/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 20:50:11,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 20:50:11,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 20:50:11,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 20:50:11,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 20:50:11,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 20:50:11,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 20:50:11,977 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 [2021-05-21 20:50:12,004 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 20:50:12,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 20:50:12,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 20:50:12,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 20:50:12,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 20:50:12,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 20:50:12,007 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 20:50:12,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 20:50:12,007 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 20:50:12,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 20:50:12,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 20:50:12,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 20:50:12,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 20:50:12,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 20:50:12,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 20:50:12,008 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 20:50:12,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 20:50:12,008 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 20:50:12,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 20:50:12,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 20:50:12,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 20:50:12,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 20:50:12,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 20:50:12,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 20:50:12,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 20:50:12,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 20:50:12,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 20:50:12,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 20:50:12,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 20:50:12,010 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 20:50:12,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 20:50:12,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 20:50:12,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 20:50:12,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 20:50:12,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 20:50:12,272 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-21 20:50:12,273 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-21 20:50:12,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-05-21 20:50:12,273 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-05-21 20:50:12,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 20:50:12,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-21 20:50:12,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 20:50:12,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 20:50:12,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 20:50:12,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:50:12" (1/1) ... [2021-05-21 20:50:12,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:50:12" (1/1) ... [2021-05-21 20:50:12,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 20:50:12,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 20:50:12,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 20:50:12,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 20:50:12,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:50:12" (1/1) ... [2021-05-21 20:50:12,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:50:12" (1/1) ... [2021-05-21 20:50:12,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:50:12" (1/1) ... [2021-05-21 20:50:12,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:50:12" (1/1) ... [2021-05-21 20:50:12,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:50:12" (1/1) ... [2021-05-21 20:50:12,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:50:12" (1/1) ... [2021-05-21 20:50:12,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:50:12" (1/1) ... [2021-05-21 20:50:12,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 20:50:12,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 20:50:12,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 20:50:12,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 20:50:12,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:50:12" (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 [2021-05-21 20:50:12,387 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-21 20:50:12,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-21 20:50:12,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-21 20:50:12,388 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-21 20:50:12,388 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-21 20:50:12,388 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-21 20:50:12,388 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-21 20:50:12,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 20:50:12,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 20:50:12,389 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-21 20:50:12,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-21 20:50:12,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-21 20:50:12,389 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 20:50:12,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 20:50:12,530 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-21 20:50:12,530 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 08:50:12 BoogieIcfgContainer [2021-05-21 20:50:12,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 20:50:12,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 20:50:12,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 20:50:12,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 20:50:12,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:50:12" (1/2) ... [2021-05-21 20:50:12,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3899584f and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 08:50:12, skipping insertion in model container [2021-05-21 20:50:12,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 08:50:12" (2/2) ... [2021-05-21 20:50:12,535 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-05-21 20:50:12,539 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 20:50:12,539 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 20:50:12,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 20:50:12,540 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 20:50:12,607 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-05-21 20:50:12,622 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-21 20:50:12,650 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 20:50:12,650 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 20:50:12,650 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 20:50:12,650 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 20:50:12,650 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 20:50:12,650 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 20:50:12,650 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 20:50:12,650 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 20:50:12,657 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 41 transitions, 106 flow [2021-05-21 20:50:12,720 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:12,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:12,734 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:12,735 INFO L521 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] [2021-05-21 20:50:12,735 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:12,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:12,739 INFO L82 PathProgramCache]: Analyzing trace with hash 974063972, now seen corresponding path program 1 times [2021-05-21 20:50:12,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:12,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852961496] [2021-05-21 20:50:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:12,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:12,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:12,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852961496] [2021-05-21 20:50:12,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852961496] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:12,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:12,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:12,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38311371] [2021-05-21 20:50:12,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:12,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:12,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:12,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:12,913 INFO L87 Difference]: Start difference. First operand has 675 states, 673 states have (on average 2.585438335809807) internal successors, (1740), 674 states have internal predecessors, (1740), 0 states have call successors, (0), 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 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:13,151 INFO L93 Difference]: Finished difference Result 998 states and 2445 transitions. [2021-05-21 20:50:13,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:50:13,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:13,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:13,173 INFO L225 Difference]: With dead ends: 998 [2021-05-21 20:50:13,174 INFO L226 Difference]: Without dead ends: 923 [2021-05-21 20:50:13,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 100.1ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-05-21 20:50:13,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-05-21 20:50:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 687. [2021-05-21 20:50:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.564139941690962) internal successors, (1759), 686 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1759 transitions. [2021-05-21 20:50:13,275 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1759 transitions. Word has length 36 [2021-05-21 20:50:13,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:13,276 INFO L482 AbstractCegarLoop]: Abstraction has 687 states and 1759 transitions. [2021-05-21 20:50:13,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1759 transitions. [2021-05-21 20:50:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:13,278 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:13,278 INFO L521 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] [2021-05-21 20:50:13,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 20:50:13,288 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:13,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:13,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1374757314, now seen corresponding path program 2 times [2021-05-21 20:50:13,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:13,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031905055] [2021-05-21 20:50:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:13,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:13,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031905055] [2021-05-21 20:50:13,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031905055] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:13,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:13,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:50:13,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190440933] [2021-05-21 20:50:13,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:13,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:13,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:13,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:13,371 INFO L87 Difference]: Start difference. First operand 687 states and 1759 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:13,485 INFO L93 Difference]: Finished difference Result 1384 states and 3517 transitions. [2021-05-21 20:50:13,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:50:13,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:13,490 INFO L225 Difference]: With dead ends: 1384 [2021-05-21 20:50:13,490 INFO L226 Difference]: Without dead ends: 1324 [2021-05-21 20:50:13,490 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 72.6ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-05-21 20:50:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-05-21 20:50:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 755. [2021-05-21 20:50:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 754 states have (on average 2.5450928381962865) internal successors, (1919), 754 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1919 transitions. [2021-05-21 20:50:13,511 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1919 transitions. Word has length 36 [2021-05-21 20:50:13,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:13,511 INFO L482 AbstractCegarLoop]: Abstraction has 755 states and 1919 transitions. [2021-05-21 20:50:13,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,511 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1919 transitions. [2021-05-21 20:50:13,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:13,513 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:13,513 INFO L521 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] [2021-05-21 20:50:13,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 20:50:13,513 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:13,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:13,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1141840352, now seen corresponding path program 3 times [2021-05-21 20:50:13,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:13,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076299147] [2021-05-21 20:50:13,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:13,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:13,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076299147] [2021-05-21 20:50:13,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076299147] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:13,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:13,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:50:13,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550126320] [2021-05-21 20:50:13,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:50:13,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:13,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:50:13,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:50:13,539 INFO L87 Difference]: Start difference. First operand 755 states and 1919 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:13,545 INFO L93 Difference]: Finished difference Result 711 states and 1782 transitions. [2021-05-21 20:50:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:50:13,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:13,547 INFO L225 Difference]: With dead ends: 711 [2021-05-21 20:50:13,547 INFO L226 Difference]: Without dead ends: 711 [2021-05-21 20:50:13,548 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:50:13,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-05-21 20:50:13,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2021-05-21 20:50:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 2.5098591549295777) internal successors, (1782), 710 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1782 transitions. [2021-05-21 20:50:13,561 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1782 transitions. Word has length 36 [2021-05-21 20:50:13,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:13,561 INFO L482 AbstractCegarLoop]: Abstraction has 711 states and 1782 transitions. [2021-05-21 20:50:13,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,561 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1782 transitions. [2021-05-21 20:50:13,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:13,563 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:13,563 INFO L521 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] [2021-05-21 20:50:13,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 20:50:13,563 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:13,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:13,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1806691788, now seen corresponding path program 4 times [2021-05-21 20:50:13,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:13,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096438605] [2021-05-21 20:50:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:13,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:13,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096438605] [2021-05-21 20:50:13,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096438605] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:13,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:13,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:13,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524898620] [2021-05-21 20:50:13,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:13,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:13,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:13,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:13,609 INFO L87 Difference]: Start difference. First operand 711 states and 1782 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:13,724 INFO L93 Difference]: Finished difference Result 1037 states and 2486 transitions. [2021-05-21 20:50:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 20:50:13,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:13,728 INFO L225 Difference]: With dead ends: 1037 [2021-05-21 20:50:13,729 INFO L226 Difference]: Without dead ends: 946 [2021-05-21 20:50:13,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-05-21 20:50:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-05-21 20:50:13,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 725. [2021-05-21 20:50:13,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 2.4903314917127073) internal successors, (1803), 724 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1803 transitions. [2021-05-21 20:50:13,745 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1803 transitions. Word has length 36 [2021-05-21 20:50:13,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:13,746 INFO L482 AbstractCegarLoop]: Abstraction has 725 states and 1803 transitions. [2021-05-21 20:50:13,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,746 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1803 transitions. [2021-05-21 20:50:13,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:13,747 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:13,747 INFO L521 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] [2021-05-21 20:50:13,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 20:50:13,747 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:13,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:13,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1002048854, now seen corresponding path program 5 times [2021-05-21 20:50:13,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:13,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553643102] [2021-05-21 20:50:13,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:13,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:13,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553643102] [2021-05-21 20:50:13,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553643102] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:13,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:13,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:50:13,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289438627] [2021-05-21 20:50:13,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:50:13,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:13,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:50:13,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:50:13,820 INFO L87 Difference]: Start difference. First operand 725 states and 1803 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:13,948 INFO L93 Difference]: Finished difference Result 1727 states and 4287 transitions. [2021-05-21 20:50:13,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:50:13,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:13,954 INFO L225 Difference]: With dead ends: 1727 [2021-05-21 20:50:13,954 INFO L226 Difference]: Without dead ends: 1715 [2021-05-21 20:50:13,954 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-05-21 20:50:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2021-05-21 20:50:13,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 819. [2021-05-21 20:50:13,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 2.488997555012225) internal successors, (2036), 818 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 2036 transitions. [2021-05-21 20:50:13,987 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 2036 transitions. Word has length 36 [2021-05-21 20:50:13,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:13,987 INFO L482 AbstractCegarLoop]: Abstraction has 819 states and 2036 transitions. [2021-05-21 20:50:13,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 2036 transitions. [2021-05-21 20:50:13,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:13,988 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:13,988 INFO L521 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] [2021-05-21 20:50:13,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 20:50:13,989 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:13,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:13,989 INFO L82 PathProgramCache]: Analyzing trace with hash -2018104662, now seen corresponding path program 6 times [2021-05-21 20:50:13,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:13,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087012591] [2021-05-21 20:50:13,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:14,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:14,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087012591] [2021-05-21 20:50:14,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087012591] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:14,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:14,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:50:14,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965732950] [2021-05-21 20:50:14,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:50:14,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:14,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:50:14,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:50:14,067 INFO L87 Difference]: Start difference. First operand 819 states and 2036 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:14,181 INFO L93 Difference]: Finished difference Result 1666 states and 4109 transitions. [2021-05-21 20:50:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:50:14,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:14,186 INFO L225 Difference]: With dead ends: 1666 [2021-05-21 20:50:14,186 INFO L226 Difference]: Without dead ends: 1638 [2021-05-21 20:50:14,186 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-05-21 20:50:14,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-05-21 20:50:14,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 799. [2021-05-21 20:50:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 2.4862155388471177) internal successors, (1984), 798 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1984 transitions. [2021-05-21 20:50:14,204 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1984 transitions. Word has length 36 [2021-05-21 20:50:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:14,206 INFO L482 AbstractCegarLoop]: Abstraction has 799 states and 1984 transitions. [2021-05-21 20:50:14,207 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,207 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1984 transitions. [2021-05-21 20:50:14,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:14,211 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:14,211 INFO L521 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] [2021-05-21 20:50:14,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 20:50:14,212 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:14,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:14,212 INFO L82 PathProgramCache]: Analyzing trace with hash 888977548, now seen corresponding path program 7 times [2021-05-21 20:50:14,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:14,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743043181] [2021-05-21 20:50:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:14,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:14,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:14,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743043181] [2021-05-21 20:50:14,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743043181] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:14,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:14,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:50:14,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379237411] [2021-05-21 20:50:14,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:50:14,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:14,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:50:14,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:50:14,297 INFO L87 Difference]: Start difference. First operand 799 states and 1984 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:14,406 INFO L93 Difference]: Finished difference Result 1712 states and 4234 transitions. [2021-05-21 20:50:14,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:50:14,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:14,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:14,411 INFO L225 Difference]: With dead ends: 1712 [2021-05-21 20:50:14,411 INFO L226 Difference]: Without dead ends: 1700 [2021-05-21 20:50:14,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-05-21 20:50:14,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2021-05-21 20:50:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 854. [2021-05-21 20:50:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 2.4935521688159437) internal successors, (2127), 853 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 2127 transitions. [2021-05-21 20:50:14,430 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 2127 transitions. Word has length 36 [2021-05-21 20:50:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:14,432 INFO L482 AbstractCegarLoop]: Abstraction has 854 states and 2127 transitions. [2021-05-21 20:50:14,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 2127 transitions. [2021-05-21 20:50:14,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:14,434 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:14,434 INFO L521 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] [2021-05-21 20:50:14,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 20:50:14,434 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:14,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:14,434 INFO L82 PathProgramCache]: Analyzing trace with hash -127078260, now seen corresponding path program 8 times [2021-05-21 20:50:14,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:14,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245418119] [2021-05-21 20:50:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:14,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:14,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245418119] [2021-05-21 20:50:14,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245418119] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:14,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:14,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:50:14,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292663426] [2021-05-21 20:50:14,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:50:14,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:14,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:50:14,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:50:14,552 INFO L87 Difference]: Start difference. First operand 854 states and 2127 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:14,657 INFO L93 Difference]: Finished difference Result 1651 states and 4056 transitions. [2021-05-21 20:50:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:50:14,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:14,662 INFO L225 Difference]: With dead ends: 1651 [2021-05-21 20:50:14,662 INFO L226 Difference]: Without dead ends: 1627 [2021-05-21 20:50:14,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-05-21 20:50:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-05-21 20:50:14,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 814. [2021-05-21 20:50:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 2.4846248462484626) internal successors, (2020), 813 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 2020 transitions. [2021-05-21 20:50:14,681 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 2020 transitions. Word has length 36 [2021-05-21 20:50:14,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:14,681 INFO L482 AbstractCegarLoop]: Abstraction has 814 states and 2020 transitions. [2021-05-21 20:50:14,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,681 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 2020 transitions. [2021-05-21 20:50:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:14,684 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:14,684 INFO L521 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] [2021-05-21 20:50:14,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 20:50:14,684 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1614595956, now seen corresponding path program 9 times [2021-05-21 20:50:14,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:14,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364199200] [2021-05-21 20:50:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:14,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:14,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364199200] [2021-05-21 20:50:14,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364199200] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:14,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:14,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:50:14,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081939615] [2021-05-21 20:50:14,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:50:14,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:14,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:50:14,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:50:14,712 INFO L87 Difference]: Start difference. First operand 814 states and 2020 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:14,717 INFO L93 Difference]: Finished difference Result 790 states and 1933 transitions. [2021-05-21 20:50:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:50:14,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:14,719 INFO L225 Difference]: With dead ends: 790 [2021-05-21 20:50:14,719 INFO L226 Difference]: Without dead ends: 780 [2021-05-21 20:50:14,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:50:14,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-05-21 20:50:14,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2021-05-21 20:50:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 2.453145057766367) internal successors, (1911), 779 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1911 transitions. [2021-05-21 20:50:14,732 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1911 transitions. Word has length 36 [2021-05-21 20:50:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:14,732 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 1911 transitions. [2021-05-21 20:50:14,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1911 transitions. [2021-05-21 20:50:14,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:14,733 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:14,733 INFO L521 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] [2021-05-21 20:50:14,733 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 20:50:14,735 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:14,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:14,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1296551418, now seen corresponding path program 10 times [2021-05-21 20:50:14,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:14,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497432347] [2021-05-21 20:50:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:14,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:14,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497432347] [2021-05-21 20:50:14,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497432347] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:14,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:14,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:14,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630588381] [2021-05-21 20:50:14,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:14,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:14,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:14,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:14,789 INFO L87 Difference]: Start difference. First operand 780 states and 1911 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:14,905 INFO L93 Difference]: Finished difference Result 1251 states and 2962 transitions. [2021-05-21 20:50:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-21 20:50:14,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:14,909 INFO L225 Difference]: With dead ends: 1251 [2021-05-21 20:50:14,909 INFO L226 Difference]: Without dead ends: 1065 [2021-05-21 20:50:14,909 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:50:14,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-05-21 20:50:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 851. [2021-05-21 20:50:14,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 2.408235294117647) internal successors, (2047), 850 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 2047 transitions. [2021-05-21 20:50:14,924 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 2047 transitions. Word has length 36 [2021-05-21 20:50:14,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:14,924 INFO L482 AbstractCegarLoop]: Abstraction has 851 states and 2047 transitions. [2021-05-21 20:50:14,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 2047 transitions. [2021-05-21 20:50:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:14,925 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:14,925 INFO L521 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] [2021-05-21 20:50:14,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 20:50:14,925 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:14,926 INFO L82 PathProgramCache]: Analyzing trace with hash 846284964, now seen corresponding path program 11 times [2021-05-21 20:50:14,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:14,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266247397] [2021-05-21 20:50:14,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:14,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:14,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:14,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266247397] [2021-05-21 20:50:14,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266247397] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:14,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:14,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:14,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739140518] [2021-05-21 20:50:14,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:14,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:14,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:14,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:14,954 INFO L87 Difference]: Start difference. First operand 851 states and 2047 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:15,070 INFO L93 Difference]: Finished difference Result 1179 states and 2770 transitions. [2021-05-21 20:50:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-21 20:50:15,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:15,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:15,074 INFO L225 Difference]: With dead ends: 1179 [2021-05-21 20:50:15,074 INFO L226 Difference]: Without dead ends: 1051 [2021-05-21 20:50:15,074 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:50:15,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-05-21 20:50:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 845. [2021-05-21 20:50:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.4004739336492893) internal successors, (2026), 844 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2026 transitions. [2021-05-21 20:50:15,088 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2026 transitions. Word has length 36 [2021-05-21 20:50:15,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:15,089 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2026 transitions. [2021-05-21 20:50:15,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,089 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2026 transitions. [2021-05-21 20:50:15,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:15,090 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:15,090 INFO L521 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] [2021-05-21 20:50:15,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-21 20:50:15,090 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:15,090 INFO L82 PathProgramCache]: Analyzing trace with hash -911699450, now seen corresponding path program 12 times [2021-05-21 20:50:15,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:15,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575143933] [2021-05-21 20:50:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:15,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:15,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575143933] [2021-05-21 20:50:15,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575143933] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:15,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:15,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:15,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712204920] [2021-05-21 20:50:15,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:15,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:15,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:15,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:15,123 INFO L87 Difference]: Start difference. First operand 845 states and 2026 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:15,208 INFO L93 Difference]: Finished difference Result 1124 states and 2638 transitions. [2021-05-21 20:50:15,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 20:50:15,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:15,211 INFO L225 Difference]: With dead ends: 1124 [2021-05-21 20:50:15,211 INFO L226 Difference]: Without dead ends: 934 [2021-05-21 20:50:15,212 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-05-21 20:50:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-05-21 20:50:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 760. [2021-05-21 20:50:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 2.399209486166008) internal successors, (1821), 759 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1821 transitions. [2021-05-21 20:50:15,239 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1821 transitions. Word has length 36 [2021-05-21 20:50:15,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:15,239 INFO L482 AbstractCegarLoop]: Abstraction has 760 states and 1821 transitions. [2021-05-21 20:50:15,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,239 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1821 transitions. [2021-05-21 20:50:15,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:15,240 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:15,240 INFO L521 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] [2021-05-21 20:50:15,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-21 20:50:15,240 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:15,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:15,241 INFO L82 PathProgramCache]: Analyzing trace with hash -886716842, now seen corresponding path program 13 times [2021-05-21 20:50:15,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:15,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685834539] [2021-05-21 20:50:15,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:15,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:15,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685834539] [2021-05-21 20:50:15,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685834539] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:15,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:15,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:15,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932891147] [2021-05-21 20:50:15,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:15,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:15,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:15,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:15,270 INFO L87 Difference]: Start difference. First operand 760 states and 1821 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:15,391 INFO L93 Difference]: Finished difference Result 1116 states and 2583 transitions. [2021-05-21 20:50:15,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-21 20:50:15,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:15,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:15,394 INFO L225 Difference]: With dead ends: 1116 [2021-05-21 20:50:15,394 INFO L226 Difference]: Without dead ends: 1017 [2021-05-21 20:50:15,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 62.2ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:50:15,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-05-21 20:50:15,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 769. [2021-05-21 20:50:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 2.40234375) internal successors, (1845), 768 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1845 transitions. [2021-05-21 20:50:15,408 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1845 transitions. Word has length 36 [2021-05-21 20:50:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:15,409 INFO L482 AbstractCegarLoop]: Abstraction has 769 states and 1845 transitions. [2021-05-21 20:50:15,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1845 transitions. [2021-05-21 20:50:15,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:15,410 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:15,410 INFO L521 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] [2021-05-21 20:50:15,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-21 20:50:15,410 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:15,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:15,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1290670540, now seen corresponding path program 14 times [2021-05-21 20:50:15,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:15,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969050452] [2021-05-21 20:50:15,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:15,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:15,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969050452] [2021-05-21 20:50:15,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969050452] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:15,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:15,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:15,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978900341] [2021-05-21 20:50:15,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:15,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:15,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:15,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:15,440 INFO L87 Difference]: Start difference. First operand 769 states and 1845 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:15,561 INFO L93 Difference]: Finished difference Result 1108 states and 2570 transitions. [2021-05-21 20:50:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-21 20:50:15,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:15,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:15,564 INFO L225 Difference]: With dead ends: 1108 [2021-05-21 20:50:15,564 INFO L226 Difference]: Without dead ends: 994 [2021-05-21 20:50:15,565 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 60.5ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:50:15,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-05-21 20:50:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 826. [2021-05-21 20:50:15,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 2.353939393939394) internal successors, (1942), 825 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1942 transitions. [2021-05-21 20:50:15,578 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1942 transitions. Word has length 36 [2021-05-21 20:50:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:15,579 INFO L482 AbstractCegarLoop]: Abstraction has 826 states and 1942 transitions. [2021-05-21 20:50:15,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1942 transitions. [2021-05-21 20:50:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:15,581 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:15,581 INFO L521 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] [2021-05-21 20:50:15,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-21 20:50:15,581 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:15,581 INFO L82 PathProgramCache]: Analyzing trace with hash 43920790, now seen corresponding path program 15 times [2021-05-21 20:50:15,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:15,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341750887] [2021-05-21 20:50:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:15,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:15,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341750887] [2021-05-21 20:50:15,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341750887] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:15,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:15,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:15,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721192471] [2021-05-21 20:50:15,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:15,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:15,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:15,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:15,623 INFO L87 Difference]: Start difference. First operand 826 states and 1942 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:15,712 INFO L93 Difference]: Finished difference Result 1089 states and 2514 transitions. [2021-05-21 20:50:15,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 20:50:15,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:15,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:15,715 INFO L225 Difference]: With dead ends: 1089 [2021-05-21 20:50:15,715 INFO L226 Difference]: Without dead ends: 918 [2021-05-21 20:50:15,717 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 44.8ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-05-21 20:50:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-05-21 20:50:15,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 751. [2021-05-21 20:50:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 2.3613333333333335) internal successors, (1771), 750 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1771 transitions. [2021-05-21 20:50:15,729 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1771 transitions. Word has length 36 [2021-05-21 20:50:15,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:15,729 INFO L482 AbstractCegarLoop]: Abstraction has 751 states and 1771 transitions. [2021-05-21 20:50:15,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1771 transitions. [2021-05-21 20:50:15,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:15,730 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:15,730 INFO L521 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] [2021-05-21 20:50:15,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-21 20:50:15,730 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:15,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:15,731 INFO L82 PathProgramCache]: Analyzing trace with hash 658153170, now seen corresponding path program 16 times [2021-05-21 20:50:15,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:15,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466261326] [2021-05-21 20:50:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:15,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:15,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466261326] [2021-05-21 20:50:15,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466261326] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:15,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:15,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:50:15,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343495323] [2021-05-21 20:50:15,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:50:15,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:15,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:50:15,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:50:15,769 INFO L87 Difference]: Start difference. First operand 751 states and 1771 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:15,891 INFO L93 Difference]: Finished difference Result 984 states and 2257 transitions. [2021-05-21 20:50:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-21 20:50:15,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:15,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:15,905 INFO L225 Difference]: With dead ends: 984 [2021-05-21 20:50:15,905 INFO L226 Difference]: Without dead ends: 893 [2021-05-21 20:50:15,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 64.4ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-05-21 20:50:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-05-21 20:50:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 687. [2021-05-21 20:50:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.3658892128279883) internal successors, (1623), 686 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1623 transitions. [2021-05-21 20:50:15,915 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1623 transitions. Word has length 36 [2021-05-21 20:50:15,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:15,916 INFO L482 AbstractCegarLoop]: Abstraction has 687 states and 1623 transitions. [2021-05-21 20:50:15,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1623 transitions. [2021-05-21 20:50:15,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:15,920 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:15,921 INFO L521 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] [2021-05-21 20:50:15,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-21 20:50:15,921 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:15,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:15,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1493977744, now seen corresponding path program 17 times [2021-05-21 20:50:15,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:15,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176548353] [2021-05-21 20:50:15,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:15,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:15,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176548353] [2021-05-21 20:50:15,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176548353] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:15,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:15,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:15,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243435751] [2021-05-21 20:50:15,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:15,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:15,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:15,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:15,958 INFO L87 Difference]: Start difference. First operand 687 states and 1623 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:16,089 INFO L93 Difference]: Finished difference Result 1072 states and 2458 transitions. [2021-05-21 20:50:16,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-21 20:50:16,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:16,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:16,091 INFO L225 Difference]: With dead ends: 1072 [2021-05-21 20:50:16,091 INFO L226 Difference]: Without dead ends: 1004 [2021-05-21 20:50:16,092 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-05-21 20:50:16,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-05-21 20:50:16,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 747. [2021-05-21 20:50:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 2.312332439678284) internal successors, (1725), 746 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1725 transitions. [2021-05-21 20:50:16,103 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1725 transitions. Word has length 36 [2021-05-21 20:50:16,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:16,103 INFO L482 AbstractCegarLoop]: Abstraction has 747 states and 1725 transitions. [2021-05-21 20:50:16,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,103 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1725 transitions. [2021-05-21 20:50:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:16,104 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:16,104 INFO L521 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] [2021-05-21 20:50:16,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-21 20:50:16,104 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:16,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:16,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1043005138, now seen corresponding path program 18 times [2021-05-21 20:50:16,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:16,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480182623] [2021-05-21 20:50:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:16,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:16,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480182623] [2021-05-21 20:50:16,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480182623] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:16,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:16,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:16,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559340724] [2021-05-21 20:50:16,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:16,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:16,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:16,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:16,135 INFO L87 Difference]: Start difference. First operand 747 states and 1725 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:16,265 INFO L93 Difference]: Finished difference Result 941 states and 2169 transitions. [2021-05-21 20:50:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-21 20:50:16,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:16,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:16,266 INFO L225 Difference]: With dead ends: 941 [2021-05-21 20:50:16,266 INFO L226 Difference]: Without dead ends: 787 [2021-05-21 20:50:16,266 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:50:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-05-21 20:50:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 685. [2021-05-21 20:50:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 2.3084795321637426) internal successors, (1579), 684 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1579 transitions. [2021-05-21 20:50:16,276 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1579 transitions. Word has length 36 [2021-05-21 20:50:16,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:16,277 INFO L482 AbstractCegarLoop]: Abstraction has 685 states and 1579 transitions. [2021-05-21 20:50:16,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1579 transitions. [2021-05-21 20:50:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:16,278 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:16,278 INFO L521 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] [2021-05-21 20:50:16,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-21 20:50:16,278 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:16,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:16,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1975445742, now seen corresponding path program 19 times [2021-05-21 20:50:16,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:16,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807356005] [2021-05-21 20:50:16,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:16,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:16,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807356005] [2021-05-21 20:50:16,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807356005] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:16,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:16,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:16,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964594656] [2021-05-21 20:50:16,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:16,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:16,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:16,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:16,306 INFO L87 Difference]: Start difference. First operand 685 states and 1579 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:16,419 INFO L93 Difference]: Finished difference Result 855 states and 1962 transitions. [2021-05-21 20:50:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-21 20:50:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:16,430 INFO L225 Difference]: With dead ends: 855 [2021-05-21 20:50:16,430 INFO L226 Difference]: Without dead ends: 722 [2021-05-21 20:50:16,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 57.5ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-05-21 20:50:16,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-05-21 20:50:16,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 625. [2021-05-21 20:50:16,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.315705128205128) internal successors, (1445), 624 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1445 transitions. [2021-05-21 20:50:16,438 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1445 transitions. Word has length 36 [2021-05-21 20:50:16,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:16,438 INFO L482 AbstractCegarLoop]: Abstraction has 625 states and 1445 transitions. [2021-05-21 20:50:16,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,438 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1445 transitions. [2021-05-21 20:50:16,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:16,439 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:16,439 INFO L521 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] [2021-05-21 20:50:16,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-21 20:50:16,439 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:16,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:16,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1605414732, now seen corresponding path program 20 times [2021-05-21 20:50:16,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:16,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226032891] [2021-05-21 20:50:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:16,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:16,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226032891] [2021-05-21 20:50:16,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226032891] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:16,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:16,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:50:16,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768314738] [2021-05-21 20:50:16,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:50:16,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:16,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:50:16,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:50:16,471 INFO L87 Difference]: Start difference. First operand 625 states and 1445 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:16,604 INFO L93 Difference]: Finished difference Result 810 states and 1861 transitions. [2021-05-21 20:50:16,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 20:50:16,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:16,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:16,606 INFO L225 Difference]: With dead ends: 810 [2021-05-21 20:50:16,606 INFO L226 Difference]: Without dead ends: 761 [2021-05-21 20:50:16,606 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 65.0ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-05-21 20:50:16,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-05-21 20:50:16,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 631. [2021-05-21 20:50:16,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 2.3142857142857145) internal successors, (1458), 630 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1458 transitions. [2021-05-21 20:50:16,614 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1458 transitions. Word has length 36 [2021-05-21 20:50:16,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:16,614 INFO L482 AbstractCegarLoop]: Abstraction has 631 states and 1458 transitions. [2021-05-21 20:50:16,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,614 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1458 transitions. [2021-05-21 20:50:16,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:16,615 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:16,615 INFO L521 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] [2021-05-21 20:50:16,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-21 20:50:16,615 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:16,615 INFO L82 PathProgramCache]: Analyzing trace with hash 578791080, now seen corresponding path program 21 times [2021-05-21 20:50:16,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:16,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624740737] [2021-05-21 20:50:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:16,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:16,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624740737] [2021-05-21 20:50:16,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624740737] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:16,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:16,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:16,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751085775] [2021-05-21 20:50:16,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:16,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:16,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:16,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:16,639 INFO L87 Difference]: Start difference. First operand 631 states and 1458 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:16,697 INFO L93 Difference]: Finished difference Result 760 states and 1753 transitions. [2021-05-21 20:50:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:50:16,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:16,699 INFO L225 Difference]: With dead ends: 760 [2021-05-21 20:50:16,699 INFO L226 Difference]: Without dead ends: 588 [2021-05-21 20:50:16,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:50:16,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-05-21 20:50:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 521. [2021-05-21 20:50:16,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.3134615384615387) internal successors, (1203), 520 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1203 transitions. [2021-05-21 20:50:16,706 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1203 transitions. Word has length 36 [2021-05-21 20:50:16,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:16,706 INFO L482 AbstractCegarLoop]: Abstraction has 521 states and 1203 transitions. [2021-05-21 20:50:16,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1203 transitions. [2021-05-21 20:50:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:16,707 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:16,707 INFO L521 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] [2021-05-21 20:50:16,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-21 20:50:16,707 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:16,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:16,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1889566906, now seen corresponding path program 22 times [2021-05-21 20:50:16,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:16,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360377602] [2021-05-21 20:50:16,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:16,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:16,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360377602] [2021-05-21 20:50:16,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360377602] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:16,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:16,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:50:16,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867394161] [2021-05-21 20:50:16,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:50:16,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:16,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:50:16,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:50:16,737 INFO L87 Difference]: Start difference. First operand 521 states and 1203 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:16,856 INFO L93 Difference]: Finished difference Result 699 states and 1564 transitions. [2021-05-21 20:50:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-21 20:50:16,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:16,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:16,857 INFO L225 Difference]: With dead ends: 699 [2021-05-21 20:50:16,857 INFO L226 Difference]: Without dead ends: 598 [2021-05-21 20:50:16,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 67.5ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-05-21 20:50:16,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-05-21 20:50:16,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 434. [2021-05-21 20:50:16,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.325635103926097) internal successors, (1007), 433 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1007 transitions. [2021-05-21 20:50:16,863 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1007 transitions. Word has length 36 [2021-05-21 20:50:16,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:16,863 INFO L482 AbstractCegarLoop]: Abstraction has 434 states and 1007 transitions. [2021-05-21 20:50:16,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:16,863 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1007 transitions. [2021-05-21 20:50:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:16,864 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:16,864 INFO L521 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] [2021-05-21 20:50:16,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-21 20:50:16,864 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:16,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1799608796, now seen corresponding path program 23 times [2021-05-21 20:50:16,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:16,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711921235] [2021-05-21 20:50:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:16,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:16,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711921235] [2021-05-21 20:50:16,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711921235] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:16,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:16,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:50:16,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292015003] [2021-05-21 20:50:16,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:50:16,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:16,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:50:16,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:50:16,901 INFO L87 Difference]: Start difference. First operand 434 states and 1007 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:17,016 INFO L93 Difference]: Finished difference Result 598 states and 1372 transitions. [2021-05-21 20:50:17,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 20:50:17,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:17,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:17,017 INFO L225 Difference]: With dead ends: 598 [2021-05-21 20:50:17,017 INFO L226 Difference]: Without dead ends: 546 [2021-05-21 20:50:17,017 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 66.5ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-05-21 20:50:17,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-05-21 20:50:17,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 441. [2021-05-21 20:50:17,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 2.3227272727272728) internal successors, (1022), 440 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1022 transitions. [2021-05-21 20:50:17,023 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1022 transitions. Word has length 36 [2021-05-21 20:50:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:17,023 INFO L482 AbstractCegarLoop]: Abstraction has 441 states and 1022 transitions. [2021-05-21 20:50:17,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1022 transitions. [2021-05-21 20:50:17,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:17,024 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:17,024 INFO L521 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] [2021-05-21 20:50:17,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-21 20:50:17,024 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:17,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:17,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1002873044, now seen corresponding path program 24 times [2021-05-21 20:50:17,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:17,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286368400] [2021-05-21 20:50:17,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:17,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:17,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286368400] [2021-05-21 20:50:17,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286368400] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:17,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:17,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:50:17,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746452473] [2021-05-21 20:50:17,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:17,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:17,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:17,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:17,063 INFO L87 Difference]: Start difference. First operand 441 states and 1022 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:17,126 INFO L93 Difference]: Finished difference Result 542 states and 1249 transitions. [2021-05-21 20:50:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:50:17,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:17,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:17,127 INFO L225 Difference]: With dead ends: 542 [2021-05-21 20:50:17,127 INFO L226 Difference]: Without dead ends: 381 [2021-05-21 20:50:17,127 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 33.5ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:50:17,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-05-21 20:50:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 342. [2021-05-21 20:50:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.346041055718475) internal successors, (800), 341 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 800 transitions. [2021-05-21 20:50:17,131 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 800 transitions. Word has length 36 [2021-05-21 20:50:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:17,132 INFO L482 AbstractCegarLoop]: Abstraction has 342 states and 800 transitions. [2021-05-21 20:50:17,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 800 transitions. [2021-05-21 20:50:17,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:17,132 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:17,132 INFO L521 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] [2021-05-21 20:50:17,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-21 20:50:17,132 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:17,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1626416734, now seen corresponding path program 25 times [2021-05-21 20:50:17,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:17,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104846027] [2021-05-21 20:50:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:17,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:17,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:17,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104846027] [2021-05-21 20:50:17,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104846027] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:17,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:17,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:50:17,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263782934] [2021-05-21 20:50:17,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:50:17,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:17,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:50:17,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:50:17,198 INFO L87 Difference]: Start difference. First operand 342 states and 800 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:17,301 INFO L93 Difference]: Finished difference Result 452 states and 1058 transitions. [2021-05-21 20:50:17,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:50:17,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:17,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:17,303 INFO L225 Difference]: With dead ends: 452 [2021-05-21 20:50:17,303 INFO L226 Difference]: Without dead ends: 432 [2021-05-21 20:50:17,304 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 101.2ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-05-21 20:50:17,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-05-21 20:50:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 377. [2021-05-21 20:50:17,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3351063829787235) internal successors, (878), 376 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 878 transitions. [2021-05-21 20:50:17,308 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 878 transitions. Word has length 36 [2021-05-21 20:50:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:17,309 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 878 transitions. [2021-05-21 20:50:17,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,309 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 878 transitions. [2021-05-21 20:50:17,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:17,310 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:17,311 INFO L521 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] [2021-05-21 20:50:17,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-21 20:50:17,311 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:17,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:17,311 INFO L82 PathProgramCache]: Analyzing trace with hash 610360926, now seen corresponding path program 26 times [2021-05-21 20:50:17,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:17,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224137781] [2021-05-21 20:50:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:17,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:17,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224137781] [2021-05-21 20:50:17,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224137781] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:17,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:17,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:50:17,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986944631] [2021-05-21 20:50:17,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:50:17,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:17,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:50:17,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:50:17,360 INFO L87 Difference]: Start difference. First operand 377 states and 878 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:17,428 INFO L93 Difference]: Finished difference Result 397 states and 914 transitions. [2021-05-21 20:50:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:50:17,428 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:17,429 INFO L225 Difference]: With dead ends: 397 [2021-05-21 20:50:17,429 INFO L226 Difference]: Without dead ends: 332 [2021-05-21 20:50:17,429 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-05-21 20:50:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-05-21 20:50:17,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-05-21 20:50:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.3323262839879155) internal successors, (772), 331 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 772 transitions. [2021-05-21 20:50:17,433 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 772 transitions. Word has length 36 [2021-05-21 20:50:17,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:17,433 INFO L482 AbstractCegarLoop]: Abstraction has 332 states and 772 transitions. [2021-05-21 20:50:17,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 772 transitions. [2021-05-21 20:50:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:17,433 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:17,433 INFO L521 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] [2021-05-21 20:50:17,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-21 20:50:17,433 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:17,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:17,434 INFO L82 PathProgramCache]: Analyzing trace with hash -777524160, now seen corresponding path program 27 times [2021-05-21 20:50:17,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:17,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944403064] [2021-05-21 20:50:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:17,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:17,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944403064] [2021-05-21 20:50:17,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944403064] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:17,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:17,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:50:17,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867350781] [2021-05-21 20:50:17,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:50:17,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:17,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:50:17,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:50:17,478 INFO L87 Difference]: Start difference. First operand 332 states and 772 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:17,546 INFO L93 Difference]: Finished difference Result 472 states and 1099 transitions. [2021-05-21 20:50:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:50:17,546 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:17,547 INFO L225 Difference]: With dead ends: 472 [2021-05-21 20:50:17,547 INFO L226 Difference]: Without dead ends: 452 [2021-05-21 20:50:17,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 74.5ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-05-21 20:50:17,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-05-21 20:50:17,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 377. [2021-05-21 20:50:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.3218085106382977) internal successors, (873), 376 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 873 transitions. [2021-05-21 20:50:17,551 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 873 transitions. Word has length 36 [2021-05-21 20:50:17,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:17,551 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 873 transitions. [2021-05-21 20:50:17,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,551 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 873 transitions. [2021-05-21 20:50:17,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:17,552 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:17,552 INFO L521 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] [2021-05-21 20:50:17,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-21 20:50:17,552 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:17,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1793579968, now seen corresponding path program 28 times [2021-05-21 20:50:17,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:17,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60882104] [2021-05-21 20:50:17,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:17,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:17,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60882104] [2021-05-21 20:50:17,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60882104] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:17,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:17,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:50:17,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633835821] [2021-05-21 20:50:17,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:50:17,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:17,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:50:17,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:50:17,604 INFO L87 Difference]: Start difference. First operand 377 states and 873 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:17,697 INFO L93 Difference]: Finished difference Result 397 states and 909 transitions. [2021-05-21 20:50:17,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:50:17,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:17,698 INFO L225 Difference]: With dead ends: 397 [2021-05-21 20:50:17,698 INFO L226 Difference]: Without dead ends: 327 [2021-05-21 20:50:17,698 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-05-21 20:50:17,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-05-21 20:50:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-05-21 20:50:17,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 2.3251533742331287) internal successors, (758), 326 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 758 transitions. [2021-05-21 20:50:17,702 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 758 transitions. Word has length 36 [2021-05-21 20:50:17,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:17,702 INFO L482 AbstractCegarLoop]: Abstraction has 327 states and 758 transitions. [2021-05-21 20:50:17,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 758 transitions. [2021-05-21 20:50:17,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-21 20:50:17,702 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:50:17,702 INFO L521 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] [2021-05-21 20:50:17,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-21 20:50:17,703 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:50:17,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:50:17,703 INFO L82 PathProgramCache]: Analyzing trace with hash -2007695822, now seen corresponding path program 29 times [2021-05-21 20:50:17,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:50:17,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929847936] [2021-05-21 20:50:17,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:50:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:50:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:50:17,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:50:17,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929847936] [2021-05-21 20:50:17,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929847936] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:50:17,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:50:17,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:50:17,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080734198] [2021-05-21 20:50:17,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 20:50:17,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:50:17,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 20:50:17,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-21 20:50:17,729 INFO L87 Difference]: Start difference. First operand 327 states and 758 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:50:17,759 INFO L93 Difference]: Finished difference Result 189 states and 426 transitions. [2021-05-21 20:50:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 20:50:17,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-05-21 20:50:17,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:50:17,760 INFO L225 Difference]: With dead ends: 189 [2021-05-21 20:50:17,760 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 20:50:17,760 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:50:17,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 20:50:17,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 20:50:17,760 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) [2021-05-21 20:50:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 20:50:17,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-05-21 20:50:17,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:50:17,760 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 20:50:17,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:50:17,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 20:50:17,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 20:50:17,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-21 20:50:17,762 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 20:50:17,764 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 08:50:17 BasicIcfg [2021-05-21 20:50:17,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 20:50:17,764 INFO L168 Benchmark]: Toolchain (without parser) took 5461.94 ms. Allocated memory was 343.9 MB in the beginning and 465.6 MB in the end (delta: 121.6 MB). Free memory was 323.4 MB in the beginning and 293.2 MB in the end (delta: 30.2 MB). Peak memory consumption was 155.0 MB. Max. memory is 16.0 GB. [2021-05-21 20:50:17,764 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 343.9 MB. Free memory is still 324.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 20:50:17,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.26 ms. Allocated memory is still 343.9 MB. Free memory was 323.4 MB in the beginning and 321.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 20:50:17,764 INFO L168 Benchmark]: Boogie Preprocessor took 9.79 ms. Allocated memory is still 343.9 MB. Free memory was 321.9 MB in the beginning and 320.9 MB in the end (delta: 930.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 20:50:17,764 INFO L168 Benchmark]: RCFGBuilder took 191.49 ms. Allocated memory is still 343.9 MB. Free memory was 320.9 MB in the beginning and 308.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-05-21 20:50:17,764 INFO L168 Benchmark]: TraceAbstraction took 5231.91 ms. Allocated memory was 343.9 MB in the beginning and 465.6 MB in the end (delta: 121.6 MB). Free memory was 308.0 MB in the beginning and 293.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 138.2 MB. Max. memory is 16.0 GB. [2021-05-21 20:50:17,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 343.9 MB. Free memory is still 324.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.26 ms. Allocated memory is still 343.9 MB. Free memory was 323.4 MB in the beginning and 321.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.79 ms. Allocated memory is still 343.9 MB. Free memory was 321.9 MB in the beginning and 320.9 MB in the end (delta: 930.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 191.49 ms. Allocated memory is still 343.9 MB. Free memory was 320.9 MB in the beginning and 308.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5231.91 ms. Allocated memory was 343.9 MB in the beginning and 465.6 MB in the end (delta: 121.6 MB). Free memory was 308.0 MB in the beginning and 293.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 138.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 71 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5112.7ms, OverallIterations: 29, TraceHistogramMax: 1, EmptinessCheckTime: 50.6ms, AutomataDifference: 3088.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 69.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2558 SDtfs, 3423 SDslu, 8384 SDs, 0 SdLazy, 2986 SolverSat, 373 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1128.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 411 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1846.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=854occurred in iteration=7, InterpolantAutomatonStates: 337, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 419.3ms AutomataMinimizationTime, 29 MinimizatonAttempts, 6894 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.5ms SsaConstructionTime, 94.5ms SatisfiabilityAnalysisTime, 1165.3ms InterpolantComputationTime, 1044 NumberOfCodeBlocks, 1044 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1015 ConstructedInterpolants, 0 QuantifiedInterpolants, 3663 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 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...