/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 23:01:57,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 23:01:57,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 23:01:57,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 23:01:57,662 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-Delay.epf [2021-07-09 23:01:57,702 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 23:01:57,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 23:01:57,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 23:01:57,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 23:01:57,705 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 23:01:57,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 23:01:57,706 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 23:01:57,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 23:01:57,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 23:01:57,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 23:01:57,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 23:01:57,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 23:01:57,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 23:01:57,708 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 23:01:57,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 23:01:57,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 23:01:57,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 23:01:57,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 23:01:57,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 23:01:57,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 23:01:57,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 23:01:57,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:01:57,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 23:01:57,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 23:01:57,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 23:01:57,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 23:01:57,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 23:01:57,710 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 23:01:57,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 23:01:57,710 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 23:01:57,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 23:01:58,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 23:01:58,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 23:01:58,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 23:01:58,069 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 23:01:58,070 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 23:01:58,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-07-09 23:01:58,071 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-07-09 23:01:58,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 23:01:58,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 23:01:58,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 23:01:58,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 23:01:58,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 23:01:58,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:58" (1/1) ... [2021-07-09 23:01:58,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:58" (1/1) ... [2021-07-09 23:01:58,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 23:01:58,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 23:01:58,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 23:01:58,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 23:01:58,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:58" (1/1) ... [2021-07-09 23:01:58,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:58" (1/1) ... [2021-07-09 23:01:58,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:58" (1/1) ... [2021-07-09 23:01:58,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:58" (1/1) ... [2021-07-09 23:01:58,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:58" (1/1) ... [2021-07-09 23:01:58,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:58" (1/1) ... [2021-07-09 23:01:58,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:58" (1/1) ... [2021-07-09 23:01:58,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 23:01:58,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 23:01:58,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 23:01:58,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 23:01:58,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:01:58,210 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 23:01:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 23:01:58,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 23:01:58,211 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 23:01:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 23:01:58,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 23:01:58,211 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 23:01:58,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 23:01:58,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 23:01:58,213 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 23:01:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 23:01:58,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 23:01:58,214 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 23:01:58,379 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 23:01:58,379 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 23:01:58,381 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:01:58 BoogieIcfgContainer [2021-07-09 23:01:58,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 23:01:58,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 23:01:58,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 23:01:58,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 23:01:58,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:01:58" (1/2) ... [2021-07-09 23:01:58,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6767d49 and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 11:01:58, skipping insertion in model container [2021-07-09 23:01:58,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:01:58" (2/2) ... [2021-07-09 23:01:58,388 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-07-09 23:01:58,393 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 23:01:58,393 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 23:01:58,393 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 23:01:58,394 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 23:01:58,432 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-09 23:01:58,452 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 23:01:58,469 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 23:01:58,469 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 23:01:58,469 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 23:01:58,469 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 23:01:58,469 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 23:01:58,469 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 23:01:58,470 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 23:01:58,470 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 23:01:58,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 673 states, 507 states have (on average 1.5502958579881656) internal successors, (786), 672 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:58,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 23:01:58,861 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:58,862 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:58,862 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:58,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:58,867 INFO L82 PathProgramCache]: Analyzing trace with hash 824825468, now seen corresponding path program 1 times [2021-07-09 23:01:58,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:58,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993740713] [2021-07-09 23:01:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:59,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:59,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:59,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:01:59,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:01:59,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:59,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:01:59,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:59,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:59,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:59,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993740713] [2021-07-09 23:01:59,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993740713] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:59,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:59,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:01:59,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751007792] [2021-07-09 23:01:59,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:01:59,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:59,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:01:59,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:01:59,134 INFO L87 Difference]: Start difference. First operand has 673 states, 507 states have (on average 1.5502958579881656) internal successors, (786), 672 states have internal predecessors, (786), 0 states have call successors, (0), 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) [2021-07-09 23:01:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:59,339 INFO L93 Difference]: Finished difference Result 805 states and 954 transitions. [2021-07-09 23:01:59,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:01:59,341 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 [2021-07-09 23:01:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:59,353 INFO L225 Difference]: With dead ends: 805 [2021-07-09 23:01:59,353 INFO L226 Difference]: Without dead ends: 122 [2021-07-09 23:01:59,356 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 83.8ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:01:59,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-07-09 23:01:59,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2021-07-09 23:01:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.4854368932038835) internal successors, (153), 103 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:59,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 153 transitions. [2021-07-09 23:01:59,391 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 153 transitions. Word has length 36 [2021-07-09 23:01:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:59,391 INFO L482 AbstractCegarLoop]: Abstraction has 104 states and 153 transitions. [2021-07-09 23:01:59,391 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) [2021-07-09 23:01:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 153 transitions. [2021-07-09 23:01:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 23:01:59,393 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:59,393 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:59,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 23:01:59,393 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:59,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:59,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1530593600, now seen corresponding path program 2 times [2021-07-09 23:01:59,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:59,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394934569] [2021-07-09 23:01:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:59,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:59,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:59,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:01:59,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:01:59,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:59,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:01:59,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:59,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:59,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:59,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394934569] [2021-07-09 23:01:59,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394934569] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:59,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:59,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:01:59,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178478592] [2021-07-09 23:01:59,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:01:59,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:59,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:01:59,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:01:59,494 INFO L87 Difference]: Start difference. First operand 104 states and 153 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) [2021-07-09 23:01:59,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:59,598 INFO L93 Difference]: Finished difference Result 128 states and 182 transitions. [2021-07-09 23:01:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:01:59,599 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 [2021-07-09 23:01:59,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:59,600 INFO L225 Difference]: With dead ends: 128 [2021-07-09 23:01:59,600 INFO L226 Difference]: Without dead ends: 91 [2021-07-09 23:01:59,601 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:01:59,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-07-09 23:01:59,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2021-07-09 23:01:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 82 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 114 transitions. [2021-07-09 23:01:59,606 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 114 transitions. Word has length 36 [2021-07-09 23:01:59,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:59,607 INFO L482 AbstractCegarLoop]: Abstraction has 83 states and 114 transitions. [2021-07-09 23:01:59,607 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) [2021-07-09 23:01:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 114 transitions. [2021-07-09 23:01:59,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 23:01:59,608 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:59,608 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:59,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 23:01:59,608 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:59,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:59,609 INFO L82 PathProgramCache]: Analyzing trace with hash -952146608, now seen corresponding path program 3 times [2021-07-09 23:01:59,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:59,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196663564] [2021-07-09 23:01:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:59,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:59,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:59,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:59,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:59,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:59,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:01:59,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:59,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:59,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196663564] [2021-07-09 23:01:59,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196663564] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:59,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:59,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:01:59,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781001243] [2021-07-09 23:01:59,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:01:59,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:59,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:01:59,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:01:59,701 INFO L87 Difference]: Start difference. First operand 83 states and 114 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) [2021-07-09 23:01:59,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:59,800 INFO L93 Difference]: Finished difference Result 156 states and 217 transitions. [2021-07-09 23:01:59,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:01:59,800 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 [2021-07-09 23:01:59,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:59,801 INFO L225 Difference]: With dead ends: 156 [2021-07-09 23:01:59,802 INFO L226 Difference]: Without dead ends: 130 [2021-07-09 23:01:59,802 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 74.7ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:01:59,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-07-09 23:01:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 73. [2021-07-09 23:01:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 72 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2021-07-09 23:01:59,809 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 36 [2021-07-09 23:01:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:59,809 INFO L482 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2021-07-09 23:01:59,810 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) [2021-07-09 23:01:59,810 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2021-07-09 23:01:59,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 23:01:59,810 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:59,811 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:59,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 23:01:59,811 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:59,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:59,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1222420366, now seen corresponding path program 4 times [2021-07-09 23:01:59,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:59,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561295400] [2021-07-09 23:01:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:59,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:59,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:59,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:59,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:59,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561295400] [2021-07-09 23:01:59,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561295400] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:59,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:59,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:01:59,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386217995] [2021-07-09 23:01:59,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:01:59,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:59,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:01:59,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:59,833 INFO L87 Difference]: Start difference. First operand 73 states and 101 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) [2021-07-09 23:01:59,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:59,837 INFO L93 Difference]: Finished difference Result 69 states and 93 transitions. [2021-07-09 23:01:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:01:59,838 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 [2021-07-09 23:01:59,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:59,839 INFO L225 Difference]: With dead ends: 69 [2021-07-09 23:01:59,839 INFO L226 Difference]: Without dead ends: 67 [2021-07-09 23:01:59,839 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-07-09 23:01:59,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-07-09 23:01:59,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.378787878787879) internal successors, (91), 66 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2021-07-09 23:01:59,844 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 36 [2021-07-09 23:01:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:59,844 INFO L482 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2021-07-09 23:01:59,844 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) [2021-07-09 23:01:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2021-07-09 23:01:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 23:01:59,845 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:59,845 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:59,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 23:01:59,845 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:59,846 INFO L82 PathProgramCache]: Analyzing trace with hash 30369694, now seen corresponding path program 5 times [2021-07-09 23:01:59,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:59,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495162745] [2021-07-09 23:01:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:59,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:59,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:59,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:59,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:59,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495162745] [2021-07-09 23:01:59,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495162745] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:59,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:59,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:01:59,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343070831] [2021-07-09 23:01:59,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:01:59,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:59,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:01:59,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:59,869 INFO L87 Difference]: Start difference. First operand 67 states and 91 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) [2021-07-09 23:01:59,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:59,872 INFO L93 Difference]: Finished difference Result 67 states and 89 transitions. [2021-07-09 23:01:59,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:01:59,873 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 [2021-07-09 23:01:59,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:59,873 INFO L225 Difference]: With dead ends: 67 [2021-07-09 23:01:59,874 INFO L226 Difference]: Without dead ends: 67 [2021-07-09 23:01:59,874 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:01:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-07-09 23:01:59,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-07-09 23:01:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2021-07-09 23:01:59,878 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 36 [2021-07-09 23:01:59,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:59,878 INFO L482 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2021-07-09 23:01:59,878 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) [2021-07-09 23:01:59,878 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2021-07-09 23:01:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 23:01:59,879 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:59,879 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:59,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 23:01:59,879 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:59,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:59,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1575395886, now seen corresponding path program 6 times [2021-07-09 23:01:59,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:59,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425407923] [2021-07-09 23:01:59,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:59,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:59,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:59,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:59,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:59,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:59,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:59,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:59,962 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-07-09 23:01:59,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:01:59,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:59,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:59,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:59,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425407923] [2021-07-09 23:01:59,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425407923] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:59,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:59,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:01:59,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949542957] [2021-07-09 23:01:59,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:01:59,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:59,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:01:59,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:01:59,977 INFO L87 Difference]: Start difference. First operand 67 states and 89 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) [2021-07-09 23:02:00,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:02:00,087 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2021-07-09 23:02:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:02:00,088 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 [2021-07-09 23:02:00,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:02:00,090 INFO L225 Difference]: With dead ends: 85 [2021-07-09 23:02:00,090 INFO L226 Difference]: Without dead ends: 81 [2021-07-09 23:02:00,091 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-09 23:02:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-07-09 23:02:00,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2021-07-09 23:02:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 72 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2021-07-09 23:02:00,096 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 36 [2021-07-09 23:02:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:02:00,096 INFO L482 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2021-07-09 23:02:00,096 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) [2021-07-09 23:02:00,097 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2021-07-09 23:02:00,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 23:02:00,097 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:02:00,097 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:02:00,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 23:02:00,098 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:02:00,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:02:00,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1108645330, now seen corresponding path program 7 times [2021-07-09 23:02:00,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:02:00,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030613526] [2021-07-09 23:02:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:02:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:02:00,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:00,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:00,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:02:00,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:02:00,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:02:00,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030613526] [2021-07-09 23:02:00,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030613526] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:02:00,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:02:00,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:02:00,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146888374] [2021-07-09 23:02:00,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:02:00,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:02:00,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:02:00,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:02:00,253 INFO L87 Difference]: Start difference. First operand 73 states and 97 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) [2021-07-09 23:02:00,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:02:00,363 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2021-07-09 23:02:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:02:00,364 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 [2021-07-09 23:02:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:02:00,366 INFO L225 Difference]: With dead ends: 75 [2021-07-09 23:02:00,366 INFO L226 Difference]: Without dead ends: 66 [2021-07-09 23:02:00,366 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-09 23:02:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-07-09 23:02:00,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-07-09 23:02:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 65 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2021-07-09 23:02:00,382 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 36 [2021-07-09 23:02:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:02:00,383 INFO L482 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2021-07-09 23:02:00,386 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) [2021-07-09 23:02:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2021-07-09 23:02:00,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 23:02:00,386 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:02:00,387 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:02:00,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 23:02:00,389 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:02:00,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:02:00,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1808206338, now seen corresponding path program 8 times [2021-07-09 23:02:00,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:02:00,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041218284] [2021-07-09 23:02:00,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:02:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:02:00,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:00,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:00,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:02:00,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:02:00,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041218284] [2021-07-09 23:02:00,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041218284] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:02:00,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:02:00,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:02:00,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315849913] [2021-07-09 23:02:00,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:02:00,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:02:00,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:02:00,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:02:00,506 INFO L87 Difference]: Start difference. First operand 66 states and 87 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) [2021-07-09 23:02:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:02:00,625 INFO L93 Difference]: Finished difference Result 88 states and 118 transitions. [2021-07-09 23:02:00,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:02:00,626 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 [2021-07-09 23:02:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:02:00,627 INFO L225 Difference]: With dead ends: 88 [2021-07-09 23:02:00,627 INFO L226 Difference]: Without dead ends: 84 [2021-07-09 23:02:00,627 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.0ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-07-09 23:02:00,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-07-09 23:02:00,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2021-07-09 23:02:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:00,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2021-07-09 23:02:00,630 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 36 [2021-07-09 23:02:00,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:02:00,630 INFO L482 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2021-07-09 23:02:00,630 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) [2021-07-09 23:02:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2021-07-09 23:02:00,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 23:02:00,631 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:02:00,631 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:02:00,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 23:02:00,631 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:02:00,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:02:00,632 INFO L82 PathProgramCache]: Analyzing trace with hash -875834878, now seen corresponding path program 9 times [2021-07-09 23:02:00,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:02:00,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700194794] [2021-07-09 23:02:00,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:02:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:02:00,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:00,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:00,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,704 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-07-09 23:02:00,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:02:00,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:02:00,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700194794] [2021-07-09 23:02:00,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700194794] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:02:00,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:02:00,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:02:00,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097525050] [2021-07-09 23:02:00,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:02:00,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:02:00,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:02:00,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:02:00,718 INFO L87 Difference]: Start difference. First operand 74 states and 98 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) [2021-07-09 23:02:00,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:02:00,815 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2021-07-09 23:02:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:02:00,815 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 [2021-07-09 23:02:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:02:00,816 INFO L225 Difference]: With dead ends: 76 [2021-07-09 23:02:00,816 INFO L226 Difference]: Without dead ends: 64 [2021-07-09 23:02:00,816 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.4ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-07-09 23:02:00,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-07-09 23:02:00,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-07-09 23:02:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 63 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:00,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2021-07-09 23:02:00,819 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 36 [2021-07-09 23:02:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:02:00,819 INFO L482 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2021-07-09 23:02:00,819 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) [2021-07-09 23:02:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2021-07-09 23:02:00,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 23:02:00,820 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:02:00,820 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:02:00,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 23:02:00,820 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:02:00,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:02:00,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1260770848, now seen corresponding path program 10 times [2021-07-09 23:02:00,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:02:00,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211609964] [2021-07-09 23:02:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:02:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:02:00,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:00,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:00,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:00,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:02:00,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:02:00,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:02:00,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:02:00,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:02:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:02:00,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:02:00,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211609964] [2021-07-09 23:02:00,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211609964] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:02:00,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:02:00,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:02:00,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851008119] [2021-07-09 23:02:00,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:02:00,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:02:00,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:02:00,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:02:00,868 INFO L87 Difference]: Start difference. First operand 64 states and 84 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) [2021-07-09 23:02:00,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:02:00,913 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2021-07-09 23:02:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 23:02:00,913 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 [2021-07-09 23:02:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:02:00,914 INFO L225 Difference]: With dead ends: 39 [2021-07-09 23:02:00,914 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 23:02:00,914 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:02:00,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 23:02:00,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 23:02:00,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:02:00,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 23:02:00,915 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-07-09 23:02:00,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:02:00,915 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 23:02:00,915 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) [2021-07-09 23:02:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 23:02:00,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 23:02:00,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 23:02:00,917 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 23:02:00,919 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 11:02:00 BasicIcfg [2021-07-09 23:02:00,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 23:02:00,920 INFO L168 Benchmark]: Toolchain (without parser) took 2822.58 ms. Allocated memory was 181.4 MB in the beginning and 222.3 MB in the end (delta: 40.9 MB). Free memory was 160.8 MB in the beginning and 82.1 MB in the end (delta: 78.7 MB). Peak memory consumption was 119.1 MB. Max. memory is 8.0 GB. [2021-07-09 23:02:00,920 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 181.4 MB. Free memory is still 161.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 23:02:00,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.15 ms. Allocated memory is still 181.4 MB. Free memory was 160.7 MB in the beginning and 159.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 23:02:00,920 INFO L168 Benchmark]: Boogie Preprocessor took 14.73 ms. Allocated memory is still 181.4 MB. Free memory was 159.3 MB in the beginning and 158.4 MB in the end (delta: 876.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 23:02:00,921 INFO L168 Benchmark]: RCFGBuilder took 243.44 ms. Allocated memory is still 181.4 MB. Free memory was 158.3 MB in the beginning and 145.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-09 23:02:00,921 INFO L168 Benchmark]: TraceAbstraction took 2536.12 ms. Allocated memory was 181.4 MB in the beginning and 222.3 MB in the end (delta: 40.9 MB). Free memory was 145.4 MB in the beginning and 82.1 MB in the end (delta: 63.3 MB). Peak memory consumption was 103.3 MB. Max. memory is 8.0 GB. [2021-07-09 23:02:00,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 181.4 MB. Free memory is still 161.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.15 ms. Allocated memory is still 181.4 MB. Free memory was 160.7 MB in the beginning and 159.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.73 ms. Allocated memory is still 181.4 MB. Free memory was 159.3 MB in the beginning and 158.4 MB in the end (delta: 876.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 243.44 ms. Allocated memory is still 181.4 MB. Free memory was 158.3 MB in the beginning and 145.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2536.12 ms. Allocated memory was 181.4 MB in the beginning and 222.3 MB in the end (delta: 40.9 MB). Free memory was 145.4 MB in the beginning and 82.1 MB in the end (delta: 63.3 MB). Peak memory consumption was 103.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1123, positive: 1099, positive conditional: 1099, positive unconditional: 0, negative: 24, negative conditional: 24, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1123, positive: 1099, positive conditional: 0, positive unconditional: 1099, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 206, positive: 194, positive conditional: 0, positive unconditional: 194, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 206, positive: 191, positive conditional: 0, positive unconditional: 191, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 94, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1123, positive: 905, positive conditional: 0, positive unconditional: 905, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 206, unknown conditional: 0, unknown unconditional: 206] , Statistics on independence cache: Total cache size (in pairs): 206, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Independence queries for same thread: 0 - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 71 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2449.3ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 38.2ms, AutomataDifference: 960.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 358.6ms, PartialOrderReductionTime: 344.2ms, HoareTripleCheckerStatistics: 397 SDtfs, 689 SDslu, 995 SDs, 0 SdLazy, 383 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 269.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 758.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=673occurred in iteration=0, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 68.2ms AutomataMinimizationTime, 10 MinimizatonAttempts, 101 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.9ms SsaConstructionTime, 77.6ms SatisfiabilityAnalysisTime, 713.7ms InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 1066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...