/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/test/easy6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 00:03:51,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 00:03:51,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 00:03:51,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 00:03:51,866 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 [2021-07-10 00:03:51,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 00:03:51,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 00:03:51,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 00:03:51,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 00:03:51,906 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 00:03:51,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 00:03:51,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 00:03:51,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 00:03:51,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 00:03:51,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 00:03:51,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 00:03:51,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 00:03:51,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 00:03:51,907 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 00:03:51,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 00:03:51,908 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 00:03:51,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 00:03:51,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 00:03:51,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 00:03:51,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 00:03:51,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 00:03:51,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 00:03:51,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 00:03:51,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 00:03:51,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 00:03:51,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 00:03:51,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 00:03:51,909 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 00:03:51,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 00:03:51,909 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-10 00:03:51,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 00:03:52,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 00:03:52,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 00:03:52,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 00:03:52,163 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 00:03:52,164 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 00:03:52,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl [2021-07-10 00:03:52,165 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl' [2021-07-10 00:03:52,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 00:03:52,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 00:03:52,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 00:03:52,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 00:03:52,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 00:03:52,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:03:52" (1/1) ... [2021-07-10 00:03:52,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:03:52" (1/1) ... [2021-07-10 00:03:52,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 00:03:52,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 00:03:52,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 00:03:52,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 00:03:52,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:03:52" (1/1) ... [2021-07-10 00:03:52,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:03:52" (1/1) ... [2021-07-10 00:03:52,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:03:52" (1/1) ... [2021-07-10 00:03:52,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:03:52" (1/1) ... [2021-07-10 00:03:52,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:03:52" (1/1) ... [2021-07-10 00:03:52,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:03:52" (1/1) ... [2021-07-10 00:03:52,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:03:52" (1/1) ... [2021-07-10 00:03:52,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 00:03:52,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 00:03:52,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 00:03:52,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 00:03:52,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:03:52" (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 [2021-07-10 00:03:52,287 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 00:03:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 00:03:52,288 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 00:03:52,289 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 00:03:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 00:03:52,289 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 00:03:52,289 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 00:03:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 00:03:52,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 00:03:52,290 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 00:03:52,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 00:03:52,470 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 00:03:52,471 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 12:03:52 BoogieIcfgContainer [2021-07-10 00:03:52,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 00:03:52,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 00:03:52,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 00:03:52,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 00:03:52,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:03:52" (1/2) ... [2021-07-10 00:03:52,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e057815 and model type easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 12:03:52, skipping insertion in model container [2021-07-10 00:03:52,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 12:03:52" (2/2) ... [2021-07-10 00:03:52,476 INFO L111 eAbstractionObserver]: Analyzing ICFG easy6.wvr.bpl [2021-07-10 00:03:52,496 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 00:03:52,497 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 00:03:52,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 00:03:52,498 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 00:03:52,545 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-10 00:03:52,565 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-10 00:03:52,591 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 00:03:52,592 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 00:03:52,592 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 00:03:52,592 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 00:03:52,592 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 00:03:52,592 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 00:03:52,592 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 00:03:52,592 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 00:03:52,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 130 states have (on average 1.6) internal successors, (208), 151 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:52,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-10 00:03:52,760 INFO L500 BasicCegarLoop]: Found error trace [2021-07-10 00:03:52,760 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] [2021-07-10 00:03:52,761 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 00:03:52,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 00:03:52,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1704869927, now seen corresponding path program 1 times [2021-07-10 00:03:52,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 00:03:52,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647937896] [2021-07-10 00:03:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 00:03:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 00:03:52,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:52,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:52,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:52,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:52,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:52,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:52,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:52,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:52,963 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-10 00:03:52,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:52,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:52,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 00:03:52,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 00:03:52,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647937896] [2021-07-10 00:03:52,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647937896] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 00:03:52,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 00:03:52,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-10 00:03:52,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222358515] [2021-07-10 00:03:52,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-10 00:03:52,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 00:03:52,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-10 00:03:52,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-10 00:03:52,999 INFO L87 Difference]: Start difference. First operand has 152 states, 130 states have (on average 1.6) internal successors, (208), 151 states have internal predecessors, (208), 0 states have call successors, (0), 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 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-10 00:03:53,097 INFO L93 Difference]: Finished difference Result 202 states and 264 transitions. [2021-07-10 00:03:53,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 00:03:53,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-07-10 00:03:53,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-10 00:03:53,104 INFO L225 Difference]: With dead ends: 202 [2021-07-10 00:03:53,104 INFO L226 Difference]: Without dead ends: 121 [2021-07-10 00:03:53,105 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-10 00:03:53,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-07-10 00:03:53,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 97. [2021-07-10 00:03:53,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.40625) internal successors, (135), 96 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2021-07-10 00:03:53,127 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 31 [2021-07-10 00:03:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-10 00:03:53,127 INFO L482 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2021-07-10 00:03:53,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2021-07-10 00:03:53,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-10 00:03:53,128 INFO L500 BasicCegarLoop]: Found error trace [2021-07-10 00:03:53,129 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-10 00:03:53,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 00:03:53,129 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 00:03:53,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 00:03:53,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1477739763, now seen corresponding path program 2 times [2021-07-10 00:03:53,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 00:03:53,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922982305] [2021-07-10 00:03:53,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 00:03:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 00:03:53,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:53,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-10 00:03:53,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-10 00:03:53,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-10 00:03:53,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-10 00:03:53,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 00:03:53,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 00:03:53,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922982305] [2021-07-10 00:03:53,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922982305] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 00:03:53,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 00:03:53,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-10 00:03:53,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766204316] [2021-07-10 00:03:53,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-10 00:03:53,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 00:03:53,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-10 00:03:53,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-10 00:03:53,191 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-10 00:03:53,303 INFO L93 Difference]: Finished difference Result 191 states and 274 transitions. [2021-07-10 00:03:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 00:03:53,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-07-10 00:03:53,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-10 00:03:53,306 INFO L225 Difference]: With dead ends: 191 [2021-07-10 00:03:53,307 INFO L226 Difference]: Without dead ends: 161 [2021-07-10 00:03:53,307 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-07-10 00:03:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-07-10 00:03:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 87. [2021-07-10 00:03:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 86 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 120 transitions. [2021-07-10 00:03:53,318 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 120 transitions. Word has length 31 [2021-07-10 00:03:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-10 00:03:53,318 INFO L482 AbstractCegarLoop]: Abstraction has 87 states and 120 transitions. [2021-07-10 00:03:53,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 120 transitions. [2021-07-10 00:03:53,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-10 00:03:53,319 INFO L500 BasicCegarLoop]: Found error trace [2021-07-10 00:03:53,319 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] [2021-07-10 00:03:53,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-10 00:03:53,319 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 00:03:53,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 00:03:53,320 INFO L82 PathProgramCache]: Analyzing trace with hash 35857941, now seen corresponding path program 3 times [2021-07-10 00:03:53,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 00:03:53,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320510037] [2021-07-10 00:03:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 00:03:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 00:03:53,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:53,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:53,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 00:03:53,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 00:03:53,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320510037] [2021-07-10 00:03:53,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320510037] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 00:03:53,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 00:03:53,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-10 00:03:53,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113758936] [2021-07-10 00:03:53,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-10 00:03:53,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 00:03:53,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-10 00:03:53,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-10 00:03:53,339 INFO L87 Difference]: Start difference. First operand 87 states and 120 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-10 00:03:53,349 INFO L93 Difference]: Finished difference Result 81 states and 108 transitions. [2021-07-10 00:03:53,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 00:03:53,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-07-10 00:03:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-10 00:03:53,352 INFO L225 Difference]: With dead ends: 81 [2021-07-10 00:03:53,352 INFO L226 Difference]: Without dead ends: 81 [2021-07-10 00:03:53,353 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-10 00:03:53,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-07-10 00:03:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-07-10 00:03:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.35) internal successors, (108), 80 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 108 transitions. [2021-07-10 00:03:53,359 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 108 transitions. Word has length 31 [2021-07-10 00:03:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-10 00:03:53,359 INFO L482 AbstractCegarLoop]: Abstraction has 81 states and 108 transitions. [2021-07-10 00:03:53,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 108 transitions. [2021-07-10 00:03:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-10 00:03:53,360 INFO L500 BasicCegarLoop]: Found error trace [2021-07-10 00:03:53,360 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] [2021-07-10 00:03:53,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-10 00:03:53,360 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 00:03:53,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 00:03:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash -319106367, now seen corresponding path program 4 times [2021-07-10 00:03:53,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 00:03:53,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785696732] [2021-07-10 00:03:53,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 00:03:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 00:03:53,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-10 00:03:53,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 00:03:53,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 00:03:53,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785696732] [2021-07-10 00:03:53,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785696732] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 00:03:53,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 00:03:53,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-10 00:03:53,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210731784] [2021-07-10 00:03:53,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-10 00:03:53,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 00:03:53,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-10 00:03:53,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-10 00:03:53,463 INFO L87 Difference]: Start difference. First operand 81 states and 108 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-10 00:03:53,531 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2021-07-10 00:03:53,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 00:03:53,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-07-10 00:03:53,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-10 00:03:53,532 INFO L225 Difference]: With dead ends: 103 [2021-07-10 00:03:53,532 INFO L226 Difference]: Without dead ends: 73 [2021-07-10 00:03:53,533 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 100.7ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-10 00:03:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-07-10 00:03:53,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2021-07-10 00:03:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2021-07-10 00:03:53,535 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 31 [2021-07-10 00:03:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-10 00:03:53,536 INFO L482 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2021-07-10 00:03:53,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2021-07-10 00:03:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-10 00:03:53,536 INFO L500 BasicCegarLoop]: Found error trace [2021-07-10 00:03:53,537 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-10 00:03:53,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-10 00:03:53,537 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 00:03:53,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 00:03:53,537 INFO L82 PathProgramCache]: Analyzing trace with hash 763114329, now seen corresponding path program 5 times [2021-07-10 00:03:53,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 00:03:53,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156663317] [2021-07-10 00:03:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 00:03:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 00:03:53,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:53,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-10 00:03:53,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,597 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-07-10 00:03:53,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 00:03:53,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 00:03:53,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156663317] [2021-07-10 00:03:53,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156663317] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 00:03:53,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 00:03:53,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-10 00:03:53,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938050601] [2021-07-10 00:03:53,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-10 00:03:53,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 00:03:53,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-10 00:03:53,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-10 00:03:53,608 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-10 00:03:53,698 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2021-07-10 00:03:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 00:03:53,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-07-10 00:03:53,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-10 00:03:53,699 INFO L225 Difference]: With dead ends: 128 [2021-07-10 00:03:53,699 INFO L226 Difference]: Without dead ends: 125 [2021-07-10 00:03:53,700 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 87.3ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-07-10 00:03:53,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-07-10 00:03:53,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 70. [2021-07-10 00:03:53,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 69 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2021-07-10 00:03:53,703 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 31 [2021-07-10 00:03:53,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-10 00:03:53,703 INFO L482 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2021-07-10 00:03:53,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,704 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2021-07-10 00:03:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-10 00:03:53,704 INFO L500 BasicCegarLoop]: Found error trace [2021-07-10 00:03:53,704 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] [2021-07-10 00:03:53,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-10 00:03:53,704 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 00:03:53,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 00:03:53,705 INFO L82 PathProgramCache]: Analyzing trace with hash -2079675081, now seen corresponding path program 6 times [2021-07-10 00:03:53,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 00:03:53,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235596060] [2021-07-10 00:03:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 00:03:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 00:03:53,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:53,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-10 00:03:53,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 00:03:53,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 00:03:53,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235596060] [2021-07-10 00:03:53,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235596060] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 00:03:53,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 00:03:53,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-10 00:03:53,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527176509] [2021-07-10 00:03:53,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-10 00:03:53,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 00:03:53,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-10 00:03:53,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-10 00:03:53,770 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-10 00:03:53,881 INFO L93 Difference]: Finished difference Result 119 states and 156 transitions. [2021-07-10 00:03:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 00:03:53,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-07-10 00:03:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-10 00:03:53,881 INFO L225 Difference]: With dead ends: 119 [2021-07-10 00:03:53,882 INFO L226 Difference]: Without dead ends: 105 [2021-07-10 00:03:53,882 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-07-10 00:03:53,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-07-10 00:03:53,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 60. [2021-07-10 00:03:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 59 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2021-07-10 00:03:53,884 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 31 [2021-07-10 00:03:53,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-10 00:03:53,884 INFO L482 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2021-07-10 00:03:53,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2021-07-10 00:03:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-10 00:03:53,885 INFO L500 BasicCegarLoop]: Found error trace [2021-07-10 00:03:53,885 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] [2021-07-10 00:03:53,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-10 00:03:53,885 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 00:03:53,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 00:03:53,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2096939465, now seen corresponding path program 7 times [2021-07-10 00:03:53,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 00:03:53,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233966109] [2021-07-10 00:03:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 00:03:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 00:03:53,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:53,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-10 00:03:53,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:53,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-10 00:03:53,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:53,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 00:03:53,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 00:03:53,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233966109] [2021-07-10 00:03:53,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233966109] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 00:03:53,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 00:03:53,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-10 00:03:53,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956698705] [2021-07-10 00:03:53,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-10 00:03:53,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 00:03:53,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-10 00:03:53,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-10 00:03:53,961 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:54,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-10 00:03:54,068 INFO L93 Difference]: Finished difference Result 114 states and 149 transitions. [2021-07-10 00:03:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 00:03:54,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-07-10 00:03:54,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-10 00:03:54,069 INFO L225 Difference]: With dead ends: 114 [2021-07-10 00:03:54,069 INFO L226 Difference]: Without dead ends: 111 [2021-07-10 00:03:54,069 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-10 00:03:54,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-07-10 00:03:54,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 71. [2021-07-10 00:03:54,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 70 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2021-07-10 00:03:54,086 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 31 [2021-07-10 00:03:54,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-10 00:03:54,087 INFO L482 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2021-07-10 00:03:54,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2021-07-10 00:03:54,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-10 00:03:54,089 INFO L500 BasicCegarLoop]: Found error trace [2021-07-10 00:03:54,090 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] [2021-07-10 00:03:54,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-10 00:03:54,090 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 00:03:54,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 00:03:54,090 INFO L82 PathProgramCache]: Analyzing trace with hash -644761579, now seen corresponding path program 8 times [2021-07-10 00:03:54,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 00:03:54,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352886110] [2021-07-10 00:03:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 00:03:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 00:03:54,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:54,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-10 00:03:54,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:54,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:54,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:54,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:54,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:54,151 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-07-10 00:03:54,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-10 00:03:54,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 00:03:54,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 00:03:54,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352886110] [2021-07-10 00:03:54,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352886110] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 00:03:54,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 00:03:54,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-10 00:03:54,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370962378] [2021-07-10 00:03:54,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-10 00:03:54,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 00:03:54,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-10 00:03:54,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-10 00:03:54,162 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:54,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-10 00:03:54,245 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2021-07-10 00:03:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 00:03:54,246 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-07-10 00:03:54,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-10 00:03:54,248 INFO L225 Difference]: With dead ends: 105 [2021-07-10 00:03:54,248 INFO L226 Difference]: Without dead ends: 93 [2021-07-10 00:03:54,248 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 85.3ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-07-10 00:03:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-07-10 00:03:54,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-07-10 00:03:54,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 62 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:54,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2021-07-10 00:03:54,251 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 31 [2021-07-10 00:03:54,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-10 00:03:54,251 INFO L482 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2021-07-10 00:03:54,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:54,251 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2021-07-10 00:03:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-10 00:03:54,253 INFO L500 BasicCegarLoop]: Found error trace [2021-07-10 00:03:54,253 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] [2021-07-10 00:03:54,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-10 00:03:54,253 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 00:03:54,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 00:03:54,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1546747047, now seen corresponding path program 9 times [2021-07-10 00:03:54,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 00:03:54,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612506194] [2021-07-10 00:03:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 00:03:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 00:03:54,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:54,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:54,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 00:03:54,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 00:03:54,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612506194] [2021-07-10 00:03:54,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612506194] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 00:03:54,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 00:03:54,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-10 00:03:54,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686828088] [2021-07-10 00:03:54,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-10 00:03:54,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 00:03:54,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-10 00:03:54,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-10 00:03:54,278 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:54,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-10 00:03:54,290 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2021-07-10 00:03:54,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 00:03:54,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-07-10 00:03:54,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-10 00:03:54,290 INFO L225 Difference]: With dead ends: 62 [2021-07-10 00:03:54,290 INFO L226 Difference]: Without dead ends: 54 [2021-07-10 00:03:54,290 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-10 00:03:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-07-10 00:03:54,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-07-10 00:03:54,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 53 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2021-07-10 00:03:54,292 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 31 [2021-07-10 00:03:54,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-10 00:03:54,292 INFO L482 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2021-07-10 00:03:54,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2021-07-10 00:03:54,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-10 00:03:54,292 INFO L500 BasicCegarLoop]: Found error trace [2021-07-10 00:03:54,292 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] [2021-07-10 00:03:54,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-10 00:03:54,293 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 00:03:54,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 00:03:54,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1108599925, now seen corresponding path program 10 times [2021-07-10 00:03:54,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 00:03:54,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685929116] [2021-07-10 00:03:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 00:03:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 00:03:54,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:54,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-10 00:03:54,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-10 00:03:54,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-10 00:03:54,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-10 00:03:54,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-10 00:03:54,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 00:03:54,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-10 00:03:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 00:03:54,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 00:03:54,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685929116] [2021-07-10 00:03:54,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685929116] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 00:03:54,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 00:03:54,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-10 00:03:54,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825367936] [2021-07-10 00:03:54,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-10 00:03:54,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 00:03:54,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-10 00:03:54,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-10 00:03:54,332 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-10 00:03:54,373 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-07-10 00:03:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 00:03:54,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-07-10 00:03:54,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-10 00:03:54,373 INFO L225 Difference]: With dead ends: 31 [2021-07-10 00:03:54,373 INFO L226 Difference]: Without dead ends: 0 [2021-07-10 00:03:54,374 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-07-10 00:03:54,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-10 00:03:54,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-10 00:03:54,374 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) [2021-07-10 00:03:54,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-10 00:03:54,374 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-07-10 00:03:54,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-10 00:03:54,374 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-10 00:03:54,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 00:03:54,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-10 00:03:54,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-10 00:03:54,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-10 00:03:54,376 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-10 00:03:54,377 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 12:03:54 BasicIcfg [2021-07-10 00:03:54,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-10 00:03:54,377 INFO L168 Benchmark]: Toolchain (without parser) took 2191.48 ms. Allocated memory was 219.2 MB in the beginning and 263.2 MB in the end (delta: 44.0 MB). Free memory was 199.3 MB in the beginning and 143.0 MB in the end (delta: 56.3 MB). Peak memory consumption was 101.4 MB. Max. memory is 8.0 GB. [2021-07-10 00:03:54,378 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.36 ms. Allocated memory is still 219.2 MB. Free memory is still 200.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-10 00:03:54,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.80 ms. Allocated memory is still 219.2 MB. Free memory was 199.1 MB in the beginning and 197.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-10 00:03:54,378 INFO L168 Benchmark]: Boogie Preprocessor took 11.81 ms. Allocated memory is still 219.2 MB. Free memory was 197.8 MB in the beginning and 196.9 MB in the end (delta: 920.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-10 00:03:54,378 INFO L168 Benchmark]: RCFGBuilder took 251.38 ms. Allocated memory is still 219.2 MB. Free memory was 196.7 MB in the beginning and 185.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-10 00:03:54,378 INFO L168 Benchmark]: TraceAbstraction took 1904.41 ms. Allocated memory was 219.2 MB in the beginning and 263.2 MB in the end (delta: 44.0 MB). Free memory was 184.8 MB in the beginning and 143.0 MB in the end (delta: 41.8 MB). Peak memory consumption was 86.7 MB. Max. memory is 8.0 GB. [2021-07-10 00:03:54,379 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 0.36 ms. Allocated memory is still 219.2 MB. Free memory is still 200.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.80 ms. Allocated memory is still 219.2 MB. Free memory was 199.1 MB in the beginning and 197.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.81 ms. Allocated memory is still 219.2 MB. Free memory was 197.8 MB in the beginning and 196.9 MB in the end (delta: 920.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 251.38 ms. Allocated memory is still 219.2 MB. Free memory was 196.7 MB in the beginning and 185.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1904.41 ms. Allocated memory was 219.2 MB in the beginning and 263.2 MB in the end (delta: 44.0 MB). Free memory was 184.8 MB in the beginning and 143.0 MB in the end (delta: 41.8 MB). Peak memory consumption was 86.7 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: 120, positive: 108, positive conditional: 108, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 120, positive: 108, positive conditional: 0, positive unconditional: 108, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 120, positive: 108, positive conditional: 0, positive unconditional: 108, 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: 120, positive: 105, positive conditional: 0, positive unconditional: 105, 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: 54, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 120, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 120, unknown conditional: 0, unknown unconditional: 120] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 108, Positive conditional cache size: 0, Positive unconditional cache size: 108, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Independence queries for same thread: 0 - PositiveResult [Line: 60]: 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 5 procedures, 60 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1785.1ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 29.1ms, AutomataDifference: 775.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 146.7ms, PartialOrderReductionTime: 134.9ms, HoareTripleCheckerStatistics: 368 SDtfs, 742 SDslu, 1167 SDs, 0 SdLazy, 388 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 215.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 670.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=0, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 60.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 279 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.8ms SsaConstructionTime, 64.8ms SatisfiabilityAnalysisTime, 573.4ms InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 1120 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...