/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 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 20:24:11,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 20:24:11,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 20:24:11,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 20:24:11,854 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 [2021-06-12 20:24:11,874 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 20:24:11,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 20:24:11,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 20:24:11,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 20:24:11,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 20:24:11,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 20:24:11,876 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 20:24:11,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 20:24:11,876 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 20:24:11,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 20:24:11,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 20:24:11,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 20:24:11,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 20:24:11,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 20:24:11,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 20:24:11,877 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 20:24:11,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 20:24:11,878 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 20:24:11,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 20:24:11,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 20:24:11,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 20:24:11,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 20:24:11,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 20:24:11,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 20:24:11,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 20:24:11,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 20:24:11,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 20:24:11,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 20:24:11,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 20:24:11,879 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 20:24:11,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 20:24:11,880 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 20:24:12,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 20:24:12,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 20:24:12,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 20:24:12,141 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-12 20:24:12,142 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-12 20:24:12,143 INFO L432 ainManager$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 [2021-06-12 20:24:12,143 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-06-12 20:24:12,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 20:24:12,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-12 20:24:12,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 20:24:12,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 20:24:12,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 20:24:12,191 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 12.06 08:24:12" (1/1) ... [2021-06-12 20:24:12,199 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 12.06 08:24:12" (1/1) ... [2021-06-12 20:24:12,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 20:24:12,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 20:24:12,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 20:24:12,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 20:24:12,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:24:12" (1/1) ... [2021-06-12 20:24:12,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:24:12" (1/1) ... [2021-06-12 20:24:12,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:24:12" (1/1) ... [2021-06-12 20:24:12,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:24:12" (1/1) ... [2021-06-12 20:24:12,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:24:12" (1/1) ... [2021-06-12 20:24:12,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:24:12" (1/1) ... [2021-06-12 20:24:12,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:24:12" (1/1) ... [2021-06-12 20:24:12,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 20:24:12,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 20:24:12,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 20:24:12,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 20:24:12,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:24:12" (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 [2021-06-12 20:24:12,294 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-12 20:24:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-12 20:24:12,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-12 20:24:12,294 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-12 20:24:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-12 20:24:12,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-12 20:24:12,296 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-12 20:24:12,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 20:24:12,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 20:24:12,296 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-12 20:24:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-12 20:24:12,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-12 20:24:12,299 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 20:24:12,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 20:24:12,490 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-12 20:24:12,491 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 08:24:12 BoogieIcfgContainer [2021-06-12 20:24:12,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 20:24:12,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 20:24:12,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 20:24:12,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 20:24:12,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 08:24:12" (1/2) ... [2021-06-12 20:24:12,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8e5854 and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 08:24:12, skipping insertion in model container [2021-06-12 20:24:12,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 08:24:12" (2/2) ... [2021-06-12 20:24:12,507 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-06-12 20:24:12,511 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 20:24:12,511 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 20:24:12,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 20:24:12,512 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 20:24:12,603 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-12 20:24:12,622 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 20:24:12,638 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 20:24:12,638 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 20:24:12,638 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 20:24:12,638 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 20:24:12,638 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 20:24:12,638 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 20:24:12,639 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 20:24:12,639 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 20:24:12,647 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 53 transitions, 130 flow [2021-06-12 20:24:12,838 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:12,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:12,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:12,879 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:12,881 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:12,881 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:12,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:12,890 INFO L82 PathProgramCache]: Analyzing trace with hash 21714732, now seen corresponding path program 1 times [2021-06-12 20:24:12,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:12,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049268031] [2021-06-12 20:24:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:13,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:13,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049268031] [2021-06-12 20:24:13,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049268031] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:13,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:13,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:24:13,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24162235] [2021-06-12 20:24:13,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:24:13,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:13,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:24:13,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:13,334 INFO L87 Difference]: Start difference. First operand has 3171 states, 3169 states have (on average 2.7847901546229092) internal successors, (8825), 3170 states have internal predecessors, (8825), 0 states have call successors, (0), 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) [2021-06-12 20:24:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:13,846 INFO L93 Difference]: Finished difference Result 5296 states and 14750 transitions. [2021-06-12 20:24:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:24:13,848 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 [2021-06-12 20:24:13,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:13,891 INFO L225 Difference]: With dead ends: 5296 [2021-06-12 20:24:13,891 INFO L226 Difference]: Without dead ends: 5296 [2021-06-12 20:24:13,892 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 191.2ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-06-12 20:24:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5296 states. [2021-06-12 20:24:14,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5296 to 4137. [2021-06-12 20:24:14,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4137 states, 4136 states have (on average 2.775386847195358) internal successors, (11479), 4136 states have internal predecessors, (11479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 11479 transitions. [2021-06-12 20:24:14,124 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 11479 transitions. Word has length 48 [2021-06-12 20:24:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:14,124 INFO L482 AbstractCegarLoop]: Abstraction has 4137 states and 11479 transitions. [2021-06-12 20:24:14,125 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) [2021-06-12 20:24:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 11479 transitions. [2021-06-12 20:24:14,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:14,136 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:14,136 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:14,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 20:24:14,138 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:14,141 INFO L82 PathProgramCache]: Analyzing trace with hash -766310718, now seen corresponding path program 2 times [2021-06-12 20:24:14,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:14,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093748424] [2021-06-12 20:24:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:14,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:14,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093748424] [2021-06-12 20:24:14,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093748424] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:14,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:14,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:24:14,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80432489] [2021-06-12 20:24:14,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:24:14,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:14,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:24:14,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:14,420 INFO L87 Difference]: Start difference. First operand 4137 states and 11479 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) [2021-06-12 20:24:14,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:14,632 INFO L93 Difference]: Finished difference Result 5296 states and 14222 transitions. [2021-06-12 20:24:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 20:24:14,633 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 [2021-06-12 20:24:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:14,654 INFO L225 Difference]: With dead ends: 5296 [2021-06-12 20:24:14,655 INFO L226 Difference]: Without dead ends: 5103 [2021-06-12 20:24:14,656 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 153.9ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:24:14,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5103 states. [2021-06-12 20:24:14,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5103 to 4184. [2021-06-12 20:24:14,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4184 states, 4183 states have (on average 2.764044943820225) internal successors, (11562), 4183 states have internal predecessors, (11562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 11562 transitions. [2021-06-12 20:24:14,825 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 11562 transitions. Word has length 48 [2021-06-12 20:24:14,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:14,826 INFO L482 AbstractCegarLoop]: Abstraction has 4184 states and 11562 transitions. [2021-06-12 20:24:14,827 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) [2021-06-12 20:24:14,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 11562 transitions. [2021-06-12 20:24:14,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:14,862 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:14,862 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:14,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 20:24:14,863 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:14,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:14,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1921632898, now seen corresponding path program 3 times [2021-06-12 20:24:14,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:14,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781653124] [2021-06-12 20:24:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:15,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:15,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781653124] [2021-06-12 20:24:15,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781653124] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:15,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:15,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-12 20:24:15,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662023330] [2021-06-12 20:24:15,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 20:24:15,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:15,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 20:24:15,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-06-12 20:24:15,068 INFO L87 Difference]: Start difference. First operand 4184 states and 11562 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) [2021-06-12 20:24:15,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:15,553 INFO L93 Difference]: Finished difference Result 6610 states and 17999 transitions. [2021-06-12 20:24:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-12 20:24:15,554 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 [2021-06-12 20:24:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:15,579 INFO L225 Difference]: With dead ends: 6610 [2021-06-12 20:24:15,579 INFO L226 Difference]: Without dead ends: 6580 [2021-06-12 20:24:15,579 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 149.5ms TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-06-12 20:24:15,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2021-06-12 20:24:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 4689. [2021-06-12 20:24:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4688 states have (on average 2.7361348122866893) internal successors, (12827), 4688 states have internal predecessors, (12827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 12827 transitions. [2021-06-12 20:24:15,724 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 12827 transitions. Word has length 48 [2021-06-12 20:24:15,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:15,725 INFO L482 AbstractCegarLoop]: Abstraction has 4689 states and 12827 transitions. [2021-06-12 20:24:15,725 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) [2021-06-12 20:24:15,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 12827 transitions. [2021-06-12 20:24:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:15,733 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:15,734 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:15,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 20:24:15,734 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:15,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:15,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1315335104, now seen corresponding path program 4 times [2021-06-12 20:24:15,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:15,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126652891] [2021-06-12 20:24:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:15,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:15,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126652891] [2021-06-12 20:24:15,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126652891] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:15,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:15,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-12 20:24:15,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594048899] [2021-06-12 20:24:15,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 20:24:15,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:15,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 20:24:15,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-06-12 20:24:15,903 INFO L87 Difference]: Start difference. First operand 4689 states and 12827 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) [2021-06-12 20:24:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:16,353 INFO L93 Difference]: Finished difference Result 6721 states and 18256 transitions. [2021-06-12 20:24:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:24:16,353 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 [2021-06-12 20:24:16,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:16,379 INFO L225 Difference]: With dead ends: 6721 [2021-06-12 20:24:16,380 INFO L226 Difference]: Without dead ends: 6721 [2021-06-12 20:24:16,381 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 166.7ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:24:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2021-06-12 20:24:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 4488. [2021-06-12 20:24:16,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 2.74793848896813) internal successors, (12330), 4487 states have internal predecessors, (12330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 12330 transitions. [2021-06-12 20:24:16,533 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 12330 transitions. Word has length 48 [2021-06-12 20:24:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:16,533 INFO L482 AbstractCegarLoop]: Abstraction has 4488 states and 12330 transitions. [2021-06-12 20:24:16,534 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) [2021-06-12 20:24:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 12330 transitions. [2021-06-12 20:24:16,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:16,543 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:16,543 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:16,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 20:24:16,543 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:16,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1820845956, now seen corresponding path program 5 times [2021-06-12 20:24:16,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:16,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661563595] [2021-06-12 20:24:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:16,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:16,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661563595] [2021-06-12 20:24:16,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661563595] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:16,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:16,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:24:16,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126833903] [2021-06-12 20:24:16,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:24:16,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:16,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:24:16,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:16,656 INFO L87 Difference]: Start difference. First operand 4488 states and 12330 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) [2021-06-12 20:24:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:16,844 INFO L93 Difference]: Finished difference Result 5641 states and 15049 transitions. [2021-06-12 20:24:16,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 20:24:16,844 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 [2021-06-12 20:24:16,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:16,855 INFO L225 Difference]: With dead ends: 5641 [2021-06-12 20:24:16,855 INFO L226 Difference]: Without dead ends: 5161 [2021-06-12 20:24:16,856 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 131.7ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:24:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5161 states. [2021-06-12 20:24:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5161 to 4243. [2021-06-12 20:24:16,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4243 states, 4242 states have (on average 2.747053276756247) internal successors, (11653), 4242 states have internal predecessors, (11653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 11653 transitions. [2021-06-12 20:24:16,995 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 11653 transitions. Word has length 48 [2021-06-12 20:24:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:16,997 INFO L482 AbstractCegarLoop]: Abstraction has 4243 states and 11653 transitions. [2021-06-12 20:24:16,997 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) [2021-06-12 20:24:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 11653 transitions. [2021-06-12 20:24:17,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:17,006 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:17,007 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:17,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 20:24:17,007 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:17,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:17,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1271126176, now seen corresponding path program 6 times [2021-06-12 20:24:17,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:17,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685524802] [2021-06-12 20:24:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:17,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:17,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685524802] [2021-06-12 20:24:17,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685524802] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:17,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:17,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 20:24:17,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506596654] [2021-06-12 20:24:17,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 20:24:17,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:17,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 20:24:17,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 20:24:17,052 INFO L87 Difference]: Start difference. First operand 4243 states and 11653 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) [2021-06-12 20:24:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:17,073 INFO L93 Difference]: Finished difference Result 4195 states and 11359 transitions. [2021-06-12 20:24:17,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 20:24:17,073 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 [2021-06-12 20:24:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:17,081 INFO L225 Difference]: With dead ends: 4195 [2021-06-12 20:24:17,081 INFO L226 Difference]: Without dead ends: 4183 [2021-06-12 20:24:17,081 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 20:24:17,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2021-06-12 20:24:17,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 4183. [2021-06-12 20:24:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4183 states, 4182 states have (on average 2.7082735533237687) internal successors, (11326), 4182 states have internal predecessors, (11326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:17,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4183 states to 4183 states and 11326 transitions. [2021-06-12 20:24:17,210 INFO L78 Accepts]: Start accepts. Automaton has 4183 states and 11326 transitions. Word has length 48 [2021-06-12 20:24:17,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:17,210 INFO L482 AbstractCegarLoop]: Abstraction has 4183 states and 11326 transitions. [2021-06-12 20:24:17,210 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) [2021-06-12 20:24:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4183 states and 11326 transitions. [2021-06-12 20:24:17,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:17,221 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:17,221 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:17,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 20:24:17,222 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:17,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:17,222 INFO L82 PathProgramCache]: Analyzing trace with hash -3563124, now seen corresponding path program 7 times [2021-06-12 20:24:17,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:17,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227409604] [2021-06-12 20:24:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:17,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:17,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227409604] [2021-06-12 20:24:17,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227409604] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:17,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:17,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:24:17,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424648652] [2021-06-12 20:24:17,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:24:17,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:17,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:24:17,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:17,348 INFO L87 Difference]: Start difference. First operand 4183 states and 11326 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) [2021-06-12 20:24:17,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:17,567 INFO L93 Difference]: Finished difference Result 5052 states and 13458 transitions. [2021-06-12 20:24:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:24:17,568 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 [2021-06-12 20:24:17,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:17,577 INFO L225 Difference]: With dead ends: 5052 [2021-06-12 20:24:17,577 INFO L226 Difference]: Without dead ends: 4789 [2021-06-12 20:24:17,578 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 57.3ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:17,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4789 states. [2021-06-12 20:24:17,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4789 to 4195. [2021-06-12 20:24:17,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4195 states, 4194 states have (on average 2.7067238912732474) internal successors, (11352), 4194 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4195 states to 4195 states and 11352 transitions. [2021-06-12 20:24:17,709 INFO L78 Accepts]: Start accepts. Automaton has 4195 states and 11352 transitions. Word has length 48 [2021-06-12 20:24:17,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:17,710 INFO L482 AbstractCegarLoop]: Abstraction has 4195 states and 11352 transitions. [2021-06-12 20:24:17,710 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) [2021-06-12 20:24:17,710 INFO L276 IsEmpty]: Start isEmpty. Operand 4195 states and 11352 transitions. [2021-06-12 20:24:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:17,717 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:17,717 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:17,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 20:24:17,718 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:17,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:17,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1394699670, now seen corresponding path program 8 times [2021-06-12 20:24:17,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:17,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999570607] [2021-06-12 20:24:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:17,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:17,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999570607] [2021-06-12 20:24:17,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999570607] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:17,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:17,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 20:24:17,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423816772] [2021-06-12 20:24:17,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 20:24:17,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:17,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 20:24:17,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 20:24:17,736 INFO L87 Difference]: Start difference. First operand 4195 states and 11352 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) [2021-06-12 20:24:17,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:17,753 INFO L93 Difference]: Finished difference Result 4135 states and 10948 transitions. [2021-06-12 20:24:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 20:24:17,754 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 [2021-06-12 20:24:17,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:17,761 INFO L225 Difference]: With dead ends: 4135 [2021-06-12 20:24:17,761 INFO L226 Difference]: Without dead ends: 4135 [2021-06-12 20:24:17,761 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 20:24:17,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2021-06-12 20:24:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 4069. [2021-06-12 20:24:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 4068 states have (on average 2.652409046214356) internal successors, (10790), 4068 states have internal predecessors, (10790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:17,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 10790 transitions. [2021-06-12 20:24:17,854 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 10790 transitions. Word has length 48 [2021-06-12 20:24:17,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:17,854 INFO L482 AbstractCegarLoop]: Abstraction has 4069 states and 10790 transitions. [2021-06-12 20:24:17,855 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) [2021-06-12 20:24:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 10790 transitions. [2021-06-12 20:24:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:17,866 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:17,866 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:17,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-12 20:24:17,866 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:17,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:17,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1269490762, now seen corresponding path program 9 times [2021-06-12 20:24:17,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:17,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240211910] [2021-06-12 20:24:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:18,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:18,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240211910] [2021-06-12 20:24:18,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240211910] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:18,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:18,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-12 20:24:18,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503951109] [2021-06-12 20:24:18,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 20:24:18,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:18,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 20:24:18,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-06-12 20:24:18,027 INFO L87 Difference]: Start difference. First operand 4069 states and 10790 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) [2021-06-12 20:24:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:18,482 INFO L93 Difference]: Finished difference Result 5461 states and 14265 transitions. [2021-06-12 20:24:18,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-12 20:24:18,482 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 [2021-06-12 20:24:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:18,493 INFO L225 Difference]: With dead ends: 5461 [2021-06-12 20:24:18,493 INFO L226 Difference]: Without dead ends: 4771 [2021-06-12 20:24:18,493 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 203.5ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-06-12 20:24:18,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2021-06-12 20:24:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4096. [2021-06-12 20:24:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4096 states, 4095 states have (on average 2.645177045177045) internal successors, (10832), 4095 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 10832 transitions. [2021-06-12 20:24:18,604 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 10832 transitions. Word has length 48 [2021-06-12 20:24:18,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:18,605 INFO L482 AbstractCegarLoop]: Abstraction has 4096 states and 10832 transitions. [2021-06-12 20:24:18,605 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) [2021-06-12 20:24:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 10832 transitions. [2021-06-12 20:24:18,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:18,611 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:18,612 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:18,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-12 20:24:18,612 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:18,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:18,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1813768894, now seen corresponding path program 10 times [2021-06-12 20:24:18,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:18,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968412236] [2021-06-12 20:24:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:18,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:18,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968412236] [2021-06-12 20:24:18,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968412236] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:18,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:18,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:24:18,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449320674] [2021-06-12 20:24:18,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:24:18,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:18,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:24:18,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:18,745 INFO L87 Difference]: Start difference. First operand 4096 states and 10832 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) [2021-06-12 20:24:19,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:19,043 INFO L93 Difference]: Finished difference Result 9053 states and 24158 transitions. [2021-06-12 20:24:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 20:24:19,043 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 [2021-06-12 20:24:19,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:19,062 INFO L225 Difference]: With dead ends: 9053 [2021-06-12 20:24:19,062 INFO L226 Difference]: Without dead ends: 9017 [2021-06-12 20:24:19,063 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 155.2ms TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:24:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9017 states. [2021-06-12 20:24:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9017 to 4681. [2021-06-12 20:24:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4681 states, 4680 states have (on average 2.6534188034188033) internal successors, (12418), 4680 states have internal predecessors, (12418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4681 states to 4681 states and 12418 transitions. [2021-06-12 20:24:19,201 INFO L78 Accepts]: Start accepts. Automaton has 4681 states and 12418 transitions. Word has length 48 [2021-06-12 20:24:19,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:19,201 INFO L482 AbstractCegarLoop]: Abstraction has 4681 states and 12418 transitions. [2021-06-12 20:24:19,202 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) [2021-06-12 20:24:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4681 states and 12418 transitions. [2021-06-12 20:24:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:19,209 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:19,209 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:19,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-12 20:24:19,210 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:19,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:19,210 INFO L82 PathProgramCache]: Analyzing trace with hash -962288318, now seen corresponding path program 11 times [2021-06-12 20:24:19,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:19,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029188123] [2021-06-12 20:24:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:19,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:19,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:19,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029188123] [2021-06-12 20:24:19,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029188123] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:19,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:19,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:24:19,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457216707] [2021-06-12 20:24:19,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:24:19,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:19,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:24:19,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:19,379 INFO L87 Difference]: Start difference. First operand 4681 states and 12418 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) [2021-06-12 20:24:19,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:19,733 INFO L93 Difference]: Finished difference Result 9244 states and 24561 transitions. [2021-06-12 20:24:19,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-12 20:24:19,734 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 [2021-06-12 20:24:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:19,748 INFO L225 Difference]: With dead ends: 9244 [2021-06-12 20:24:19,748 INFO L226 Difference]: Without dead ends: 8817 [2021-06-12 20:24:19,749 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 237.0ms TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2021-06-12 20:24:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8817 states. [2021-06-12 20:24:19,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8817 to 4796. [2021-06-12 20:24:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 4795 states have (on average 2.6498435870698644) internal successors, (12706), 4795 states have internal predecessors, (12706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 12706 transitions. [2021-06-12 20:24:19,887 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 12706 transitions. Word has length 48 [2021-06-12 20:24:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:19,887 INFO L482 AbstractCegarLoop]: Abstraction has 4796 states and 12706 transitions. [2021-06-12 20:24:19,888 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) [2021-06-12 20:24:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 12706 transitions. [2021-06-12 20:24:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:19,895 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:19,896 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:19,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-12 20:24:19,896 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:19,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:19,896 INFO L82 PathProgramCache]: Analyzing trace with hash -533010174, now seen corresponding path program 12 times [2021-06-12 20:24:19,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:19,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562293724] [2021-06-12 20:24:19,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:20,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:20,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562293724] [2021-06-12 20:24:20,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562293724] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:20,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:20,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:24:20,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14982598] [2021-06-12 20:24:20,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:24:20,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:20,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:24:20,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:20,047 INFO L87 Difference]: Start difference. First operand 4796 states and 12706 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) [2021-06-12 20:24:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:20,498 INFO L93 Difference]: Finished difference Result 7965 states and 21204 transitions. [2021-06-12 20:24:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 20:24:20,499 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 [2021-06-12 20:24:20,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:20,512 INFO L225 Difference]: With dead ends: 7965 [2021-06-12 20:24:20,512 INFO L226 Difference]: Without dead ends: 7909 [2021-06-12 20:24:20,512 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 227.8ms TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2021-06-12 20:24:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7909 states. [2021-06-12 20:24:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7909 to 5186. [2021-06-12 20:24:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5186 states, 5185 states have (on average 2.654194792671167) internal successors, (13762), 5185 states have internal predecessors, (13762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 13762 transitions. [2021-06-12 20:24:20,669 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 13762 transitions. Word has length 48 [2021-06-12 20:24:20,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:20,669 INFO L482 AbstractCegarLoop]: Abstraction has 5186 states and 13762 transitions. [2021-06-12 20:24:20,669 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) [2021-06-12 20:24:20,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 13762 transitions. [2021-06-12 20:24:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:20,678 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:20,678 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:20,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-12 20:24:20,678 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:20,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:20,679 INFO L82 PathProgramCache]: Analyzing trace with hash 524989120, now seen corresponding path program 13 times [2021-06-12 20:24:20,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:20,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980972406] [2021-06-12 20:24:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:20,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:20,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980972406] [2021-06-12 20:24:20,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980972406] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:20,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:20,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:24:20,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460436198] [2021-06-12 20:24:20,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:24:20,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:20,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:24:20,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:20,804 INFO L87 Difference]: Start difference. First operand 5186 states and 13762 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) [2021-06-12 20:24:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:21,445 INFO L93 Difference]: Finished difference Result 10903 states and 28427 transitions. [2021-06-12 20:24:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-12 20:24:21,445 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 [2021-06-12 20:24:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:21,459 INFO L225 Difference]: With dead ends: 10903 [2021-06-12 20:24:21,459 INFO L226 Difference]: Without dead ends: 10608 [2021-06-12 20:24:21,460 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 274.7ms TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-06-12 20:24:21,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10608 states. [2021-06-12 20:24:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10608 to 5363. [2021-06-12 20:24:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5363 states, 5362 states have (on average 2.6503170458784036) internal successors, (14211), 5362 states have internal predecessors, (14211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:21,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5363 states to 5363 states and 14211 transitions. [2021-06-12 20:24:21,636 INFO L78 Accepts]: Start accepts. Automaton has 5363 states and 14211 transitions. Word has length 48 [2021-06-12 20:24:21,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:21,636 INFO L482 AbstractCegarLoop]: Abstraction has 5363 states and 14211 transitions. [2021-06-12 20:24:21,636 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) [2021-06-12 20:24:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5363 states and 14211 transitions. [2021-06-12 20:24:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:21,645 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:21,645 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:21,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-12 20:24:21,646 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:21,646 INFO L82 PathProgramCache]: Analyzing trace with hash -100097542, now seen corresponding path program 14 times [2021-06-12 20:24:21,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:21,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802082552] [2021-06-12 20:24:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:21,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:21,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802082552] [2021-06-12 20:24:21,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802082552] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:21,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:21,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-12 20:24:21,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200894799] [2021-06-12 20:24:21,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 20:24:21,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:21,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 20:24:21,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:24:21,764 INFO L87 Difference]: Start difference. First operand 5363 states and 14211 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) [2021-06-12 20:24:22,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:22,078 INFO L93 Difference]: Finished difference Result 8019 states and 20949 transitions. [2021-06-12 20:24:22,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-12 20:24:22,078 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 [2021-06-12 20:24:22,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:22,085 INFO L225 Difference]: With dead ends: 8019 [2021-06-12 20:24:22,085 INFO L226 Difference]: Without dead ends: 7736 [2021-06-12 20:24:22,086 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 138.4ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-06-12 20:24:22,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7736 states. [2021-06-12 20:24:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7736 to 5972. [2021-06-12 20:24:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5972 states, 5971 states have (on average 2.6394238820968012) internal successors, (15760), 5971 states have internal predecessors, (15760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5972 states to 5972 states and 15760 transitions. [2021-06-12 20:24:22,215 INFO L78 Accepts]: Start accepts. Automaton has 5972 states and 15760 transitions. Word has length 48 [2021-06-12 20:24:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:22,216 INFO L482 AbstractCegarLoop]: Abstraction has 5972 states and 15760 transitions. [2021-06-12 20:24:22,216 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) [2021-06-12 20:24:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5972 states and 15760 transitions. [2021-06-12 20:24:22,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:22,224 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:22,224 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:22,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-12 20:24:22,224 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:22,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:22,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1261941154, now seen corresponding path program 15 times [2021-06-12 20:24:22,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:22,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410498855] [2021-06-12 20:24:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:22,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:22,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410498855] [2021-06-12 20:24:22,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410498855] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:22,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:22,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:24:22,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162172410] [2021-06-12 20:24:22,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:24:22,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:22,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:24:22,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:22,305 INFO L87 Difference]: Start difference. First operand 5972 states and 15760 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) [2021-06-12 20:24:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:22,654 INFO L93 Difference]: Finished difference Result 6943 states and 18034 transitions. [2021-06-12 20:24:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 20:24:22,655 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 [2021-06-12 20:24:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:22,662 INFO L225 Difference]: With dead ends: 6943 [2021-06-12 20:24:22,662 INFO L226 Difference]: Without dead ends: 6391 [2021-06-12 20:24:22,663 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 142.4ms TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:24:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2021-06-12 20:24:22,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 4834. [2021-06-12 20:24:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4834 states, 4833 states have (on average 2.5923856817711566) internal successors, (12529), 4833 states have internal predecessors, (12529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 12529 transitions. [2021-06-12 20:24:22,765 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 12529 transitions. Word has length 48 [2021-06-12 20:24:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:22,766 INFO L482 AbstractCegarLoop]: Abstraction has 4834 states and 12529 transitions. [2021-06-12 20:24:22,766 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) [2021-06-12 20:24:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 12529 transitions. [2021-06-12 20:24:22,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:22,773 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:22,773 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:22,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-12 20:24:22,774 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:22,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1739586752, now seen corresponding path program 16 times [2021-06-12 20:24:22,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:22,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049865597] [2021-06-12 20:24:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:22,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:22,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049865597] [2021-06-12 20:24:22,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049865597] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:22,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:22,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:24:22,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444133006] [2021-06-12 20:24:22,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:24:22,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:22,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:24:22,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:22,877 INFO L87 Difference]: Start difference. First operand 4834 states and 12529 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) [2021-06-12 20:24:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:23,116 INFO L93 Difference]: Finished difference Result 7130 states and 18291 transitions. [2021-06-12 20:24:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-12 20:24:23,116 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 [2021-06-12 20:24:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:23,124 INFO L225 Difference]: With dead ends: 7130 [2021-06-12 20:24:23,125 INFO L226 Difference]: Without dead ends: 6976 [2021-06-12 20:24:23,125 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 111.0ms TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2021-06-12 20:24:23,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6976 states. [2021-06-12 20:24:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6976 to 4545. [2021-06-12 20:24:23,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4545 states, 4544 states have (on average 2.6047535211267605) internal successors, (11836), 4544 states have internal predecessors, (11836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4545 states to 4545 states and 11836 transitions. [2021-06-12 20:24:23,237 INFO L78 Accepts]: Start accepts. Automaton has 4545 states and 11836 transitions. Word has length 48 [2021-06-12 20:24:23,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:23,238 INFO L482 AbstractCegarLoop]: Abstraction has 4545 states and 11836 transitions. [2021-06-12 20:24:23,238 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) [2021-06-12 20:24:23,238 INFO L276 IsEmpty]: Start isEmpty. Operand 4545 states and 11836 transitions. [2021-06-12 20:24:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:23,244 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:23,244 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:23,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-12 20:24:23,244 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:23,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:23,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1515232300, now seen corresponding path program 17 times [2021-06-12 20:24:23,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:23,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000236372] [2021-06-12 20:24:23,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:23,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:23,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000236372] [2021-06-12 20:24:23,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000236372] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:23,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:23,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:24:23,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786617685] [2021-06-12 20:24:23,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:24:23,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:23,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:24:23,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:23,359 INFO L87 Difference]: Start difference. First operand 4545 states and 11836 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) [2021-06-12 20:24:23,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:23,606 INFO L93 Difference]: Finished difference Result 5020 states and 12910 transitions. [2021-06-12 20:24:23,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-12 20:24:23,607 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 [2021-06-12 20:24:23,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:23,612 INFO L225 Difference]: With dead ends: 5020 [2021-06-12 20:24:23,612 INFO L226 Difference]: Without dead ends: 4701 [2021-06-12 20:24:23,612 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 113.7ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-06-12 20:24:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2021-06-12 20:24:23,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 4400. [2021-06-12 20:24:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 2.613548533757672) internal successors, (11497), 4399 states have internal predecessors, (11497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 11497 transitions. [2021-06-12 20:24:23,686 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 11497 transitions. Word has length 48 [2021-06-12 20:24:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:23,687 INFO L482 AbstractCegarLoop]: Abstraction has 4400 states and 11497 transitions. [2021-06-12 20:24:23,687 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) [2021-06-12 20:24:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 11497 transitions. [2021-06-12 20:24:23,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:23,695 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:23,695 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:23,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-12 20:24:23,696 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:23,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:23,696 INFO L82 PathProgramCache]: Analyzing trace with hash 76293474, now seen corresponding path program 18 times [2021-06-12 20:24:23,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:23,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797122555] [2021-06-12 20:24:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:23,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:23,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797122555] [2021-06-12 20:24:23,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797122555] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:23,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:23,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 20:24:23,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457761847] [2021-06-12 20:24:23,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 20:24:23,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:23,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 20:24:23,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 20:24:23,727 INFO L87 Difference]: Start difference. First operand 4400 states and 11497 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) [2021-06-12 20:24:23,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:23,740 INFO L93 Difference]: Finished difference Result 4122 states and 10461 transitions. [2021-06-12 20:24:23,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 20:24:23,741 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 [2021-06-12 20:24:23,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:23,745 INFO L225 Difference]: With dead ends: 4122 [2021-06-12 20:24:23,745 INFO L226 Difference]: Without dead ends: 4122 [2021-06-12 20:24:23,745 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 20:24:23,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2021-06-12 20:24:23,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 4018. [2021-06-12 20:24:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4018 states, 4017 states have (on average 2.542942494398805) internal successors, (10215), 4017 states have internal predecessors, (10215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:23,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 10215 transitions. [2021-06-12 20:24:23,810 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 10215 transitions. Word has length 48 [2021-06-12 20:24:23,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:23,810 INFO L482 AbstractCegarLoop]: Abstraction has 4018 states and 10215 transitions. [2021-06-12 20:24:23,810 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) [2021-06-12 20:24:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 10215 transitions. [2021-06-12 20:24:23,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:23,815 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:23,815 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:23,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-12 20:24:23,815 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:23,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:23,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1673336162, now seen corresponding path program 19 times [2021-06-12 20:24:23,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:23,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112768655] [2021-06-12 20:24:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:23,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:23,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112768655] [2021-06-12 20:24:23,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112768655] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:23,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:23,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:24:23,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921080757] [2021-06-12 20:24:23,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:24:23,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:23,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:24:23,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:23,888 INFO L87 Difference]: Start difference. First operand 4018 states and 10215 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) [2021-06-12 20:24:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:24,025 INFO L93 Difference]: Finished difference Result 4580 states and 11474 transitions. [2021-06-12 20:24:24,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 20:24:24,025 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 [2021-06-12 20:24:24,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:24,029 INFO L225 Difference]: With dead ends: 4580 [2021-06-12 20:24:24,029 INFO L226 Difference]: Without dead ends: 4240 [2021-06-12 20:24:24,030 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 115.0ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:24:24,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4240 states. [2021-06-12 20:24:24,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4240 to 3930. [2021-06-12 20:24:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 3929 states have (on average 2.5283787223212015) internal successors, (9934), 3929 states have internal predecessors, (9934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 9934 transitions. [2021-06-12 20:24:24,086 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 9934 transitions. Word has length 48 [2021-06-12 20:24:24,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:24,086 INFO L482 AbstractCegarLoop]: Abstraction has 3930 states and 9934 transitions. [2021-06-12 20:24:24,086 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) [2021-06-12 20:24:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 9934 transitions. [2021-06-12 20:24:24,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:24,090 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:24,090 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:24,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-12 20:24:24,091 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:24,091 INFO L82 PathProgramCache]: Analyzing trace with hash -869937714, now seen corresponding path program 20 times [2021-06-12 20:24:24,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:24,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949041959] [2021-06-12 20:24:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:24,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:24,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949041959] [2021-06-12 20:24:24,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949041959] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:24,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:24,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:24:24,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548974815] [2021-06-12 20:24:24,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:24:24,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:24,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:24:24,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:24,183 INFO L87 Difference]: Start difference. First operand 3930 states and 9934 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) [2021-06-12 20:24:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:24,434 INFO L93 Difference]: Finished difference Result 5920 states and 14773 transitions. [2021-06-12 20:24:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-12 20:24:24,443 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 [2021-06-12 20:24:24,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:24,448 INFO L225 Difference]: With dead ends: 5920 [2021-06-12 20:24:24,448 INFO L226 Difference]: Without dead ends: 5762 [2021-06-12 20:24:24,448 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-06-12 20:24:24,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states. [2021-06-12 20:24:24,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 3948. [2021-06-12 20:24:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 3947 states have (on average 2.5267291613883964) internal successors, (9973), 3947 states have internal predecessors, (9973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 9973 transitions. [2021-06-12 20:24:24,520 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 9973 transitions. Word has length 48 [2021-06-12 20:24:24,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:24,520 INFO L482 AbstractCegarLoop]: Abstraction has 3948 states and 9973 transitions. [2021-06-12 20:24:24,521 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) [2021-06-12 20:24:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 9973 transitions. [2021-06-12 20:24:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:24,525 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:24,526 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:24,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-12 20:24:24,526 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:24,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:24,526 INFO L82 PathProgramCache]: Analyzing trace with hash -221230618, now seen corresponding path program 21 times [2021-06-12 20:24:24,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:24,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890495586] [2021-06-12 20:24:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:24,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:24,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890495586] [2021-06-12 20:24:24,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890495586] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:24,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:24,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:24:24,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989197486] [2021-06-12 20:24:24,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:24:24,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:24,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:24:24,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:24:24,617 INFO L87 Difference]: Start difference. First operand 3948 states and 9973 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) [2021-06-12 20:24:24,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:24,787 INFO L93 Difference]: Finished difference Result 5839 states and 14657 transitions. [2021-06-12 20:24:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 20:24:24,787 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 [2021-06-12 20:24:24,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:24,792 INFO L225 Difference]: With dead ends: 5839 [2021-06-12 20:24:24,792 INFO L226 Difference]: Without dead ends: 5775 [2021-06-12 20:24:24,793 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 86.3ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:24,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5775 states. [2021-06-12 20:24:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5775 to 4579. [2021-06-12 20:24:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4579 states, 4578 states have (on average 2.5190039318479687) internal successors, (11532), 4578 states have internal predecessors, (11532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 11532 transitions. [2021-06-12 20:24:24,873 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 11532 transitions. Word has length 48 [2021-06-12 20:24:24,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:24,873 INFO L482 AbstractCegarLoop]: Abstraction has 4579 states and 11532 transitions. [2021-06-12 20:24:24,873 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) [2021-06-12 20:24:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 11532 transitions. [2021-06-12 20:24:24,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:24,877 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:24,877 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:24,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-12 20:24:24,877 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:24,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:24,877 INFO L82 PathProgramCache]: Analyzing trace with hash 773664548, now seen corresponding path program 22 times [2021-06-12 20:24:24,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:24,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383793158] [2021-06-12 20:24:24,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:24,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:24,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383793158] [2021-06-12 20:24:24,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383793158] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:24,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:24,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:24:24,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733091136] [2021-06-12 20:24:24,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:24:24,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:24,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:24:24,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:24:24,969 INFO L87 Difference]: Start difference. First operand 4579 states and 11532 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) [2021-06-12 20:24:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:25,145 INFO L93 Difference]: Finished difference Result 5245 states and 13073 transitions. [2021-06-12 20:24:25,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 20:24:25,145 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 [2021-06-12 20:24:25,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:25,149 INFO L225 Difference]: With dead ends: 5245 [2021-06-12 20:24:25,150 INFO L226 Difference]: Without dead ends: 5047 [2021-06-12 20:24:25,150 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:25,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2021-06-12 20:24:25,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 4469. [2021-06-12 20:24:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 2.514547896150403) internal successors, (11235), 4468 states have internal predecessors, (11235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 11235 transitions. [2021-06-12 20:24:25,208 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 11235 transitions. Word has length 48 [2021-06-12 20:24:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:25,208 INFO L482 AbstractCegarLoop]: Abstraction has 4469 states and 11235 transitions. [2021-06-12 20:24:25,208 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) [2021-06-12 20:24:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 11235 transitions. [2021-06-12 20:24:25,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:25,212 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:25,212 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:25,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-12 20:24:25,213 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:25,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:25,213 INFO L82 PathProgramCache]: Analyzing trace with hash -458909894, now seen corresponding path program 23 times [2021-06-12 20:24:25,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:25,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581122358] [2021-06-12 20:24:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:25,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:25,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581122358] [2021-06-12 20:24:25,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581122358] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:25,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:25,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:24:25,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668918115] [2021-06-12 20:24:25,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:24:25,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:25,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:24:25,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:25,287 INFO L87 Difference]: Start difference. First operand 4469 states and 11235 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) [2021-06-12 20:24:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:25,428 INFO L93 Difference]: Finished difference Result 4805 states and 11947 transitions. [2021-06-12 20:24:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 20:24:25,429 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 [2021-06-12 20:24:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:25,433 INFO L225 Difference]: With dead ends: 4805 [2021-06-12 20:24:25,434 INFO L226 Difference]: Without dead ends: 4711 [2021-06-12 20:24:25,434 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 121.6ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:24:25,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-06-12 20:24:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4449. [2021-06-12 20:24:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4449 states, 4448 states have (on average 2.51011690647482) internal successors, (11165), 4448 states have internal predecessors, (11165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4449 states to 4449 states and 11165 transitions. [2021-06-12 20:24:25,538 INFO L78 Accepts]: Start accepts. Automaton has 4449 states and 11165 transitions. Word has length 48 [2021-06-12 20:24:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:25,538 INFO L482 AbstractCegarLoop]: Abstraction has 4449 states and 11165 transitions. [2021-06-12 20:24:25,539 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) [2021-06-12 20:24:25,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4449 states and 11165 transitions. [2021-06-12 20:24:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:25,544 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:25,544 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:25,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-12 20:24:25,544 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:25,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:25,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1054099754, now seen corresponding path program 24 times [2021-06-12 20:24:25,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:25,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780063462] [2021-06-12 20:24:25,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:25,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:25,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780063462] [2021-06-12 20:24:25,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780063462] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:25,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:25,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:24:25,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552889374] [2021-06-12 20:24:25,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:24:25,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:25,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:24:25,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:24:25,606 INFO L87 Difference]: Start difference. First operand 4449 states and 11165 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) [2021-06-12 20:24:25,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:25,759 INFO L93 Difference]: Finished difference Result 4760 states and 11813 transitions. [2021-06-12 20:24:25,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:24:25,759 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 [2021-06-12 20:24:25,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:25,765 INFO L225 Difference]: With dead ends: 4760 [2021-06-12 20:24:25,765 INFO L226 Difference]: Without dead ends: 4704 [2021-06-12 20:24:25,765 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:25,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4704 states. [2021-06-12 20:24:25,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4704 to 4374. [2021-06-12 20:24:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 2.499885662016922) internal successors, (10932), 4373 states have internal predecessors, (10932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 10932 transitions. [2021-06-12 20:24:25,841 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 10932 transitions. Word has length 48 [2021-06-12 20:24:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:25,841 INFO L482 AbstractCegarLoop]: Abstraction has 4374 states and 10932 transitions. [2021-06-12 20:24:25,841 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) [2021-06-12 20:24:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 10932 transitions. [2021-06-12 20:24:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:25,847 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:25,847 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:25,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-12 20:24:25,847 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:25,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:25,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1231787908, now seen corresponding path program 25 times [2021-06-12 20:24:25,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:25,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868883835] [2021-06-12 20:24:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:25,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:25,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868883835] [2021-06-12 20:24:25,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868883835] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:25,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:25,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:24:25,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705323682] [2021-06-12 20:24:25,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:24:25,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:25,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:24:25,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:24:25,920 INFO L87 Difference]: Start difference. First operand 4374 states and 10932 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) [2021-06-12 20:24:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:26,080 INFO L93 Difference]: Finished difference Result 4909 states and 12140 transitions. [2021-06-12 20:24:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 20:24:26,081 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 [2021-06-12 20:24:26,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:26,085 INFO L225 Difference]: With dead ends: 4909 [2021-06-12 20:24:26,085 INFO L226 Difference]: Without dead ends: 4841 [2021-06-12 20:24:26,086 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2021-06-12 20:24:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 4306. [2021-06-12 20:24:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4306 states, 4305 states have (on average 2.4961672473867598) internal successors, (10746), 4305 states have internal predecessors, (10746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:26,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 10746 transitions. [2021-06-12 20:24:26,147 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 10746 transitions. Word has length 48 [2021-06-12 20:24:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:26,147 INFO L482 AbstractCegarLoop]: Abstraction has 4306 states and 10746 transitions. [2021-06-12 20:24:26,147 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) [2021-06-12 20:24:26,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 10746 transitions. [2021-06-12 20:24:26,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:26,151 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:26,151 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:26,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-12 20:24:26,151 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:26,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:26,151 INFO L82 PathProgramCache]: Analyzing trace with hash -2068284222, now seen corresponding path program 26 times [2021-06-12 20:24:26,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:26,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994555248] [2021-06-12 20:24:26,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:26,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:26,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994555248] [2021-06-12 20:24:26,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994555248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:26,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:26,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:24:26,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647911080] [2021-06-12 20:24:26,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:24:26,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:26,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:24:26,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:24:26,230 INFO L87 Difference]: Start difference. First operand 4306 states and 10746 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) [2021-06-12 20:24:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:26,397 INFO L93 Difference]: Finished difference Result 4475 states and 10977 transitions. [2021-06-12 20:24:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 20:24:26,398 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 [2021-06-12 20:24:26,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:26,402 INFO L225 Difference]: With dead ends: 4475 [2021-06-12 20:24:26,402 INFO L226 Difference]: Without dead ends: 4280 [2021-06-12 20:24:26,403 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 83.5ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:26,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2021-06-12 20:24:26,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 3374. [2021-06-12 20:24:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3374 states, 3373 states have (on average 2.4841387488882303) internal successors, (8379), 3373 states have internal predecessors, (8379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 8379 transitions. [2021-06-12 20:24:26,465 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 8379 transitions. Word has length 48 [2021-06-12 20:24:26,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:26,466 INFO L482 AbstractCegarLoop]: Abstraction has 3374 states and 8379 transitions. [2021-06-12 20:24:26,466 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) [2021-06-12 20:24:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 8379 transitions. [2021-06-12 20:24:26,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:26,470 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:26,470 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:26,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-12 20:24:26,470 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:26,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:26,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1838280150, now seen corresponding path program 27 times [2021-06-12 20:24:26,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:26,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505894657] [2021-06-12 20:24:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:26,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:26,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505894657] [2021-06-12 20:24:26,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505894657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:26,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:26,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:24:26,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86873468] [2021-06-12 20:24:26,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:24:26,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:26,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:24:26,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:24:26,566 INFO L87 Difference]: Start difference. First operand 3374 states and 8379 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) [2021-06-12 20:24:26,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:26,691 INFO L93 Difference]: Finished difference Result 4310 states and 10585 transitions. [2021-06-12 20:24:26,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 20:24:26,691 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 [2021-06-12 20:24:26,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:26,694 INFO L225 Difference]: With dead ends: 4310 [2021-06-12 20:24:26,694 INFO L226 Difference]: Without dead ends: 4260 [2021-06-12 20:24:26,695 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:24:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states. [2021-06-12 20:24:26,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 3372. [2021-06-12 20:24:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3372 states, 3371 states have (on average 2.483239394838327) internal successors, (8371), 3371 states have internal predecessors, (8371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3372 states to 3372 states and 8371 transitions. [2021-06-12 20:24:26,753 INFO L78 Accepts]: Start accepts. Automaton has 3372 states and 8371 transitions. Word has length 48 [2021-06-12 20:24:26,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:26,753 INFO L482 AbstractCegarLoop]: Abstraction has 3372 states and 8371 transitions. [2021-06-12 20:24:26,753 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) [2021-06-12 20:24:26,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3372 states and 8371 transitions. [2021-06-12 20:24:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:26,757 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:26,757 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:26,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-12 20:24:26,757 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:26,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:26,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1498241870, now seen corresponding path program 28 times [2021-06-12 20:24:26,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:26,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648379806] [2021-06-12 20:24:26,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:26,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:26,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648379806] [2021-06-12 20:24:26,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648379806] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:26,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:26,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:24:26,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152497813] [2021-06-12 20:24:26,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:24:26,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:26,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:24:26,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:26,815 INFO L87 Difference]: Start difference. First operand 3372 states and 8371 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) [2021-06-12 20:24:26,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:26,967 INFO L93 Difference]: Finished difference Result 3775 states and 9256 transitions. [2021-06-12 20:24:26,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 20:24:26,968 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 [2021-06-12 20:24:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:26,972 INFO L225 Difference]: With dead ends: 3775 [2021-06-12 20:24:26,972 INFO L226 Difference]: Without dead ends: 3480 [2021-06-12 20:24:26,972 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:24:26,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2021-06-12 20:24:27,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3257. [2021-06-12 20:24:27,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 3256 states have (on average 2.466830466830467) internal successors, (8032), 3256 states have internal predecessors, (8032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 8032 transitions. [2021-06-12 20:24:27,012 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 8032 transitions. Word has length 48 [2021-06-12 20:24:27,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:27,012 INFO L482 AbstractCegarLoop]: Abstraction has 3257 states and 8032 transitions. [2021-06-12 20:24:27,012 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) [2021-06-12 20:24:27,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 8032 transitions. [2021-06-12 20:24:27,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:27,015 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:27,015 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:27,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-12 20:24:27,015 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:27,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1704921652, now seen corresponding path program 29 times [2021-06-12 20:24:27,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:27,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187634222] [2021-06-12 20:24:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:27,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:27,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187634222] [2021-06-12 20:24:27,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187634222] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:27,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:27,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:24:27,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810708377] [2021-06-12 20:24:27,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:24:27,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:27,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:24:27,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:27,119 INFO L87 Difference]: Start difference. First operand 3257 states and 8032 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) [2021-06-12 20:24:27,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:27,327 INFO L93 Difference]: Finished difference Result 4870 states and 11869 transitions. [2021-06-12 20:24:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 20:24:27,328 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 [2021-06-12 20:24:27,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:27,333 INFO L225 Difference]: With dead ends: 4870 [2021-06-12 20:24:27,333 INFO L226 Difference]: Without dead ends: 4564 [2021-06-12 20:24:27,333 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 129.2ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:24:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-06-12 20:24:27,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 3690. [2021-06-12 20:24:27,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3690 states, 3689 states have (on average 2.4407698563296285) internal successors, (9004), 3689 states have internal predecessors, (9004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:27,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3690 states to 3690 states and 9004 transitions. [2021-06-12 20:24:27,403 INFO L78 Accepts]: Start accepts. Automaton has 3690 states and 9004 transitions. Word has length 48 [2021-06-12 20:24:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:27,403 INFO L482 AbstractCegarLoop]: Abstraction has 3690 states and 9004 transitions. [2021-06-12 20:24:27,403 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) [2021-06-12 20:24:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3690 states and 9004 transitions. [2021-06-12 20:24:27,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:27,409 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:27,409 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:27,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-12 20:24:27,410 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:27,411 INFO L82 PathProgramCache]: Analyzing trace with hash 527044882, now seen corresponding path program 30 times [2021-06-12 20:24:27,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:27,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248638338] [2021-06-12 20:24:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:27,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:27,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248638338] [2021-06-12 20:24:27,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248638338] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:27,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:27,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:24:27,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6493354] [2021-06-12 20:24:27,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:24:27,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:27,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:24:27,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:27,518 INFO L87 Difference]: Start difference. First operand 3690 states and 9004 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) [2021-06-12 20:24:27,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:27,709 INFO L93 Difference]: Finished difference Result 4275 states and 10344 transitions. [2021-06-12 20:24:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 20:24:27,709 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 [2021-06-12 20:24:27,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:27,712 INFO L225 Difference]: With dead ends: 4275 [2021-06-12 20:24:27,712 INFO L226 Difference]: Without dead ends: 3923 [2021-06-12 20:24:27,712 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:24:27,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2021-06-12 20:24:27,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 3363. [2021-06-12 20:24:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 2.43575252825699) internal successors, (8189), 3362 states have internal predecessors, (8189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 8189 transitions. [2021-06-12 20:24:27,782 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 8189 transitions. Word has length 48 [2021-06-12 20:24:27,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:27,782 INFO L482 AbstractCegarLoop]: Abstraction has 3363 states and 8189 transitions. [2021-06-12 20:24:27,783 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) [2021-06-12 20:24:27,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 8189 transitions. [2021-06-12 20:24:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:27,785 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:27,786 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:27,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-12 20:24:27,786 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:27,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:27,786 INFO L82 PathProgramCache]: Analyzing trace with hash -651091468, now seen corresponding path program 31 times [2021-06-12 20:24:27,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:27,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300874523] [2021-06-12 20:24:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:27,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:27,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300874523] [2021-06-12 20:24:27,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300874523] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:27,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:27,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:24:27,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063747735] [2021-06-12 20:24:27,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:24:27,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:27,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:24:27,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:27,877 INFO L87 Difference]: Start difference. First operand 3363 states and 8189 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) [2021-06-12 20:24:28,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:28,054 INFO L93 Difference]: Finished difference Result 3934 states and 9488 transitions. [2021-06-12 20:24:28,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 20:24:28,055 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 [2021-06-12 20:24:28,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:28,058 INFO L225 Difference]: With dead ends: 3934 [2021-06-12 20:24:28,058 INFO L226 Difference]: Without dead ends: 3721 [2021-06-12 20:24:28,058 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:24:28,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2021-06-12 20:24:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 3363. [2021-06-12 20:24:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 2.4146341463414633) internal successors, (8118), 3362 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:28,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 8118 transitions. [2021-06-12 20:24:28,102 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 8118 transitions. Word has length 48 [2021-06-12 20:24:28,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:28,102 INFO L482 AbstractCegarLoop]: Abstraction has 3363 states and 8118 transitions. [2021-06-12 20:24:28,102 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) [2021-06-12 20:24:28,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 8118 transitions. [2021-06-12 20:24:28,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:28,105 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:28,105 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:28,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-12 20:24:28,105 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:28,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:28,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1828968238, now seen corresponding path program 32 times [2021-06-12 20:24:28,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:28,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781718679] [2021-06-12 20:24:28,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:28,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:28,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781718679] [2021-06-12 20:24:28,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781718679] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:28,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:28,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:24:28,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039035944] [2021-06-12 20:24:28,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:24:28,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:28,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:24:28,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:28,207 INFO L87 Difference]: Start difference. First operand 3363 states and 8118 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) [2021-06-12 20:24:28,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:28,366 INFO L93 Difference]: Finished difference Result 3710 states and 8881 transitions. [2021-06-12 20:24:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 20:24:28,366 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 [2021-06-12 20:24:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:28,369 INFO L225 Difference]: With dead ends: 3710 [2021-06-12 20:24:28,369 INFO L226 Difference]: Without dead ends: 2869 [2021-06-12 20:24:28,369 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 106.4ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-06-12 20:24:28,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2021-06-12 20:24:28,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2556. [2021-06-12 20:24:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2556 states, 2555 states have (on average 2.3839530332681016) internal successors, (6091), 2555 states have internal predecessors, (6091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 6091 transitions. [2021-06-12 20:24:28,408 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 6091 transitions. Word has length 48 [2021-06-12 20:24:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:28,409 INFO L482 AbstractCegarLoop]: Abstraction has 2556 states and 6091 transitions. [2021-06-12 20:24:28,409 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) [2021-06-12 20:24:28,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 6091 transitions. [2021-06-12 20:24:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:28,412 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:28,412 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:28,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-12 20:24:28,412 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:28,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1083335310, now seen corresponding path program 33 times [2021-06-12 20:24:28,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:28,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566291309] [2021-06-12 20:24:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:28,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:28,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566291309] [2021-06-12 20:24:28,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566291309] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:28,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:28,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 20:24:28,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884811306] [2021-06-12 20:24:28,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 20:24:28,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:28,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 20:24:28,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:28,494 INFO L87 Difference]: Start difference. First operand 2556 states and 6091 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) [2021-06-12 20:24:28,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:28,616 INFO L93 Difference]: Finished difference Result 2804 states and 6608 transitions. [2021-06-12 20:24:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 20:24:28,616 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 [2021-06-12 20:24:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:28,619 INFO L225 Difference]: With dead ends: 2804 [2021-06-12 20:24:28,619 INFO L226 Difference]: Without dead ends: 2292 [2021-06-12 20:24:28,619 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 99.2ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-12 20:24:28,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2021-06-12 20:24:28,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2017. [2021-06-12 20:24:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 2016 states have (on average 2.3452380952380953) internal successors, (4728), 2016 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 4728 transitions. [2021-06-12 20:24:28,644 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 4728 transitions. Word has length 48 [2021-06-12 20:24:28,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:28,644 INFO L482 AbstractCegarLoop]: Abstraction has 2017 states and 4728 transitions. [2021-06-12 20:24:28,644 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) [2021-06-12 20:24:28,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 4728 transitions. [2021-06-12 20:24:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:28,646 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:28,646 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:28,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-12 20:24:28,647 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:28,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1742602862, now seen corresponding path program 34 times [2021-06-12 20:24:28,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:28,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881819140] [2021-06-12 20:24:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:28,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:28,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881819140] [2021-06-12 20:24:28,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881819140] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:28,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:28,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:24:28,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648116282] [2021-06-12 20:24:28,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:24:28,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:28,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:24:28,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:24:28,703 INFO L87 Difference]: Start difference. First operand 2017 states and 4728 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) [2021-06-12 20:24:28,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:28,806 INFO L93 Difference]: Finished difference Result 1920 states and 4429 transitions. [2021-06-12 20:24:28,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 20:24:28,806 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 [2021-06-12 20:24:28,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:28,808 INFO L225 Difference]: With dead ends: 1920 [2021-06-12 20:24:28,808 INFO L226 Difference]: Without dead ends: 1704 [2021-06-12 20:24:28,808 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:24:28,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2021-06-12 20:24:28,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1704. [2021-06-12 20:24:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 2.312977099236641) internal successors, (3939), 1703 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:28,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 3939 transitions. [2021-06-12 20:24:28,845 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 3939 transitions. Word has length 48 [2021-06-12 20:24:28,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:28,845 INFO L482 AbstractCegarLoop]: Abstraction has 1704 states and 3939 transitions. [2021-06-12 20:24:28,845 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) [2021-06-12 20:24:28,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 3939 transitions. [2021-06-12 20:24:28,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:28,846 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:28,846 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:28,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-12 20:24:28,846 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:28,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:28,847 INFO L82 PathProgramCache]: Analyzing trace with hash 668037194, now seen corresponding path program 35 times [2021-06-12 20:24:28,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:28,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562630987] [2021-06-12 20:24:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:28,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:28,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562630987] [2021-06-12 20:24:28,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562630987] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:28,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:28,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 20:24:28,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379999326] [2021-06-12 20:24:28,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 20:24:28,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:28,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 20:24:28,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:24:28,927 INFO L87 Difference]: Start difference. First operand 1704 states and 3939 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) [2021-06-12 20:24:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:29,013 INFO L93 Difference]: Finished difference Result 2079 states and 4726 transitions. [2021-06-12 20:24:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 20:24:29,013 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 [2021-06-12 20:24:29,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:29,014 INFO L225 Difference]: With dead ends: 2079 [2021-06-12 20:24:29,014 INFO L226 Difference]: Without dead ends: 1763 [2021-06-12 20:24:29,014 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 41.0ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-12 20:24:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-06-12 20:24:29,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1561. [2021-06-12 20:24:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1560 states have (on average 2.2788461538461537) internal successors, (3555), 1560 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 3555 transitions. [2021-06-12 20:24:29,041 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 3555 transitions. Word has length 48 [2021-06-12 20:24:29,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:29,041 INFO L482 AbstractCegarLoop]: Abstraction has 1561 states and 3555 transitions. [2021-06-12 20:24:29,041 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) [2021-06-12 20:24:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 3555 transitions. [2021-06-12 20:24:29,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:29,043 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:29,043 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:29,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-12 20:24:29,044 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:29,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:29,044 INFO L82 PathProgramCache]: Analyzing trace with hash -641387982, now seen corresponding path program 36 times [2021-06-12 20:24:29,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:29,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071338961] [2021-06-12 20:24:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:29,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:29,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:29,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071338961] [2021-06-12 20:24:29,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071338961] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:29,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:29,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:24:29,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851743157] [2021-06-12 20:24:29,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:24:29,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:29,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:24:29,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:24:29,109 INFO L87 Difference]: Start difference. First operand 1561 states and 3555 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) [2021-06-12 20:24:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:29,203 INFO L93 Difference]: Finished difference Result 1567 states and 3496 transitions. [2021-06-12 20:24:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:24:29,204 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 [2021-06-12 20:24:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:29,204 INFO L225 Difference]: With dead ends: 1567 [2021-06-12 20:24:29,205 INFO L226 Difference]: Without dead ends: 1281 [2021-06-12 20:24:29,205 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-12 20:24:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-12 20:24:29,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2021-06-12 20:24:29,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 2.2234375) internal successors, (2846), 1280 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:29,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 2846 transitions. [2021-06-12 20:24:29,218 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 2846 transitions. Word has length 48 [2021-06-12 20:24:29,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:29,218 INFO L482 AbstractCegarLoop]: Abstraction has 1281 states and 2846 transitions. [2021-06-12 20:24:29,218 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) [2021-06-12 20:24:29,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 2846 transitions. [2021-06-12 20:24:29,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:29,219 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:29,219 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:29,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-12 20:24:29,219 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:29,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:29,220 INFO L82 PathProgramCache]: Analyzing trace with hash 916459414, now seen corresponding path program 37 times [2021-06-12 20:24:29,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:29,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716939773] [2021-06-12 20:24:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:29,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:29,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716939773] [2021-06-12 20:24:29,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716939773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:29,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:29,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-12 20:24:29,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268274360] [2021-06-12 20:24:29,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 20:24:29,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:29,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 20:24:29,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-12 20:24:29,301 INFO L87 Difference]: Start difference. First operand 1281 states and 2846 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) [2021-06-12 20:24:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:29,506 INFO L93 Difference]: Finished difference Result 1089 states and 2368 transitions. [2021-06-12 20:24:29,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 20:24:29,506 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 [2021-06-12 20:24:29,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:29,507 INFO L225 Difference]: With dead ends: 1089 [2021-06-12 20:24:29,507 INFO L226 Difference]: Without dead ends: 489 [2021-06-12 20:24:29,507 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 108.4ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-06-12 20:24:29,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-06-12 20:24:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 363. [2021-06-12 20:24:29,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.1270718232044197) internal successors, (770), 362 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 20:24:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 770 transitions. [2021-06-12 20:24:29,511 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 770 transitions. Word has length 48 [2021-06-12 20:24:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:29,511 INFO L482 AbstractCegarLoop]: Abstraction has 363 states and 770 transitions. [2021-06-12 20:24:29,511 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) [2021-06-12 20:24:29,511 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 770 transitions. [2021-06-12 20:24:29,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 20:24:29,512 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 20:24:29,512 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 20:24:29,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-12 20:24:29,512 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 20:24:29,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 20:24:29,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1286069184, now seen corresponding path program 38 times [2021-06-12 20:24:29,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 20:24:29,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797018526] [2021-06-12 20:24:29,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 20:24:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 20:24:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 20:24:29,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 20:24:29,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797018526] [2021-06-12 20:24:29,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797018526] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 20:24:29,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 20:24:29,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 20:24:29,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530926389] [2021-06-12 20:24:29,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 20:24:29,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 20:24:29,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 20:24:29,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-12 20:24:29,610 INFO L87 Difference]: Start difference. First operand 363 states and 770 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) [2021-06-12 20:24:29,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 20:24:29,720 INFO L93 Difference]: Finished difference Result 343 states and 732 transitions. [2021-06-12 20:24:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 20:24:29,720 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 [2021-06-12 20:24:29,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 20:24:29,721 INFO L225 Difference]: With dead ends: 343 [2021-06-12 20:24:29,721 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 20:24:29,721 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-12 20:24:29,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 20:24:29,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 20:24:29,721 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) [2021-06-12 20:24:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 20:24:29,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-06-12 20:24:29,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 20:24:29,721 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 20:24:29,721 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) [2021-06-12 20:24:29,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 20:24:29,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 20:24:29,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-12 20:24:29,723 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 20:24:29,725 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 08:24:29 BasicIcfg [2021-06-12 20:24:29,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 20:24:29,725 INFO L168 Benchmark]: Toolchain (without parser) took 17546.49 ms. Allocated memory was 185.6 MB in the beginning and 747.6 MB in the end (delta: 562.0 MB). Free memory was 165.3 MB in the beginning and 465.8 MB in the end (delta: -300.6 MB). Peak memory consumption was 262.1 MB. Max. memory is 8.0 GB. [2021-06-12 20:24:29,725 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 185.6 MB. Free memory is still 166.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 20:24:29,725 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.03 ms. Allocated memory is still 185.6 MB. Free memory was 165.1 MB in the beginning and 163.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 20:24:29,725 INFO L168 Benchmark]: Boogie Preprocessor took 24.71 ms. Allocated memory is still 185.6 MB. Free memory was 163.6 MB in the beginning and 162.7 MB in the end (delta: 863.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 20:24:29,725 INFO L168 Benchmark]: RCFGBuilder took 259.69 ms. Allocated memory is still 185.6 MB. Free memory was 162.5 MB in the beginning and 148.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-12 20:24:29,726 INFO L168 Benchmark]: TraceAbstraction took 17222.09 ms. Allocated memory was 185.6 MB in the beginning and 747.6 MB in the end (delta: 562.0 MB). Free memory was 148.1 MB in the beginning and 465.8 MB in the end (delta: -317.7 MB). Peak memory consumption was 245.3 MB. Max. memory is 8.0 GB. [2021-06-12 20:24:29,726 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 0.13 ms. Allocated memory is still 185.6 MB. Free memory is still 166.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.03 ms. Allocated memory is still 185.6 MB. Free memory was 165.1 MB in the beginning and 163.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.71 ms. Allocated memory is still 185.6 MB. Free memory was 163.6 MB in the beginning and 162.7 MB in the end (delta: 863.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 259.69 ms. Allocated memory is still 185.6 MB. Free memory was 162.5 MB in the beginning and 148.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17222.09 ms. Allocated memory was 185.6 MB in the beginning and 747.6 MB in the end (delta: 562.0 MB). Free memory was 148.1 MB in the beginning and 465.8 MB in the end (delta: -317.7 MB). Peak memory consumption was 245.3 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: 17086.3ms, OverallIterations: 38, TraceHistogramMax: 1, EmptinessCheckTime: 278.2ms, AutomataDifference: 8966.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 199.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3916 SDtfs, 6892 SDslu, 14639 SDs, 0 SdLazy, 8660 SolverSat, 1653 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4362.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 494 GetRequests, 54 SyntacticMatches, 26 SemanticMatches, 414 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 4263.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5972occurred in iteration=14, InterpolantAutomatonStates: 411, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3372.2ms AutomataMinimizationTime, 38 MinimizatonAttempts, 40687 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 56.4ms SsaConstructionTime, 348.2ms SatisfiabilityAnalysisTime, 3570.8ms InterpolantComputationTime, 1824 NumberOfCodeBlocks, 1824 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1786 ConstructedInterpolants, 0 QuantifiedInterpolants, 10400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 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...