14,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:14,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25964883] [2021-07-13 19:46:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:14,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:14,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25964883] [2021-07-13 19:46:14,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25964883] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:14,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:14,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 19:46:14,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241987689] [2021-07-13 19:46:14,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 19:46:14,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:14,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 19:46:14,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:46:14,089 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) [2021-07-13 19:46:14,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:14,181 INFO L93 Difference]: Finished difference Result 1840 states and 4234 transitions. [2021-07-13 19:46:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 19:46:14,182 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 [2021-07-13 19:46:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:14,184 INFO L225 Difference]: With dead ends: 1840 [2021-07-13 19:46:14,184 INFO L226 Difference]: Without dead ends: 1729 [2021-07-13 19:46:14,184 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-13 19:46:14,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-07-13 19:46:14,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1609. [2021-07-13 19:46:14,207 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) [2021-07-13 19:46:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 3694 transitions. [2021-07-13 19:46:14,210 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 3694 transitions. Word has length 48 [2021-07-13 19:46:14,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:14,210 INFO L482 AbstractCegarLoop]: Abstraction has 1609 states and 3694 transitions. [2021-07-13 19:46:14,210 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) [2021-07-13 19:46:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 3694 transitions. [2021-07-13 19:46:14,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:14,212 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:14,212 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] [2021-07-13 19:46:14,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-13 19:46:14,212 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:14,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:14,212 INFO L82 PathProgramCache]: Analyzing trace with hash -641387982, now seen corresponding path program 49 times [2021-07-13 19:46:14,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:14,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160696955] [2021-07-13 19:46:14,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:14,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:14,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:14,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160696955] [2021-07-13 19:46:14,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160696955] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:14,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:14,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 19:46:14,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296521521] [2021-07-13 19:46:14,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 19:46:14,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:14,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 19:46:14,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-13 19:46:14,282 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) [2021-07-13 19:46:14,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:14,396 INFO L93 Difference]: Finished difference Result 1615 states and 3635 transitions. [2021-07-13 19:46:14,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 19:46:14,396 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 [2021-07-13 19:46:14,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:14,398 INFO L225 Difference]: With dead ends: 1615 [2021-07-13 19:46:14,398 INFO L226 Difference]: Without dead ends: 1329 [2021-07-13 19:46:14,399 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:14,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-07-13 19:46:14,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1329. [2021-07-13 19:46:14,415 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) [2021-07-13 19:46:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 2982 transitions. [2021-07-13 19:46:14,417 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 2982 transitions. Word has length 48 [2021-07-13 19:46:14,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:14,418 INFO L482 AbstractCegarLoop]: Abstraction has 1329 states and 2982 transitions. [2021-07-13 19:46:14,418 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) [2021-07-13 19:46:14,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 2982 transitions. [2021-07-13 19:46:14,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:14,419 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:14,419 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] [2021-07-13 19:46:14,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-13 19:46:14,420 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:14,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:14,421 INFO L82 PathProgramCache]: Analyzing trace with hash 534813022, now seen corresponding path program 50 times [2021-07-13 19:46:14,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:14,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078277573] [2021-07-13 19:46:14,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:14,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:14,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078277573] [2021-07-13 19:46:14,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078277573] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:14,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:14,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 19:46:14,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645968100] [2021-07-13 19:46:14,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 19:46:14,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:14,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 19:46:14,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-07-13 19:46:14,513 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) [2021-07-13 19:46:14,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:14,763 INFO L93 Difference]: Finished difference Result 1101 states and 2424 transitions. [2021-07-13 19:46:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 19:46:14,764 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 [2021-07-13 19:46:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:14,765 INFO L225 Difference]: With dead ends: 1101 [2021-07-13 19:46:14,765 INFO L226 Difference]: Without dead ends: 529 [2021-07-13 19:46:14,765 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 145.7ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-07-13 19:46:14,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-07-13 19:46:14,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 336. [2021-07-13 19:46:14,770 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) [2021-07-13 19:46:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 706 transitions. [2021-07-13 19:46:14,770 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 706 transitions. Word has length 48 [2021-07-13 19:46:14,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:14,770 INFO L482 AbstractCegarLoop]: Abstraction has 336 states and 706 transitions. [2021-07-13 19:46:14,771 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) [2021-07-13 19:46:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 706 transitions. [2021-07-13 19:46:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 19:46:14,771 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:46:14,771 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] [2021-07-13 19:46:14,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-07-13 19:46:14,772 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:46:14,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:46:14,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1680723400, now seen corresponding path program 51 times [2021-07-13 19:46:14,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:46:14,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019723848] [2021-07-13 19:46:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:46:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:46:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:46:14,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:46:14,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019723848] [2021-07-13 19:46:14,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019723848] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:46:14,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:46:14,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 19:46:14,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830111285] [2021-07-13 19:46:14,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 19:46:14,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:46:14,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 19:46:14,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-07-13 19:46:14,860 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) [2021-07-13 19:46:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:46:14,987 INFO L93 Difference]: Finished difference Result 284 states and 592 transitions. [2021-07-13 19:46:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 19:46:14,988 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 [2021-07-13 19:46:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:46:14,988 INFO L225 Difference]: With dead ends: 284 [2021-07-13 19:46:14,988 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 19:46:14,988 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-07-13 19:46:14,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 19:46:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 19:46:14,988 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) [2021-07-13 19:46:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 19:46:14,989 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-07-13 19:46:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:46:14,989 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 19:46:14,989 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) [2021-07-13 19:46:14,989 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 19:46:14,989 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 19:46:14,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-07-13 19:46:14,991 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 19:46:14,992 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 07:46:14 BasicIcfg [2021-07-13 19:46:14,992 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 19:46:14,993 INFO L168 Benchmark]: Toolchain (without parser) took 26484.02 ms. Allocated memory was 183.5 MB in the beginning and 1.1 GB in the end (delta: 907.0 MB). Free memory was 163.4 MB in the beginning and 621.0 MB in the end (delta: -457.7 MB). Peak memory consumption was 450.4 MB. Max. memory is 8.0 GB. [2021-07-13 19:46:14,993 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory is still 164.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:46:14,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.15 ms. Allocated memory is still 183.5 MB. Free memory was 163.2 MB in the beginning and 161.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 19:46:14,993 INFO L168 Benchmark]: Boogie Preprocessor took 19.38 ms. Allocated memory is still 183.5 MB. Free memory was 161.6 MB in the beginning and 160.8 MB in the end (delta: 863.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:46:14,993 INFO L168 Benchmark]: RCFGBuilder took 288.64 ms. Allocated memory is still 183.5 MB. Free memory was 160.6 MB in the beginning and 146.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-13 19:46:14,993 INFO L168 Benchmark]: TraceAbstraction took 26143.62 ms. Allocated memory was 183.5 MB in the beginning and 1.1 GB in the end (delta: 907.0 MB). Free memory was 146.2 MB in the beginning and 621.0 MB in the end (delta: -474.8 MB). Peak memory consumption was 433.7 MB. Max. memory is 8.0 GB. [2021-07-13 19:46:14,993 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory is still 164.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.15 ms. Allocated memory is still 183.5 MB. Free memory was 163.2 MB in the beginning and 161.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.38 ms. Allocated memory is still 183.5 MB. Free memory was 161.6 MB in the beginning and 160.8 MB in the end (delta: 863.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 288.64 ms. Allocated memory is still 183.5 MB. Free memory was 160.6 MB in the beginning and 146.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 26143.62 ms. Allocated memory was 183.5 MB in the beginning and 1.1 GB in the end (delta: 907.0 MB). Free memory was 146.2 MB in the beginning and 621.0 MB in the end (delta: -474.8 MB). Peak memory consumption was 433.7 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: 26060.0ms, OverallIterations: 51, TraceHistogramMax: 1, EmptinessCheckTime: 385.7ms, AutomataDifference: 13694.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 207.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5433 SDtfs, 9853 SDslu, 20511 SDs, 0 SdLazy, 13096 SolverSat, 2428 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6724.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 687 GetRequests, 84 SyntacticMatches, 33 SemanticMatches, 570 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 6560.1ms 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: 5789.5ms AutomataMinimizationTime, 51 MinimizatonAttempts, 81834 StatesRemovedByMinimization, 47 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 70.2ms SsaConstructionTime, 336.3ms SatisfiabilityAnalysisTime, 5245.4ms 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...