/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 23:00:41,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 23:00:41,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 23:00:42,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 23:00:42,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 23:00:42,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 23:00:42,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 23:00:42,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 23:00:42,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 23:00:42,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 23:00:42,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 23:00:42,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 23:00:42,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 23:00:42,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 23:00:42,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 23:00:42,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 23:00:42,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 23:00:42,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-07-09 23:00:42,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 23:00:42,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 23:00:42,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 23:00:42,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 23:00:42,099 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 23:00:42,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 23:00:42,099 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 23:00:42,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 23:00:42,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 23:00:42,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 23:00:42,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 23:00:42,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 23:00:42,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 23:00:42,101 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 23:00:42,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 23:00:42,101 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 23:00:42,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 23:00:42,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 23:00:42,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 23:00:42,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 23:00:42,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 23:00:42,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:00:42,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 23:00:42,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 23:00:42,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 23:00:42,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 23:00:42,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 23:00:42,102 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 23:00:42,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 23:00:42,102 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 23:00:42,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 23:00:42,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 23:00:42,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 23:00:42,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 23:00:42,370 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 23:00:42,371 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 23:00:42,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-07-09 23:00:42,372 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-07-09 23:00:42,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 23:00:42,394 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 23:00:42,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 23:00:42,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 23:00:42,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 23:00:42,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:42" (1/1) ... [2021-07-09 23:00:42,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:42" (1/1) ... [2021-07-09 23:00:42,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 23:00:42,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 23:00:42,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 23:00:42,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 23:00:42,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:42" (1/1) ... [2021-07-09 23:00:42,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:42" (1/1) ... [2021-07-09 23:00:42,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:42" (1/1) ... [2021-07-09 23:00:42,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:42" (1/1) ... [2021-07-09 23:00:42,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:42" (1/1) ... [2021-07-09 23:00:42,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:42" (1/1) ... [2021-07-09 23:00:42,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:42" (1/1) ... [2021-07-09 23:00:42,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 23:00:42,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 23:00:42,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 23:00:42,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 23:00:42,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:00:42,493 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 23:00:42,493 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 23:00:42,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 23:00:42,494 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 23:00:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 23:00:42,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 23:00:42,494 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 23:00:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 23:00:42,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 23:00:42,494 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 23:00:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 23:00:42,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 23:00:42,495 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 23:00:42,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 23:00:42,701 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 23:00:42,702 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:00:42 BoogieIcfgContainer [2021-07-09 23:00:42,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 23:00:42,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 23:00:42,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 23:00:42,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 23:00:42,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:42" (1/2) ... [2021-07-09 23:00:42,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656be61f and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 11:00:42, skipping insertion in model container [2021-07-09 23:00:42,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:00:42" (2/2) ... [2021-07-09 23:00:42,707 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-07-09 23:00:42,727 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 23:00:42,728 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 23:00:42,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 23:00:42,728 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 23:00:42,785 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-09 23:00:42,799 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 23:00:42,820 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 23:00:42,820 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 23:00:42,820 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 23:00:42,821 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 23:00:42,821 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 23:00:42,821 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 23:00:42,821 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 23:00:42,821 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 23:00:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 3169 states, 2776 states have (on average 2.2579250720461097) internal successors, (6268), 3168 states have internal predecessors, (6268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:43,403 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:43,404 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:43,404 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:43,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:43,409 INFO L82 PathProgramCache]: Analyzing trace with hash 948112910, now seen corresponding path program 1 times [2021-07-09 23:00:43,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:43,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702099825] [2021-07-09 23:00:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:43,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:43,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:43,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:43,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:43,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:43,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:43,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:43,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:43,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:43,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:43,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:43,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:43,593 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-09 23:00:43,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:43,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:43,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:43,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:43,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702099825] [2021-07-09 23:00:43,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702099825] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:43,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:43,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:00:43,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069117455] [2021-07-09 23:00:43,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:00:43,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:43,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:00:43,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:00:43,625 INFO L87 Difference]: Start difference. First operand has 3169 states, 2776 states have (on average 2.2579250720461097) internal successors, (6268), 3168 states have internal predecessors, (6268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:43,844 INFO L93 Difference]: Finished difference Result 4138 states and 7848 transitions. [2021-07-09 23:00:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:00:43,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:43,868 INFO L225 Difference]: With dead ends: 4138 [2021-07-09 23:00:43,868 INFO L226 Difference]: Without dead ends: 2975 [2021-07-09 23:00:43,870 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 128.8ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-09 23:00:43,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2021-07-09 23:00:44,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2479. [2021-07-09 23:00:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 2478 states have (on average 2.188458434221146) internal successors, (5423), 2478 states have internal predecessors, (5423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 5423 transitions. [2021-07-09 23:00:44,044 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 5423 transitions. Word has length 48 [2021-07-09 23:00:44,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:44,046 INFO L482 AbstractCegarLoop]: Abstraction has 2479 states and 5423 transitions. [2021-07-09 23:00:44,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 5423 transitions. [2021-07-09 23:00:44,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:44,051 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:44,052 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:44,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 23:00:44,052 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:44,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:44,054 INFO L82 PathProgramCache]: Analyzing trace with hash 386027290, now seen corresponding path program 2 times [2021-07-09 23:00:44,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:44,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845237592] [2021-07-09 23:00:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:44,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:44,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:44,275 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-07-09 23:00:44,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-09 23:00:44,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:00:44,288 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-09 23:00:44,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:44,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:44,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:44,304 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-07-09 23:00:44,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:44,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:44,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:44,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845237592] [2021-07-09 23:00:44,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845237592] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:44,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:44,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 23:00:44,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632299382] [2021-07-09 23:00:44,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 23:00:44,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:44,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 23:00:44,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:00:44,312 INFO L87 Difference]: Start difference. First operand 2479 states and 5423 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:44,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:44,436 INFO L93 Difference]: Finished difference Result 2753 states and 6053 transitions. [2021-07-09 23:00:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 23:00:44,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:44,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:44,446 INFO L225 Difference]: With dead ends: 2753 [2021-07-09 23:00:44,447 INFO L226 Difference]: Without dead ends: 2753 [2021-07-09 23:00:44,447 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:00:44,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2021-07-09 23:00:44,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2563. [2021-07-09 23:00:44,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 2.1834504293520687) internal successors, (5594), 2562 states have internal predecessors, (5594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 5594 transitions. [2021-07-09 23:00:44,513 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 5594 transitions. Word has length 48 [2021-07-09 23:00:44,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:44,514 INFO L482 AbstractCegarLoop]: Abstraction has 2563 states and 5594 transitions. [2021-07-09 23:00:44,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:44,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 5594 transitions. [2021-07-09 23:00:44,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:44,523 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:44,526 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:44,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 23:00:44,526 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:44,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:44,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2071106810, now seen corresponding path program 3 times [2021-07-09 23:00:44,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:44,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549587360] [2021-07-09 23:00:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:44,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:44,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:44,626 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-07-09 23:00:44,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-09 23:00:44,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:00:44,638 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-09 23:00:44,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:44,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:44,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:44,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:00:44,673 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-09 23:00:44,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:44,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:44,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:44,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:44,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:44,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:44,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549587360] [2021-07-09 23:00:44,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549587360] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:44,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:44,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 23:00:44,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384026770] [2021-07-09 23:00:44,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 23:00:44,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:44,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 23:00:44,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:44,739 INFO L87 Difference]: Start difference. First operand 2563 states and 5594 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:45,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:45,015 INFO L93 Difference]: Finished difference Result 4203 states and 9509 transitions. [2021-07-09 23:00:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:00:45,016 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:45,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:45,031 INFO L225 Difference]: With dead ends: 4203 [2021-07-09 23:00:45,031 INFO L226 Difference]: Without dead ends: 4203 [2021-07-09 23:00:45,031 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 102.8ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:45,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4203 states. [2021-07-09 23:00:45,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4203 to 3135. [2021-07-09 23:00:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 3134 states have (on average 2.2102744097000637) internal successors, (6927), 3134 states have internal predecessors, (6927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 6927 transitions. [2021-07-09 23:00:45,133 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 6927 transitions. Word has length 48 [2021-07-09 23:00:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:45,133 INFO L482 AbstractCegarLoop]: Abstraction has 3135 states and 6927 transitions. [2021-07-09 23:00:45,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 6927 transitions. [2021-07-09 23:00:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:45,142 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:45,143 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:45,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 23:00:45,143 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:45,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:45,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1066806290, now seen corresponding path program 4 times [2021-07-09 23:00:45,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:45,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403560967] [2021-07-09 23:00:45,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:45,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:45,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:45,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:45,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:45,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:45,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:45,278 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-09 23:00:45,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:45,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:45,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:45,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403560967] [2021-07-09 23:00:45,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403560967] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:45,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:45,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:00:45,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032013592] [2021-07-09 23:00:45,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:00:45,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:45,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:00:45,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:00:45,290 INFO L87 Difference]: Start difference. First operand 3135 states and 6927 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:45,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:45,450 INFO L93 Difference]: Finished difference Result 3870 states and 8447 transitions. [2021-07-09 23:00:45,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:00:45,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:45,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:45,462 INFO L225 Difference]: With dead ends: 3870 [2021-07-09 23:00:45,462 INFO L226 Difference]: Without dead ends: 3581 [2021-07-09 23:00:45,463 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 148.9ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-09 23:00:45,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2021-07-09 23:00:45,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3037. [2021-07-09 23:00:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3036 states have (on average 2.19532279314888) internal successors, (6665), 3036 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 6665 transitions. [2021-07-09 23:00:45,633 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 6665 transitions. Word has length 48 [2021-07-09 23:00:45,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:45,633 INFO L482 AbstractCegarLoop]: Abstraction has 3037 states and 6665 transitions. [2021-07-09 23:00:45,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:45,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 6665 transitions. [2021-07-09 23:00:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:45,638 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:45,638 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:45,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 23:00:45,641 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:45,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:45,643 INFO L82 PathProgramCache]: Analyzing trace with hash -491516466, now seen corresponding path program 5 times [2021-07-09 23:00:45,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:45,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020903707] [2021-07-09 23:00:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:45,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:45,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:45,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:45,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:45,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020903707] [2021-07-09 23:00:45,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020903707] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:45,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:45,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:00:45,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793825877] [2021-07-09 23:00:45,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:00:45,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:45,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:00:45,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:00:45,689 INFO L87 Difference]: Start difference. First operand 3037 states and 6665 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:45,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:45,711 INFO L93 Difference]: Finished difference Result 2960 states and 6398 transitions. [2021-07-09 23:00:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:00:45,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:45,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:45,729 INFO L225 Difference]: With dead ends: 2960 [2021-07-09 23:00:45,729 INFO L226 Difference]: Without dead ends: 2902 [2021-07-09 23:00:45,730 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 [2021-07-09 23:00:45,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2021-07-09 23:00:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2883. [2021-07-09 23:00:45,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2883 states, 2882 states have (on average 2.182859125607217) internal successors, (6291), 2882 states have internal predecessors, (6291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 6291 transitions. [2021-07-09 23:00:45,840 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 6291 transitions. Word has length 48 [2021-07-09 23:00:45,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:45,840 INFO L482 AbstractCegarLoop]: Abstraction has 2883 states and 6291 transitions. [2021-07-09 23:00:45,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:45,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 6291 transitions. [2021-07-09 23:00:45,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:45,846 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:45,846 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:45,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 23:00:45,847 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:45,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:45,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1030004436, now seen corresponding path program 6 times [2021-07-09 23:00:45,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:45,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837202942] [2021-07-09 23:00:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:45,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:45,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:45,915 INFO L142 QuantifierPusher]: treesize reduction 19, result has 57.8 percent of original size [2021-07-09 23:00:45,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-09 23:00:45,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:00:45,927 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-09 23:00:45,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:45,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:45,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:45,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:45,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:45,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:45,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837202942] [2021-07-09 23:00:45,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837202942] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:45,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:45,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:00:45,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604102910] [2021-07-09 23:00:45,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:00:45,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:45,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:00:45,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:00:45,955 INFO L87 Difference]: Start difference. First operand 2883 states and 6291 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:46,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:46,109 INFO L93 Difference]: Finished difference Result 2903 states and 6245 transitions. [2021-07-09 23:00:46,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 23:00:46,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:46,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:46,123 INFO L225 Difference]: With dead ends: 2903 [2021-07-09 23:00:46,123 INFO L226 Difference]: Without dead ends: 2770 [2021-07-09 23:00:46,123 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 57.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:00:46,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2021-07-09 23:00:46,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2694. [2021-07-09 23:00:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2693 states have (on average 2.1637578908280726) internal successors, (5827), 2693 states have internal predecessors, (5827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:46,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 5827 transitions. [2021-07-09 23:00:46,181 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 5827 transitions. Word has length 48 [2021-07-09 23:00:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:46,182 INFO L482 AbstractCegarLoop]: Abstraction has 2694 states and 5827 transitions. [2021-07-09 23:00:46,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:46,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 5827 transitions. [2021-07-09 23:00:46,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:46,186 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:46,186 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:46,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 23:00:46,186 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:46,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:46,187 INFO L82 PathProgramCache]: Analyzing trace with hash 699089088, now seen corresponding path program 7 times [2021-07-09 23:00:46,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:46,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612948131] [2021-07-09 23:00:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:46,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:46,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:46,255 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-07-09 23:00:46,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-09 23:00:46,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:00:46,265 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-09 23:00:46,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:46,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:46,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:46,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:46,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:46,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:46,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:46,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:46,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:46,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612948131] [2021-07-09 23:00:46,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612948131] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:46,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:46,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 23:00:46,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949076378] [2021-07-09 23:00:46,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 23:00:46,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:46,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 23:00:46,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:46,326 INFO L87 Difference]: Start difference. First operand 2694 states and 5827 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:46,553 INFO L93 Difference]: Finished difference Result 3304 states and 7134 transitions. [2021-07-09 23:00:46,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:00:46,554 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:46,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:46,560 INFO L225 Difference]: With dead ends: 3304 [2021-07-09 23:00:46,560 INFO L226 Difference]: Without dead ends: 3276 [2021-07-09 23:00:46,560 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 123.7ms TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-07-09 23:00:46,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2021-07-09 23:00:46,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 2991. [2021-07-09 23:00:46,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2990 states have (on average 2.173244147157191) internal successors, (6498), 2990 states have internal predecessors, (6498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 6498 transitions. [2021-07-09 23:00:46,621 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 6498 transitions. Word has length 48 [2021-07-09 23:00:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:46,621 INFO L482 AbstractCegarLoop]: Abstraction has 2991 states and 6498 transitions. [2021-07-09 23:00:46,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:46,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 6498 transitions. [2021-07-09 23:00:46,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:46,626 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:46,626 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:46,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 23:00:46,626 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:46,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1812864832, now seen corresponding path program 8 times [2021-07-09 23:00:46,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:46,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245739827] [2021-07-09 23:00:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:46,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:46,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:46,661 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-07-09 23:00:46,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-09 23:00:46,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:00:46,671 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-09 23:00:46,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:46,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:46,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:46,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:46,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:46,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:46,719 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-07-09 23:00:46,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:46,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:46,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:46,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:46,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245739827] [2021-07-09 23:00:46,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245739827] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:46,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:46,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 23:00:46,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21096879] [2021-07-09 23:00:46,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 23:00:46,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:46,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 23:00:46,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:46,731 INFO L87 Difference]: Start difference. First operand 2991 states and 6498 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:47,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:47,007 INFO L93 Difference]: Finished difference Result 3276 states and 7058 transitions. [2021-07-09 23:00:47,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 23:00:47,007 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:47,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:47,013 INFO L225 Difference]: With dead ends: 3276 [2021-07-09 23:00:47,013 INFO L226 Difference]: Without dead ends: 3198 [2021-07-09 23:00:47,013 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 133.8ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-07-09 23:00:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2021-07-09 23:00:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 3022. [2021-07-09 23:00:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 3021 states have (on average 2.1694803045349222) internal successors, (6554), 3021 states have internal predecessors, (6554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 6554 transitions. [2021-07-09 23:00:47,069 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 6554 transitions. Word has length 48 [2021-07-09 23:00:47,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:47,070 INFO L482 AbstractCegarLoop]: Abstraction has 3022 states and 6554 transitions. [2021-07-09 23:00:47,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:47,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 6554 transitions. [2021-07-09 23:00:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:47,074 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:47,074 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:47,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 23:00:47,074 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:47,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:47,075 INFO L82 PathProgramCache]: Analyzing trace with hash -841542846, now seen corresponding path program 9 times [2021-07-09 23:00:47,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:47,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456712792] [2021-07-09 23:00:47,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:47,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:47,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:47,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:47,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:47,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456712792] [2021-07-09 23:00:47,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456712792] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:47,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:47,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:00:47,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444940647] [2021-07-09 23:00:47,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:00:47,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:47,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:00:47,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:00:47,088 INFO L87 Difference]: Start difference. First operand 3022 states and 6554 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:47,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:47,099 INFO L93 Difference]: Finished difference Result 2976 states and 6298 transitions. [2021-07-09 23:00:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:00:47,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:47,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:47,104 INFO L225 Difference]: With dead ends: 2976 [2021-07-09 23:00:47,104 INFO L226 Difference]: Without dead ends: 2976 [2021-07-09 23:00:47,105 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 [2021-07-09 23:00:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2021-07-09 23:00:47,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 2976. [2021-07-09 23:00:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2975 states have (on average 2.1169747899159663) internal successors, (6298), 2975 states have internal predecessors, (6298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:47,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 6298 transitions. [2021-07-09 23:00:47,160 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 6298 transitions. Word has length 48 [2021-07-09 23:00:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:47,160 INFO L482 AbstractCegarLoop]: Abstraction has 2976 states and 6298 transitions. [2021-07-09 23:00:47,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:47,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 6298 transitions. [2021-07-09 23:00:47,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:47,164 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:47,164 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:47,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 23:00:47,165 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:47,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:47,165 INFO L82 PathProgramCache]: Analyzing trace with hash -452929622, now seen corresponding path program 10 times [2021-07-09 23:00:47,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:47,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137196110] [2021-07-09 23:00:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:47,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:47,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:47,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:47,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:47,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:47,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:47,215 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-09 23:00:47,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:47,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:47,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:47,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137196110] [2021-07-09 23:00:47,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137196110] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:47,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:47,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:00:47,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438132550] [2021-07-09 23:00:47,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:00:47,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:47,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:00:47,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:00:47,225 INFO L87 Difference]: Start difference. First operand 2976 states and 6298 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:47,355 INFO L93 Difference]: Finished difference Result 3442 states and 7200 transitions. [2021-07-09 23:00:47,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:00:47,355 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:47,362 INFO L225 Difference]: With dead ends: 3442 [2021-07-09 23:00:47,362 INFO L226 Difference]: Without dead ends: 3298 [2021-07-09 23:00:47,362 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-09 23:00:47,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2021-07-09 23:00:47,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 2946. [2021-07-09 23:00:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2945 states have (on average 2.1157894736842104) internal successors, (6231), 2945 states have internal predecessors, (6231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 6231 transitions. [2021-07-09 23:00:47,442 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 6231 transitions. Word has length 48 [2021-07-09 23:00:47,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:47,442 INFO L482 AbstractCegarLoop]: Abstraction has 2946 states and 6231 transitions. [2021-07-09 23:00:47,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:47,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 6231 transitions. [2021-07-09 23:00:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:47,446 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:47,446 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:47,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 23:00:47,446 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:47,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1011328342, now seen corresponding path program 11 times [2021-07-09 23:00:47,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:47,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265282341] [2021-07-09 23:00:47,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:47,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:47,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:47,481 INFO L142 QuantifierPusher]: treesize reduction 19, result has 57.8 percent of original size [2021-07-09 23:00:47,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-09 23:00:47,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:00:47,491 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-09 23:00:47,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:47,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:00:47,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:47,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:47,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:47,539 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-07-09 23:00:47,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:47,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:47,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:47,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265282341] [2021-07-09 23:00:47,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265282341] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:47,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:47,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:00:47,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346149029] [2021-07-09 23:00:47,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 23:00:47,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:47,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 23:00:47,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:47,551 INFO L87 Difference]: Start difference. First operand 2946 states and 6231 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:47,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:47,750 INFO L93 Difference]: Finished difference Result 3481 states and 7409 transitions. [2021-07-09 23:00:47,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:00:47,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:47,756 INFO L225 Difference]: With dead ends: 3481 [2021-07-09 23:00:47,756 INFO L226 Difference]: Without dead ends: 3386 [2021-07-09 23:00:47,756 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 92.9ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:00:47,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-07-09 23:00:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3360. [2021-07-09 23:00:47,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 3359 states have (on average 2.1384340577552843) internal successors, (7183), 3359 states have internal predecessors, (7183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:47,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 7183 transitions. [2021-07-09 23:00:47,864 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 7183 transitions. Word has length 48 [2021-07-09 23:00:47,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:47,864 INFO L482 AbstractCegarLoop]: Abstraction has 3360 states and 7183 transitions. [2021-07-09 23:00:47,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:47,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 7183 transitions. [2021-07-09 23:00:47,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:47,869 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:47,870 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:47,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-09 23:00:47,870 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:47,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:47,870 INFO L82 PathProgramCache]: Analyzing trace with hash -558908748, now seen corresponding path program 12 times [2021-07-09 23:00:47,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:47,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205182075] [2021-07-09 23:00:47,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:47,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:47,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:47,931 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-07-09 23:00:47,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-09 23:00:47,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:00:47,954 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-09 23:00:47,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:47,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:47,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:47,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:47,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:48,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:48,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:48,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:48,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:48,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:48,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205182075] [2021-07-09 23:00:48,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205182075] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:48,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:48,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 23:00:48,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975714861] [2021-07-09 23:00:48,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 23:00:48,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:48,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 23:00:48,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:48,043 INFO L87 Difference]: Start difference. First operand 3360 states and 7183 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:48,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:48,342 INFO L93 Difference]: Finished difference Result 3380 states and 7223 transitions. [2021-07-09 23:00:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:00:48,342 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:48,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:48,347 INFO L225 Difference]: With dead ends: 3380 [2021-07-09 23:00:48,347 INFO L226 Difference]: Without dead ends: 3142 [2021-07-09 23:00:48,347 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 171.5ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-07-09 23:00:48,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2021-07-09 23:00:48,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 3130. [2021-07-09 23:00:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3129 states have (on average 2.1431767337807606) internal successors, (6706), 3129 states have internal predecessors, (6706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 6706 transitions. [2021-07-09 23:00:48,398 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 6706 transitions. Word has length 48 [2021-07-09 23:00:48,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:48,398 INFO L482 AbstractCegarLoop]: Abstraction has 3130 states and 6706 transitions. [2021-07-09 23:00:48,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:48,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 6706 transitions. [2021-07-09 23:00:48,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:48,402 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:48,402 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:48,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-09 23:00:48,402 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:48,403 INFO L82 PathProgramCache]: Analyzing trace with hash -443161004, now seen corresponding path program 13 times [2021-07-09 23:00:48,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:48,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602188084] [2021-07-09 23:00:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:48,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:48,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:48,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:48,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:48,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:00:48,435 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-07-09 23:00:48,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:48,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:48,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:48,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:48,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:48,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602188084] [2021-07-09 23:00:48,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602188084] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:48,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:48,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:00:48,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969228480] [2021-07-09 23:00:48,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:00:48,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:48,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:00:48,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:00:48,456 INFO L87 Difference]: Start difference. First operand 3130 states and 6706 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:48,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:48,626 INFO L93 Difference]: Finished difference Result 4973 states and 10851 transitions. [2021-07-09 23:00:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 23:00:48,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:48,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:48,636 INFO L225 Difference]: With dead ends: 4973 [2021-07-09 23:00:48,636 INFO L226 Difference]: Without dead ends: 4866 [2021-07-09 23:00:48,636 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:48,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2021-07-09 23:00:48,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 3486. [2021-07-09 23:00:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3485 states have (on average 2.157245337159254) internal successors, (7518), 3485 states have internal predecessors, (7518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:48,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 7518 transitions. [2021-07-09 23:00:48,718 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 7518 transitions. Word has length 48 [2021-07-09 23:00:48,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:48,718 INFO L482 AbstractCegarLoop]: Abstraction has 3486 states and 7518 transitions. [2021-07-09 23:00:48,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 7518 transitions. [2021-07-09 23:00:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:48,723 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:48,723 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:48,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-09 23:00:48,724 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:48,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:48,724 INFO L82 PathProgramCache]: Analyzing trace with hash 333324854, now seen corresponding path program 14 times [2021-07-09 23:00:48,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:48,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510185709] [2021-07-09 23:00:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:48,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:48,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:48,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:48,801 INFO L142 QuantifierPusher]: treesize reduction 25, result has 41.9 percent of original size [2021-07-09 23:00:48,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-09 23:00:48,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:48,814 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-07-09 23:00:48,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 23:00:48,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:48,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:48,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:48,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:48,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:48,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:48,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510185709] [2021-07-09 23:00:48,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510185709] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:48,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:48,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:00:48,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766141763] [2021-07-09 23:00:48,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 23:00:48,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:48,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 23:00:48,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:48,853 INFO L87 Difference]: Start difference. First operand 3486 states and 7518 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:49,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:49,033 INFO L93 Difference]: Finished difference Result 5376 states and 11685 transitions. [2021-07-09 23:00:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 23:00:49,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:49,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:49,044 INFO L225 Difference]: With dead ends: 5376 [2021-07-09 23:00:49,044 INFO L226 Difference]: Without dead ends: 5226 [2021-07-09 23:00:49,045 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-07-09 23:00:49,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2021-07-09 23:00:49,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 4040. [2021-07-09 23:00:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4040 states, 4039 states have (on average 2.166377816291161) internal successors, (8750), 4039 states have internal predecessors, (8750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 8750 transitions. [2021-07-09 23:00:49,123 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 8750 transitions. Word has length 48 [2021-07-09 23:00:49,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:49,124 INFO L482 AbstractCegarLoop]: Abstraction has 4040 states and 8750 transitions. [2021-07-09 23:00:49,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:49,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 8750 transitions. [2021-07-09 23:00:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:49,129 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:49,129 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:49,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-09 23:00:49,130 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:49,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:49,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1369475846, now seen corresponding path program 15 times [2021-07-09 23:00:49,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:49,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439879578] [2021-07-09 23:00:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:49,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:49,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:49,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:49,171 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-07-09 23:00:49,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-09 23:00:49,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:49,181 INFO L142 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size [2021-07-09 23:00:49,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:00:49,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:49,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:49,203 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-07-09 23:00:49,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:49,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:49,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:49,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439879578] [2021-07-09 23:00:49,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439879578] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:49,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:49,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:00:49,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594937552] [2021-07-09 23:00:49,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 23:00:49,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:49,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 23:00:49,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:49,212 INFO L87 Difference]: Start difference. First operand 4040 states and 8750 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:49,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:49,372 INFO L93 Difference]: Finished difference Result 4819 states and 10450 transitions. [2021-07-09 23:00:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 23:00:49,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:49,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:49,379 INFO L225 Difference]: With dead ends: 4819 [2021-07-09 23:00:49,379 INFO L226 Difference]: Without dead ends: 4710 [2021-07-09 23:00:49,379 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-07-09 23:00:49,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2021-07-09 23:00:49,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 4001. [2021-07-09 23:00:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 4000 states have (on average 2.165) internal successors, (8660), 4000 states have internal predecessors, (8660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 8660 transitions. [2021-07-09 23:00:49,474 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 8660 transitions. Word has length 48 [2021-07-09 23:00:49,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:49,474 INFO L482 AbstractCegarLoop]: Abstraction has 4001 states and 8660 transitions. [2021-07-09 23:00:49,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 8660 transitions. [2021-07-09 23:00:49,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:49,479 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:49,480 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:49,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-09 23:00:49,480 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:49,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:49,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1058984642, now seen corresponding path program 16 times [2021-07-09 23:00:49,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:49,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035695131] [2021-07-09 23:00:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:49,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:49,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:49,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:49,522 INFO L142 QuantifierPusher]: treesize reduction 25, result has 41.9 percent of original size [2021-07-09 23:00:49,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-09 23:00:49,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:49,533 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-07-09 23:00:49,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 23:00:49,549 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-07-09 23:00:49,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 23:00:49,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:49,572 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-07-09 23:00:49,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:49,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:49,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:49,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:49,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035695131] [2021-07-09 23:00:49,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035695131] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:49,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:49,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:00:49,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683846556] [2021-07-09 23:00:49,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 23:00:49,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:49,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 23:00:49,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:49,580 INFO L87 Difference]: Start difference. First operand 4001 states and 8660 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:49,729 INFO L93 Difference]: Finished difference Result 4753 states and 10282 transitions. [2021-07-09 23:00:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 23:00:49,729 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:49,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:49,734 INFO L225 Difference]: With dead ends: 4753 [2021-07-09 23:00:49,734 INFO L226 Difference]: Without dead ends: 4627 [2021-07-09 23:00:49,735 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 102.2ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-07-09 23:00:49,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2021-07-09 23:00:49,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 3921. [2021-07-09 23:00:49,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3921 states, 3920 states have (on average 2.150765306122449) internal successors, (8431), 3920 states have internal predecessors, (8431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 8431 transitions. [2021-07-09 23:00:49,801 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 8431 transitions. Word has length 48 [2021-07-09 23:00:49,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:49,802 INFO L482 AbstractCegarLoop]: Abstraction has 3921 states and 8431 transitions. [2021-07-09 23:00:49,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:49,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 8431 transitions. [2021-07-09 23:00:49,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:49,807 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:49,807 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:49,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-09 23:00:49,807 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:49,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:49,807 INFO L82 PathProgramCache]: Analyzing trace with hash -643816058, now seen corresponding path program 17 times [2021-07-09 23:00:49,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:49,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083527293] [2021-07-09 23:00:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:49,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:49,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:49,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:49,845 INFO L142 QuantifierPusher]: treesize reduction 17, result has 51.4 percent of original size [2021-07-09 23:00:49,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-09 23:00:49,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:49,856 INFO L142 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size [2021-07-09 23:00:49,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:00:49,866 INFO L142 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size [2021-07-09 23:00:49,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:00:49,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:49,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:49,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:49,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:49,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:49,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083527293] [2021-07-09 23:00:49,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083527293] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:49,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:49,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:00:49,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007448299] [2021-07-09 23:00:49,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 23:00:49,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:49,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 23:00:49,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:49,893 INFO L87 Difference]: Start difference. First operand 3921 states and 8431 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:50,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:50,050 INFO L93 Difference]: Finished difference Result 4488 states and 9505 transitions. [2021-07-09 23:00:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 23:00:50,051 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:50,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:50,055 INFO L225 Difference]: With dead ends: 4488 [2021-07-09 23:00:50,055 INFO L226 Difference]: Without dead ends: 4125 [2021-07-09 23:00:50,056 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-07-09 23:00:50,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4125 states. [2021-07-09 23:00:50,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4125 to 3151. [2021-07-09 23:00:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3151 states, 3150 states have (on average 2.1142857142857143) internal successors, (6660), 3150 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3151 states to 3151 states and 6660 transitions. [2021-07-09 23:00:50,154 INFO L78 Accepts]: Start accepts. Automaton has 3151 states and 6660 transitions. Word has length 48 [2021-07-09 23:00:50,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:50,154 INFO L482 AbstractCegarLoop]: Abstraction has 3151 states and 6660 transitions. [2021-07-09 23:00:50,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:50,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3151 states and 6660 transitions. [2021-07-09 23:00:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:50,161 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:50,161 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:50,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-09 23:00:50,161 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:50,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1722484080, now seen corresponding path program 18 times [2021-07-09 23:00:50,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:50,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133671474] [2021-07-09 23:00:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:50,192 INFO L142 QuantifierPusher]: treesize reduction 25, result has 47.9 percent of original size [2021-07-09 23:00:50,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 23:00:50,203 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-07-09 23:00:50,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:50,206 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-07-09 23:00:50,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:50,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:50,212 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-07-09 23:00:50,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:50,213 INFO L142 QuantifierPusher]: treesize reduction 23, result has 23.3 percent of original size [2021-07-09 23:00:50,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:50,219 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-07-09 23:00:50,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-09 23:00:50,233 INFO L142 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size [2021-07-09 23:00:50,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-09 23:00:50,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:50,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:50,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133671474] [2021-07-09 23:00:50,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133671474] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:50,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:50,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:00:50,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157196807] [2021-07-09 23:00:50,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:00:50,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:50,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:00:50,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:00:50,249 INFO L87 Difference]: Start difference. First operand 3151 states and 6660 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:50,342 INFO L93 Difference]: Finished difference Result 3720 states and 7709 transitions. [2021-07-09 23:00:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 23:00:50,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:50,346 INFO L225 Difference]: With dead ends: 3720 [2021-07-09 23:00:50,346 INFO L226 Difference]: Without dead ends: 3482 [2021-07-09 23:00:50,346 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:00:50,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2021-07-09 23:00:50,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3280. [2021-07-09 23:00:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3280 states, 3279 states have (on average 2.1027752363525467) internal successors, (6895), 3279 states have internal predecessors, (6895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3280 states to 3280 states and 6895 transitions. [2021-07-09 23:00:50,396 INFO L78 Accepts]: Start accepts. Automaton has 3280 states and 6895 transitions. Word has length 48 [2021-07-09 23:00:50,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:50,396 INFO L482 AbstractCegarLoop]: Abstraction has 3280 states and 6895 transitions. [2021-07-09 23:00:50,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:50,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3280 states and 6895 transitions. [2021-07-09 23:00:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:50,402 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:50,402 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:50,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-09 23:00:50,402 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:50,402 INFO L82 PathProgramCache]: Analyzing trace with hash -512589246, now seen corresponding path program 19 times [2021-07-09 23:00:50,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:50,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178546271] [2021-07-09 23:00:50,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:50,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:50,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:50,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:50,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:50,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:50,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:50,444 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-07-09 23:00:50,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:50,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:50,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:50,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:50,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178546271] [2021-07-09 23:00:50,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178546271] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:50,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:50,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:00:50,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004006000] [2021-07-09 23:00:50,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:00:50,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:50,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:00:50,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:00:50,458 INFO L87 Difference]: Start difference. First operand 3280 states and 6895 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:50,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:50,635 INFO L93 Difference]: Finished difference Result 4813 states and 10070 transitions. [2021-07-09 23:00:50,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:00:50,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:50,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:50,641 INFO L225 Difference]: With dead ends: 4813 [2021-07-09 23:00:50,641 INFO L226 Difference]: Without dead ends: 4658 [2021-07-09 23:00:50,641 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 75.4ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:00:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-07-09 23:00:50,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3327. [2021-07-09 23:00:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3326 states have (on average 2.097113650030066) internal successors, (6975), 3326 states have internal predecessors, (6975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 6975 transitions. [2021-07-09 23:00:50,699 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 6975 transitions. Word has length 48 [2021-07-09 23:00:50,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:50,699 INFO L482 AbstractCegarLoop]: Abstraction has 3327 states and 6975 transitions. [2021-07-09 23:00:50,700 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:50,700 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 6975 transitions. [2021-07-09 23:00:50,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:50,704 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:50,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:50,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-09 23:00:50,704 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:50,704 INFO L82 PathProgramCache]: Analyzing trace with hash 632319524, now seen corresponding path program 20 times [2021-07-09 23:00:50,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:50,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424236588] [2021-07-09 23:00:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:50,722 INFO L142 QuantifierPusher]: treesize reduction 25, result has 47.9 percent of original size [2021-07-09 23:00:50,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 23:00:50,733 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-07-09 23:00:50,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:50,735 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-07-09 23:00:50,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:50,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-09 23:00:50,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 23:00:50,758 INFO L142 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-07-09 23:00:50,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-09 23:00:50,769 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-07-09 23:00:50,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 23:00:50,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 23:00:50,800 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-07-09 23:00:50,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:00:50,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 23:00:50,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:50,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:50,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:50,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424236588] [2021-07-09 23:00:50,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424236588] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:50,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:50,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:00:50,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273894356] [2021-07-09 23:00:50,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 23:00:50,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:50,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 23:00:50,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:50,827 INFO L87 Difference]: Start difference. First operand 3327 states and 6975 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:51,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:51,141 INFO L93 Difference]: Finished difference Result 4259 states and 8823 transitions. [2021-07-09 23:00:51,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 23:00:51,141 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:51,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:51,145 INFO L225 Difference]: With dead ends: 4259 [2021-07-09 23:00:51,145 INFO L226 Difference]: Without dead ends: 3918 [2021-07-09 23:00:51,145 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 187.1ms TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-07-09 23:00:51,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2021-07-09 23:00:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3051. [2021-07-09 23:00:51,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 3050 states have (on average 2.1104918032786886) internal successors, (6437), 3050 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:51,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 6437 transitions. [2021-07-09 23:00:51,206 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 6437 transitions. Word has length 48 [2021-07-09 23:00:51,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:51,206 INFO L482 AbstractCegarLoop]: Abstraction has 3051 states and 6437 transitions. [2021-07-09 23:00:51,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 6437 transitions. [2021-07-09 23:00:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:51,210 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:51,210 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:51,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-09 23:00:51,210 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:51,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:51,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1140700604, now seen corresponding path program 21 times [2021-07-09 23:00:51,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:51,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594884794] [2021-07-09 23:00:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:51,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:51,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:51,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:51,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:51,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594884794] [2021-07-09 23:00:51,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594884794] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:51,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:51,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:00:51,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311285185] [2021-07-09 23:00:51,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:00:51,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:51,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:00:51,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:00:51,220 INFO L87 Difference]: Start difference. First operand 3051 states and 6437 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:51,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:51,231 INFO L93 Difference]: Finished difference Result 2960 states and 6096 transitions. [2021-07-09 23:00:51,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:00:51,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:51,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:51,234 INFO L225 Difference]: With dead ends: 2960 [2021-07-09 23:00:51,234 INFO L226 Difference]: Without dead ends: 2955 [2021-07-09 23:00:51,234 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:00:51,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-07-09 23:00:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2955. [2021-07-09 23:00:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2954 states have (on average 2.0619498984427893) internal successors, (6091), 2954 states have internal predecessors, (6091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:51,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 6091 transitions. [2021-07-09 23:00:51,284 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 6091 transitions. Word has length 48 [2021-07-09 23:00:51,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:51,284 INFO L482 AbstractCegarLoop]: Abstraction has 2955 states and 6091 transitions. [2021-07-09 23:00:51,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:51,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 6091 transitions. [2021-07-09 23:00:51,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:51,287 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:51,287 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:51,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-09 23:00:51,288 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:51,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2017493028, now seen corresponding path program 22 times [2021-07-09 23:00:51,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:51,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401450459] [2021-07-09 23:00:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:51,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:51,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:51,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:51,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:51,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:51,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:51,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:51,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:51,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:51,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:51,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:51,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401450459] [2021-07-09 23:00:51,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401450459] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:51,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:51,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:00:51,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241779461] [2021-07-09 23:00:51,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 23:00:51,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:51,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 23:00:51,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:51,370 INFO L87 Difference]: Start difference. First operand 2955 states and 6091 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:51,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:51,666 INFO L93 Difference]: Finished difference Result 5590 states and 11465 transitions. [2021-07-09 23:00:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 23:00:51,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:51,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:51,673 INFO L225 Difference]: With dead ends: 5590 [2021-07-09 23:00:51,673 INFO L226 Difference]: Without dead ends: 5198 [2021-07-09 23:00:51,673 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 133.4ms TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-07-09 23:00:51,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5198 states. [2021-07-09 23:00:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5198 to 3031. [2021-07-09 23:00:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 3030 states have (on average 2.067986798679868) internal successors, (6266), 3030 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 6266 transitions. [2021-07-09 23:00:51,729 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 6266 transitions. Word has length 48 [2021-07-09 23:00:51,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:51,729 INFO L482 AbstractCegarLoop]: Abstraction has 3031 states and 6266 transitions. [2021-07-09 23:00:51,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 6266 transitions. [2021-07-09 23:00:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:51,733 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:51,733 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:51,733 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-09 23:00:51,733 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:51,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:51,733 INFO L82 PathProgramCache]: Analyzing trace with hash -827009502, now seen corresponding path program 23 times [2021-07-09 23:00:51,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:51,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967734568] [2021-07-09 23:00:51,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:51,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:51,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:51,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:00:51,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:00:51,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:51,765 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-07-09 23:00:51,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-09 23:00:51,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:51,786 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-07-09 23:00:51,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:51,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:51,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:51,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:51,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967734568] [2021-07-09 23:00:51,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967734568] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:51,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:51,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:00:51,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54645790] [2021-07-09 23:00:51,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 23:00:51,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:51,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 23:00:51,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:51,796 INFO L87 Difference]: Start difference. First operand 3031 states and 6266 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:52,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:52,251 INFO L93 Difference]: Finished difference Result 6113 states and 12864 transitions. [2021-07-09 23:00:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-09 23:00:52,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:52,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:52,258 INFO L225 Difference]: With dead ends: 6113 [2021-07-09 23:00:52,258 INFO L226 Difference]: Without dead ends: 6113 [2021-07-09 23:00:52,259 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 179.3ms TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2021-07-09 23:00:52,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6113 states. [2021-07-09 23:00:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6113 to 3104. [2021-07-09 23:00:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3103 states have (on average 2.0592974540767) internal successors, (6390), 3103 states have internal predecessors, (6390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 6390 transitions. [2021-07-09 23:00:52,326 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 6390 transitions. Word has length 48 [2021-07-09 23:00:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:52,326 INFO L482 AbstractCegarLoop]: Abstraction has 3104 states and 6390 transitions. [2021-07-09 23:00:52,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 6390 transitions. [2021-07-09 23:00:52,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:52,330 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:52,330 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:52,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-09 23:00:52,330 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:52,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:52,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1542292836, now seen corresponding path program 24 times [2021-07-09 23:00:52,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:52,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218382170] [2021-07-09 23:00:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:52,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:52,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:52,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:52,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:52,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:52,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:52,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-09 23:00:52,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:52,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:52,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:52,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218382170] [2021-07-09 23:00:52,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218382170] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:52,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:52,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:00:52,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946714272] [2021-07-09 23:00:52,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:00:52,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:52,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:00:52,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:00:52,402 INFO L87 Difference]: Start difference. First operand 3104 states and 6390 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:52,528 INFO L93 Difference]: Finished difference Result 3482 states and 7122 transitions. [2021-07-09 23:00:52,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:00:52,529 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:52,534 INFO L225 Difference]: With dead ends: 3482 [2021-07-09 23:00:52,534 INFO L226 Difference]: Without dead ends: 3383 [2021-07-09 23:00:52,534 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 99.8ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-09 23:00:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2021-07-09 23:00:52,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 3081. [2021-07-09 23:00:52,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3081 states, 3080 states have (on average 2.0594155844155844) internal successors, (6343), 3080 states have internal predecessors, (6343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 6343 transitions. [2021-07-09 23:00:52,580 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 6343 transitions. Word has length 48 [2021-07-09 23:00:52,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:52,580 INFO L482 AbstractCegarLoop]: Abstraction has 3081 states and 6343 transitions. [2021-07-09 23:00:52,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:52,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 6343 transitions. [2021-07-09 23:00:52,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:52,584 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:52,584 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:52,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-09 23:00:52,584 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:52,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:52,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1998275908, now seen corresponding path program 25 times [2021-07-09 23:00:52,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:52,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400250825] [2021-07-09 23:00:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:52,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:52,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:52,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:52,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:52,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:52,636 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-07-09 23:00:52,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:00:52,641 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-07-09 23:00:52,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:52,641 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-07-09 23:00:52,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:52,648 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-07-09 23:00:52,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:52,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:52,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:52,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400250825] [2021-07-09 23:00:52,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400250825] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:52,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:52,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:00:52,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641503303] [2021-07-09 23:00:52,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:00:52,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:52,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:00:52,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:00:52,656 INFO L87 Difference]: Start difference. First operand 3081 states and 6343 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:52,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:52,842 INFO L93 Difference]: Finished difference Result 3549 states and 7178 transitions. [2021-07-09 23:00:52,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:00:52,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:52,846 INFO L225 Difference]: With dead ends: 3549 [2021-07-09 23:00:52,846 INFO L226 Difference]: Without dead ends: 3472 [2021-07-09 23:00:52,846 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:52,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2021-07-09 23:00:52,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 3020. [2021-07-09 23:00:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 3019 states have (on average 2.057634978469692) internal successors, (6212), 3019 states have internal predecessors, (6212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 6212 transitions. [2021-07-09 23:00:52,898 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 6212 transitions. Word has length 48 [2021-07-09 23:00:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:52,898 INFO L482 AbstractCegarLoop]: Abstraction has 3020 states and 6212 transitions. [2021-07-09 23:00:52,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 6212 transitions. [2021-07-09 23:00:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:52,901 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:52,901 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:52,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-09 23:00:52,902 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:52,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:52,902 INFO L82 PathProgramCache]: Analyzing trace with hash -331331486, now seen corresponding path program 26 times [2021-07-09 23:00:52,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:52,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229712818] [2021-07-09 23:00:52,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:52,922 INFO L142 QuantifierPusher]: treesize reduction 27, result has 51.8 percent of original size [2021-07-09 23:00:52,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-09 23:00:52,936 INFO L142 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size [2021-07-09 23:00:52,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:52,938 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-07-09 23:00:52,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:52,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:52,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:52,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 23:00:52,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:52,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-09 23:00:52,977 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-07-09 23:00:52,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-09 23:00:52,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-07-09 23:00:52,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-09 23:00:53,006 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-07-09 23:00:53,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:53,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:53,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:53,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229712818] [2021-07-09 23:00:53,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229712818] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:53,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:53,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:00:53,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743264928] [2021-07-09 23:00:53,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:00:53,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:53,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:00:53,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:00:53,015 INFO L87 Difference]: Start difference. First operand 3020 states and 6212 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:53,289 INFO L93 Difference]: Finished difference Result 4081 states and 8291 transitions. [2021-07-09 23:00:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-09 23:00:53,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:53,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:53,294 INFO L225 Difference]: With dead ends: 4081 [2021-07-09 23:00:53,294 INFO L226 Difference]: Without dead ends: 4031 [2021-07-09 23:00:53,294 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 155.3ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-07-09 23:00:53,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2021-07-09 23:00:53,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 3346. [2021-07-09 23:00:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3346 states, 3345 states have (on average 2.0568011958146486) internal successors, (6880), 3345 states have internal predecessors, (6880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3346 states to 3346 states and 6880 transitions. [2021-07-09 23:00:53,343 INFO L78 Accepts]: Start accepts. Automaton has 3346 states and 6880 transitions. Word has length 48 [2021-07-09 23:00:53,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:53,343 INFO L482 AbstractCegarLoop]: Abstraction has 3346 states and 6880 transitions. [2021-07-09 23:00:53,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3346 states and 6880 transitions. [2021-07-09 23:00:53,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:53,346 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:53,346 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:53,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-09 23:00:53,347 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:53,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:53,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1765157458, now seen corresponding path program 27 times [2021-07-09 23:00:53,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:53,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431826608] [2021-07-09 23:00:53,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:53,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:53,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:53,404 INFO L142 QuantifierPusher]: treesize reduction 17, result has 54.1 percent of original size [2021-07-09 23:00:53,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-09 23:00:53,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:53,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:53,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:53,416 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-07-09 23:00:53,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:53,422 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-07-09 23:00:53,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:53,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:53,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:53,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431826608] [2021-07-09 23:00:53,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431826608] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:53,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:53,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 23:00:53,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957137018] [2021-07-09 23:00:53,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 23:00:53,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:53,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 23:00:53,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:00:53,424 INFO L87 Difference]: Start difference. First operand 3346 states and 6880 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:53,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:53,503 INFO L93 Difference]: Finished difference Result 4354 states and 8914 transitions. [2021-07-09 23:00:53,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 23:00:53,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:53,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:53,508 INFO L225 Difference]: With dead ends: 4354 [2021-07-09 23:00:53,508 INFO L226 Difference]: Without dead ends: 4051 [2021-07-09 23:00:53,508 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:00:53,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2021-07-09 23:00:53,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3670. [2021-07-09 23:00:53,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 2.0545107658762607) internal successors, (7538), 3669 states have internal predecessors, (7538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 7538 transitions. [2021-07-09 23:00:53,559 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 7538 transitions. Word has length 48 [2021-07-09 23:00:53,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:53,559 INFO L482 AbstractCegarLoop]: Abstraction has 3670 states and 7538 transitions. [2021-07-09 23:00:53,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:53,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 7538 transitions. [2021-07-09 23:00:53,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:53,563 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:53,563 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:53,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-09 23:00:53,563 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:53,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:53,563 INFO L82 PathProgramCache]: Analyzing trace with hash -654451362, now seen corresponding path program 28 times [2021-07-09 23:00:53,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:53,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873586292] [2021-07-09 23:00:53,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:53,579 INFO L142 QuantifierPusher]: treesize reduction 27, result has 46.0 percent of original size [2021-07-09 23:00:53,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 23:00:53,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:53,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:53,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:53,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:53,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:53,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:53,621 INFO L142 QuantifierPusher]: treesize reduction 22, result has 42.1 percent of original size [2021-07-09 23:00:53,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:53,631 INFO L142 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-07-09 23:00:53,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:53,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:53,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:53,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:53,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:53,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:53,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873586292] [2021-07-09 23:00:53,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873586292] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:53,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:53,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 23:00:53,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513114038] [2021-07-09 23:00:53,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 23:00:53,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:53,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 23:00:53,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:53,661 INFO L87 Difference]: Start difference. First operand 3670 states and 7538 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:54,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:54,019 INFO L93 Difference]: Finished difference Result 6322 states and 12978 transitions. [2021-07-09 23:00:54,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-09 23:00:54,019 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:54,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:54,040 INFO L225 Difference]: With dead ends: 6322 [2021-07-09 23:00:54,040 INFO L226 Difference]: Without dead ends: 6075 [2021-07-09 23:00:54,040 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 179.2ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-07-09 23:00:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2021-07-09 23:00:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 3776. [2021-07-09 23:00:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3775 states have (on average 2.0508609271523177) internal successors, (7742), 3775 states have internal predecessors, (7742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 7742 transitions. [2021-07-09 23:00:54,135 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 7742 transitions. Word has length 48 [2021-07-09 23:00:54,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:54,135 INFO L482 AbstractCegarLoop]: Abstraction has 3776 states and 7742 transitions. [2021-07-09 23:00:54,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 7742 transitions. [2021-07-09 23:00:54,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:54,140 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:54,140 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:54,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-09 23:00:54,140 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:54,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:54,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1215634792, now seen corresponding path program 29 times [2021-07-09 23:00:54,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:54,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538446043] [2021-07-09 23:00:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:54,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:54,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:54,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:54,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:54,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:54,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:54,184 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-09 23:00:54,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:54,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:54,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:54,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538446043] [2021-07-09 23:00:54,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538446043] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:54,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:54,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:00:54,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620338979] [2021-07-09 23:00:54,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:00:54,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:54,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:00:54,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:00:54,193 INFO L87 Difference]: Start difference. First operand 3776 states and 7742 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:54,342 INFO L93 Difference]: Finished difference Result 4200 states and 8577 transitions. [2021-07-09 23:00:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:00:54,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:54,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:54,347 INFO L225 Difference]: With dead ends: 4200 [2021-07-09 23:00:54,348 INFO L226 Difference]: Without dead ends: 3904 [2021-07-09 23:00:54,348 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-09 23:00:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-07-09 23:00:54,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3646. [2021-07-09 23:00:54,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 2.03840877914952) internal successors, (7430), 3645 states have internal predecessors, (7430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 7430 transitions. [2021-07-09 23:00:54,396 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 7430 transitions. Word has length 48 [2021-07-09 23:00:54,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:54,396 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 7430 transitions. [2021-07-09 23:00:54,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:54,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 7430 transitions. [2021-07-09 23:00:54,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:54,399 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:54,400 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:54,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-09 23:00:54,400 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:54,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:54,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1536140604, now seen corresponding path program 30 times [2021-07-09 23:00:54,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:54,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148010533] [2021-07-09 23:00:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:54,419 INFO L142 QuantifierPusher]: treesize reduction 27, result has 49.1 percent of original size [2021-07-09 23:00:54,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-09 23:00:54,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 23:00:54,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 23:00:54,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-09 23:00:54,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:54,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 23:00:54,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:00:54,468 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-09 23:00:54,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:54,476 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-07-09 23:00:54,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:54,485 INFO L142 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-07-09 23:00:54,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:54,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:54,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:54,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:54,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:54,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148010533] [2021-07-09 23:00:54,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148010533] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:54,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:54,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:00:54,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458443023] [2021-07-09 23:00:54,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 23:00:54,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:54,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 23:00:54,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:54,516 INFO L87 Difference]: Start difference. First operand 3646 states and 7430 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:54,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:54,765 INFO L93 Difference]: Finished difference Result 4796 states and 9533 transitions. [2021-07-09 23:00:54,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 23:00:54,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:54,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:54,770 INFO L225 Difference]: With dead ends: 4796 [2021-07-09 23:00:54,771 INFO L226 Difference]: Without dead ends: 4562 [2021-07-09 23:00:54,771 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 98.2ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:54,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4562 states. [2021-07-09 23:00:54,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4562 to 3589. [2021-07-09 23:00:54,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3589 states, 3588 states have (on average 2.027870680044593) internal successors, (7276), 3588 states have internal predecessors, (7276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 7276 transitions. [2021-07-09 23:00:54,825 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 7276 transitions. Word has length 48 [2021-07-09 23:00:54,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:54,825 INFO L482 AbstractCegarLoop]: Abstraction has 3589 states and 7276 transitions. [2021-07-09 23:00:54,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 7276 transitions. [2021-07-09 23:00:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:54,829 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:54,829 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:54,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-09 23:00:54,830 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:54,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1235734712, now seen corresponding path program 31 times [2021-07-09 23:00:54,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:54,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345661894] [2021-07-09 23:00:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:54,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:54,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:54,873 INFO L142 QuantifierPusher]: treesize reduction 21, result has 57.1 percent of original size [2021-07-09 23:00:54,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-09 23:00:54,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:54,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:54,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:54,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:54,897 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-07-09 23:00:54,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:54,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:54,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:54,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:54,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:54,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:54,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345661894] [2021-07-09 23:00:54,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345661894] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:54,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:54,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:00:54,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221329046] [2021-07-09 23:00:54,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:00:54,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:54,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:00:54,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:00:54,922 INFO L87 Difference]: Start difference. First operand 3589 states and 7276 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:55,287 INFO L93 Difference]: Finished difference Result 4385 states and 8598 transitions. [2021-07-09 23:00:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 23:00:55,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:55,292 INFO L225 Difference]: With dead ends: 4385 [2021-07-09 23:00:55,292 INFO L226 Difference]: Without dead ends: 4064 [2021-07-09 23:00:55,292 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 170.8ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-07-09 23:00:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2021-07-09 23:00:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 3273. [2021-07-09 23:00:55,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3273 states, 3272 states have (on average 2.0189486552567235) internal successors, (6606), 3272 states have internal predecessors, (6606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:55,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3273 states to 3273 states and 6606 transitions. [2021-07-09 23:00:55,339 INFO L78 Accepts]: Start accepts. Automaton has 3273 states and 6606 transitions. Word has length 48 [2021-07-09 23:00:55,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:55,339 INFO L482 AbstractCegarLoop]: Abstraction has 3273 states and 6606 transitions. [2021-07-09 23:00:55,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3273 states and 6606 transitions. [2021-07-09 23:00:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:55,343 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:55,343 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:55,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-09 23:00:55,343 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:55,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:55,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2051407108, now seen corresponding path program 32 times [2021-07-09 23:00:55,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:55,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984998358] [2021-07-09 23:00:55,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:55,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:55,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:55,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:55,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:55,392 INFO L142 QuantifierPusher]: treesize reduction 21, result has 54.3 percent of original size [2021-07-09 23:00:55,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-09 23:00:55,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:55,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:55,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:55,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:55,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:55,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:00:55,408 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-07-09 23:00:55,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:00:55,415 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-07-09 23:00:55,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:55,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:55,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:55,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:55,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984998358] [2021-07-09 23:00:55,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984998358] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:55,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:55,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 23:00:55,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059802232] [2021-07-09 23:00:55,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 23:00:55,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:55,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 23:00:55,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:00:55,417 INFO L87 Difference]: Start difference. First operand 3273 states and 6606 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:55,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:55,523 INFO L93 Difference]: Finished difference Result 4019 states and 8086 transitions. [2021-07-09 23:00:55,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 23:00:55,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:55,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:55,527 INFO L225 Difference]: With dead ends: 4019 [2021-07-09 23:00:55,527 INFO L226 Difference]: Without dead ends: 3453 [2021-07-09 23:00:55,527 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 42.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:00:55,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2021-07-09 23:00:55,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 3095. [2021-07-09 23:00:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 3094 states have (on average 2.0190691661279896) internal successors, (6247), 3094 states have internal predecessors, (6247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 6247 transitions. [2021-07-09 23:00:55,568 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 6247 transitions. Word has length 48 [2021-07-09 23:00:55,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:55,568 INFO L482 AbstractCegarLoop]: Abstraction has 3095 states and 6247 transitions. [2021-07-09 23:00:55,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 6247 transitions. [2021-07-09 23:00:55,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:55,571 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:55,571 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:55,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-09 23:00:55,572 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:55,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:55,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1581858588, now seen corresponding path program 33 times [2021-07-09 23:00:55,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:55,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468985839] [2021-07-09 23:00:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:55,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:55,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:55,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:55,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:55,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:55,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:55,605 INFO L142 QuantifierPusher]: treesize reduction 6, result has 84.2 percent of original size [2021-07-09 23:00:55,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-07-09 23:00:55,628 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-07-09 23:00:55,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-07-09 23:00:55,661 INFO L142 QuantifierPusher]: treesize reduction 37, result has 53.8 percent of original size [2021-07-09 23:00:55,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-09 23:00:55,686 INFO L142 QuantifierPusher]: treesize reduction 26, result has 52.7 percent of original size [2021-07-09 23:00:55,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-09 23:00:55,706 INFO L142 QuantifierPusher]: treesize reduction 38, result has 38.7 percent of original size [2021-07-09 23:00:55,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-09 23:00:55,719 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-07-09 23:00:55,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:55,720 INFO L142 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size [2021-07-09 23:00:55,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:55,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:55,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:55,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:55,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468985839] [2021-07-09 23:00:55,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468985839] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:55,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:55,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:00:55,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618645625] [2021-07-09 23:00:55,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:00:55,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:55,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:00:55,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:00:55,722 INFO L87 Difference]: Start difference. First operand 3095 states and 6247 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:55,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:55,944 INFO L93 Difference]: Finished difference Result 3309 states and 6656 transitions. [2021-07-09 23:00:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:00:55,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:55,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:55,947 INFO L225 Difference]: With dead ends: 3309 [2021-07-09 23:00:55,947 INFO L226 Difference]: Without dead ends: 3206 [2021-07-09 23:00:55,948 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 147.5ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2021-07-09 23:00:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 3045. [2021-07-09 23:00:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 3044 states have (on average 2.0177398160315376) internal successors, (6142), 3044 states have internal predecessors, (6142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:55,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 6142 transitions. [2021-07-09 23:00:55,995 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 6142 transitions. Word has length 48 [2021-07-09 23:00:55,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:55,995 INFO L482 AbstractCegarLoop]: Abstraction has 3045 states and 6142 transitions. [2021-07-09 23:00:55,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 6142 transitions. [2021-07-09 23:00:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:55,998 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:55,998 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:55,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-09 23:00:55,999 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:55,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:55,999 INFO L82 PathProgramCache]: Analyzing trace with hash 2067485192, now seen corresponding path program 34 times [2021-07-09 23:00:55,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:55,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216186141] [2021-07-09 23:00:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:56,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:56,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:56,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:56,056 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-07-09 23:00:56,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:00:56,061 INFO L142 QuantifierPusher]: treesize reduction 11, result has 67.6 percent of original size [2021-07-09 23:00:56,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 23:00:56,065 INFO L142 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-07-09 23:00:56,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:00:56,075 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-07-09 23:00:56,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:56,082 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-07-09 23:00:56,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:56,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:56,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:56,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216186141] [2021-07-09 23:00:56,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216186141] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:56,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:56,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:00:56,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210756292] [2021-07-09 23:00:56,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:00:56,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:56,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:00:56,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:00:56,091 INFO L87 Difference]: Start difference. First operand 3045 states and 6142 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:56,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:56,219 INFO L93 Difference]: Finished difference Result 3287 states and 6510 transitions. [2021-07-09 23:00:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 23:00:56,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:56,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:56,223 INFO L225 Difference]: With dead ends: 3287 [2021-07-09 23:00:56,223 INFO L226 Difference]: Without dead ends: 3189 [2021-07-09 23:00:56,223 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:56,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2021-07-09 23:00:56,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 2832. [2021-07-09 23:00:56,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2831 states have (on average 2.009184033910279) internal successors, (5688), 2831 states have internal predecessors, (5688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 5688 transitions. [2021-07-09 23:00:56,269 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 5688 transitions. Word has length 48 [2021-07-09 23:00:56,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:56,269 INFO L482 AbstractCegarLoop]: Abstraction has 2832 states and 5688 transitions. [2021-07-09 23:00:56,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:56,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 5688 transitions. [2021-07-09 23:00:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:56,273 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:56,273 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:56,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-09 23:00:56,273 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:56,274 INFO L82 PathProgramCache]: Analyzing trace with hash -777017338, now seen corresponding path program 35 times [2021-07-09 23:00:56,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:56,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68396116] [2021-07-09 23:00:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:56,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:56,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:56,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:56,314 INFO L142 QuantifierPusher]: treesize reduction 8, result has 68.0 percent of original size [2021-07-09 23:00:56,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 23:00:56,323 INFO L142 QuantifierPusher]: treesize reduction 21, result has 55.3 percent of original size [2021-07-09 23:00:56,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-09 23:00:56,328 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-07-09 23:00:56,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:56,333 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-07-09 23:00:56,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:56,341 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-07-09 23:00:56,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:56,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:56,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:56,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68396116] [2021-07-09 23:00:56,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68396116] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:56,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:56,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:00:56,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561870737] [2021-07-09 23:00:56,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:00:56,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:56,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:00:56,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:00:56,348 INFO L87 Difference]: Start difference. First operand 2832 states and 5688 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:56,457 INFO L93 Difference]: Finished difference Result 2656 states and 5157 transitions. [2021-07-09 23:00:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 23:00:56,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:56,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:56,461 INFO L225 Difference]: With dead ends: 2656 [2021-07-09 23:00:56,461 INFO L226 Difference]: Without dead ends: 2140 [2021-07-09 23:00:56,461 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 34.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:00:56,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-07-09 23:00:56,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1737. [2021-07-09 23:00:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1736 states have (on average 1.9855990783410138) internal successors, (3447), 1736 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:56,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 3447 transitions. [2021-07-09 23:00:56,504 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 3447 transitions. Word has length 48 [2021-07-09 23:00:56,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:56,504 INFO L482 AbstractCegarLoop]: Abstraction has 1737 states and 3447 transitions. [2021-07-09 23:00:56,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:56,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 3447 transitions. [2021-07-09 23:00:56,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:56,506 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:56,506 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:56,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-09 23:00:56,506 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:56,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:56,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1445474532, now seen corresponding path program 36 times [2021-07-09 23:00:56,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:56,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465221366] [2021-07-09 23:00:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:56,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:56,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:56,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:56,570 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-07-09 23:00:56,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-09 23:00:56,597 INFO L142 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size [2021-07-09 23:00:56,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-07-09 23:00:56,625 INFO L142 QuantifierPusher]: treesize reduction 26, result has 39.5 percent of original size [2021-07-09 23:00:56,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 23:00:56,635 INFO L142 QuantifierPusher]: treesize reduction 24, result has 41.5 percent of original size [2021-07-09 23:00:56,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 23:00:56,647 INFO L142 QuantifierPusher]: treesize reduction 24, result has 27.3 percent of original size [2021-07-09 23:00:56,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:56,654 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-07-09 23:00:56,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:56,655 INFO L142 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size [2021-07-09 23:00:56,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:56,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:56,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:56,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465221366] [2021-07-09 23:00:56,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465221366] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:56,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:56,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:00:56,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506896714] [2021-07-09 23:00:56,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:00:56,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:56,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:00:56,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:00:56,657 INFO L87 Difference]: Start difference. First operand 1737 states and 3447 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:56,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:56,888 INFO L93 Difference]: Finished difference Result 2105 states and 4140 transitions. [2021-07-09 23:00:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 23:00:56,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:56,890 INFO L225 Difference]: With dead ends: 2105 [2021-07-09 23:00:56,890 INFO L226 Difference]: Without dead ends: 2018 [2021-07-09 23:00:56,891 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 139.7ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:56,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2021-07-09 23:00:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1726. [2021-07-09 23:00:56,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1725 states have (on average 1.983768115942029) internal successors, (3422), 1725 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 3422 transitions. [2021-07-09 23:00:56,914 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 3422 transitions. Word has length 48 [2021-07-09 23:00:56,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:56,914 INFO L482 AbstractCegarLoop]: Abstraction has 1726 states and 3422 transitions. [2021-07-09 23:00:56,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 3422 transitions. [2021-07-09 23:00:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:56,916 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:56,916 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:56,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-09 23:00:56,916 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:56,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:56,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1429783800, now seen corresponding path program 37 times [2021-07-09 23:00:56,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:56,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620061298] [2021-07-09 23:00:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:56,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:56,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:56,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:56,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:56,965 INFO L142 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size [2021-07-09 23:00:56,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-07-09 23:00:57,000 INFO L142 QuantifierPusher]: treesize reduction 33, result has 59.8 percent of original size [2021-07-09 23:00:57,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-07-09 23:00:57,022 INFO L142 QuantifierPusher]: treesize reduction 37, result has 53.8 percent of original size [2021-07-09 23:00:57,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-09 23:00:57,066 INFO L142 QuantifierPusher]: treesize reduction 26, result has 52.7 percent of original size [2021-07-09 23:00:57,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-09 23:00:57,088 INFO L142 QuantifierPusher]: treesize reduction 38, result has 38.7 percent of original size [2021-07-09 23:00:57,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-09 23:00:57,105 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-07-09 23:00:57,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:57,109 INFO L142 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size [2021-07-09 23:00:57,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:57,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:57,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:57,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:57,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620061298] [2021-07-09 23:00:57,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620061298] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:57,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:57,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:00:57,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353832036] [2021-07-09 23:00:57,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:00:57,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:57,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:00:57,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:00:57,111 INFO L87 Difference]: Start difference. First operand 1726 states and 3422 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:57,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:57,346 INFO L93 Difference]: Finished difference Result 1974 states and 3893 transitions. [2021-07-09 23:00:57,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 23:00:57,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:57,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:57,348 INFO L225 Difference]: With dead ends: 1974 [2021-07-09 23:00:57,348 INFO L226 Difference]: Without dead ends: 1906 [2021-07-09 23:00:57,348 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 237.6ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:00:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-07-09 23:00:57,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1714. [2021-07-09 23:00:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1713 states have (on average 1.9830706363105663) internal successors, (3397), 1713 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 3397 transitions. [2021-07-09 23:00:57,369 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 3397 transitions. Word has length 48 [2021-07-09 23:00:57,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:57,369 INFO L482 AbstractCegarLoop]: Abstraction has 1714 states and 3397 transitions. [2021-07-09 23:00:57,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:57,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 3397 transitions. [2021-07-09 23:00:57,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:57,371 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:57,371 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:57,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-09 23:00:57,371 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:57,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:57,372 INFO L82 PathProgramCache]: Analyzing trace with hash -593042646, now seen corresponding path program 38 times [2021-07-09 23:00:57,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:57,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610448620] [2021-07-09 23:00:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:57,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:57,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:57,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:57,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:57,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:57,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:57,404 INFO L142 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size [2021-07-09 23:00:57,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-07-09 23:00:57,437 INFO L142 QuantifierPusher]: treesize reduction 33, result has 59.8 percent of original size [2021-07-09 23:00:57,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-07-09 23:00:57,458 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.9 percent of original size [2021-07-09 23:00:57,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-09 23:00:57,477 INFO L142 QuantifierPusher]: treesize reduction 16, result has 62.8 percent of original size [2021-07-09 23:00:57,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-09 23:00:57,498 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-07-09 23:00:57,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-09 23:00:57,511 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-07-09 23:00:57,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:57,512 INFO L142 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size [2021-07-09 23:00:57,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:57,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:57,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:57,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:57,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610448620] [2021-07-09 23:00:57,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610448620] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:57,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:57,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:00:57,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869110535] [2021-07-09 23:00:57,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:00:57,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:57,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:00:57,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:00:57,514 INFO L87 Difference]: Start difference. First operand 1714 states and 3397 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:57,771 INFO L93 Difference]: Finished difference Result 2072 states and 4073 transitions. [2021-07-09 23:00:57,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 23:00:57,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:57,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:57,773 INFO L225 Difference]: With dead ends: 2072 [2021-07-09 23:00:57,774 INFO L226 Difference]: Without dead ends: 1965 [2021-07-09 23:00:57,774 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 202.9ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:00:57,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-07-09 23:00:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1694. [2021-07-09 23:00:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1693 states have (on average 1.9875959834613113) internal successors, (3365), 1693 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 3365 transitions. [2021-07-09 23:00:57,794 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 3365 transitions. Word has length 48 [2021-07-09 23:00:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:57,794 INFO L482 AbstractCegarLoop]: Abstraction has 1694 states and 3365 transitions. [2021-07-09 23:00:57,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 3365 transitions. [2021-07-09 23:00:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:57,796 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:57,796 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:57,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-09 23:00:57,796 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:57,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:57,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1967998914, now seen corresponding path program 39 times [2021-07-09 23:00:57,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:57,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064165995] [2021-07-09 23:00:57,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:57,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:57,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:57,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:57,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:57,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:57,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:57,828 INFO L142 QuantifierPusher]: treesize reduction 29, result has 62.8 percent of original size [2021-07-09 23:00:57,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-07-09 23:00:57,860 INFO L142 QuantifierPusher]: treesize reduction 7, result has 86.0 percent of original size [2021-07-09 23:00:57,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-09 23:00:57,891 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.9 percent of original size [2021-07-09 23:00:57,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-09 23:00:57,911 INFO L142 QuantifierPusher]: treesize reduction 16, result has 62.8 percent of original size [2021-07-09 23:00:57,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-09 23:00:57,933 INFO L142 QuantifierPusher]: treesize reduction 21, result has 51.2 percent of original size [2021-07-09 23:00:57,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-09 23:00:57,947 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-07-09 23:00:57,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:57,948 INFO L142 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size [2021-07-09 23:00:57,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:57,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:57,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:57,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:57,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064165995] [2021-07-09 23:00:57,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064165995] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:57,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:57,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:00:57,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111425193] [2021-07-09 23:00:57,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:00:57,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:57,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:00:57,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:00:57,950 INFO L87 Difference]: Start difference. First operand 1694 states and 3365 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:58,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:58,240 INFO L93 Difference]: Finished difference Result 2302 states and 4629 transitions. [2021-07-09 23:00:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:00:58,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:58,242 INFO L225 Difference]: With dead ends: 2302 [2021-07-09 23:00:58,242 INFO L226 Difference]: Without dead ends: 2201 [2021-07-09 23:00:58,243 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 252.5ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:00:58,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2021-07-09 23:00:58,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 1655. [2021-07-09 23:00:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 1.9933494558645708) internal successors, (3297), 1654 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 3297 transitions. [2021-07-09 23:00:58,280 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 3297 transitions. Word has length 48 [2021-07-09 23:00:58,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:58,281 INFO L482 AbstractCegarLoop]: Abstraction has 1655 states and 3297 transitions. [2021-07-09 23:00:58,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 3297 transitions. [2021-07-09 23:00:58,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:58,282 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:58,282 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:58,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-09 23:00:58,283 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:58,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:58,283 INFO L82 PathProgramCache]: Analyzing trace with hash 586810438, now seen corresponding path program 40 times [2021-07-09 23:00:58,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:58,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448499745] [2021-07-09 23:00:58,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:58,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:58,351 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-07-09 23:00:58,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:58,357 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-07-09 23:00:58,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:58,362 INFO L142 QuantifierPusher]: treesize reduction 8, result has 27.3 percent of original size [2021-07-09 23:00:58,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:00:58,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:00:58,377 INFO L142 QuantifierPusher]: treesize reduction 12, result has 66.7 percent of original size [2021-07-09 23:00:58,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-09 23:00:58,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-09 23:00:58,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:58,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:58,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448499745] [2021-07-09 23:00:58,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448499745] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:58,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:58,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:00:58,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103656645] [2021-07-09 23:00:58,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:00:58,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:58,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:00:58,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:00:58,430 INFO L87 Difference]: Start difference. First operand 1655 states and 3297 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:58,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:58,588 INFO L93 Difference]: Finished difference Result 1935 states and 3857 transitions. [2021-07-09 23:00:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 23:00:58,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:58,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:58,590 INFO L225 Difference]: With dead ends: 1935 [2021-07-09 23:00:58,590 INFO L226 Difference]: Without dead ends: 1728 [2021-07-09 23:00:58,590 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 132.9ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-07-09 23:00:58,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2021-07-09 23:00:58,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1453. [2021-07-09 23:00:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1452 states have (on average 2.0516528925619837) internal successors, (2979), 1452 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:58,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2979 transitions. [2021-07-09 23:00:58,606 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2979 transitions. Word has length 48 [2021-07-09 23:00:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:58,606 INFO L482 AbstractCegarLoop]: Abstraction has 1453 states and 2979 transitions. [2021-07-09 23:00:58,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2979 transitions. [2021-07-09 23:00:58,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:58,607 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:58,607 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:58,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-09 23:00:58,608 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:58,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:58,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1951114426, now seen corresponding path program 41 times [2021-07-09 23:00:58,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:58,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262633098] [2021-07-09 23:00:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:58,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:58,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-07-09 23:00:58,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-09 23:00:58,648 INFO L142 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-07-09 23:00:58,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-07-09 23:00:58,664 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.0 percent of original size [2021-07-09 23:00:58,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-07-09 23:00:58,680 INFO L142 QuantifierPusher]: treesize reduction 17, result has 62.2 percent of original size [2021-07-09 23:00:58,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-07-09 23:00:58,694 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.1 percent of original size [2021-07-09 23:00:58,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-07-09 23:00:58,711 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size [2021-07-09 23:00:58,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-07-09 23:00:58,729 INFO L142 QuantifierPusher]: treesize reduction 39, result has 35.0 percent of original size [2021-07-09 23:00:58,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-07-09 23:00:58,743 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-07-09 23:00:58,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:58,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:58,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:58,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262633098] [2021-07-09 23:00:58,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262633098] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:58,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:58,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 23:00:58,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320720647] [2021-07-09 23:00:58,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 23:00:58,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:58,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 23:00:58,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:58,745 INFO L87 Difference]: Start difference. First operand 1453 states and 2979 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:58,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:58,950 INFO L93 Difference]: Finished difference Result 1599 states and 3245 transitions. [2021-07-09 23:00:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 23:00:58,950 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:58,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:58,952 INFO L225 Difference]: With dead ends: 1599 [2021-07-09 23:00:58,952 INFO L226 Difference]: Without dead ends: 1572 [2021-07-09 23:00:58,952 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 196.1ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-07-09 23:00:58,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-07-09 23:00:58,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1471. [2021-07-09 23:00:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1470 states have (on average 2.0564625850340135) internal successors, (3023), 1470 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 3023 transitions. [2021-07-09 23:00:58,967 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 3023 transitions. Word has length 48 [2021-07-09 23:00:58,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:58,967 INFO L482 AbstractCegarLoop]: Abstraction has 1471 states and 3023 transitions. [2021-07-09 23:00:58,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 3023 transitions. [2021-07-09 23:00:58,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:58,969 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:58,969 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:58,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-09 23:00:58,969 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:58,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:58,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1128884470, now seen corresponding path program 42 times [2021-07-09 23:00:58,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:58,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504333668] [2021-07-09 23:00:58,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:58,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:58,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:58,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:58,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:58,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:58,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:59,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:59,011 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-09 23:00:59,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:59,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:59,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:59,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504333668] [2021-07-09 23:00:59,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504333668] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:59,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:59,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:00:59,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297182445] [2021-07-09 23:00:59,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:00:59,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:59,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:00:59,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:00:59,020 INFO L87 Difference]: Start difference. First operand 1471 states and 3023 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:59,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:59,126 INFO L93 Difference]: Finished difference Result 1519 states and 3091 transitions. [2021-07-09 23:00:59,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 23:00:59,127 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:59,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:59,128 INFO L225 Difference]: With dead ends: 1519 [2021-07-09 23:00:59,128 INFO L226 Difference]: Without dead ends: 1157 [2021-07-09 23:00:59,129 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 100.5ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-09 23:00:59,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-07-09 23:00:59,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1129. [2021-07-09 23:00:59,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1128 states have (on average 1.9937943262411348) internal successors, (2249), 1128 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 2249 transitions. [2021-07-09 23:00:59,140 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 2249 transitions. Word has length 48 [2021-07-09 23:00:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:59,140 INFO L482 AbstractCegarLoop]: Abstraction has 1129 states and 2249 transitions. [2021-07-09 23:00:59,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 2249 transitions. [2021-07-09 23:00:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:59,141 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:59,141 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:59,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-09 23:00:59,142 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:59,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:59,142 INFO L82 PathProgramCache]: Analyzing trace with hash -776113352, now seen corresponding path program 43 times [2021-07-09 23:00:59,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:59,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130143749] [2021-07-09 23:00:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:59,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:59,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:59,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-07-09 23:00:59,200 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-07-09 23:00:59,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:00:59,214 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-07-09 23:00:59,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:59,226 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-07-09 23:00:59,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:59,236 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-07-09 23:00:59,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:59,237 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-07-09 23:00:59,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:00:59,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:59,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:59,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:59,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130143749] [2021-07-09 23:00:59,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130143749] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:59,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:59,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-09 23:00:59,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086849994] [2021-07-09 23:00:59,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-09 23:00:59,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:59,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-09 23:00:59,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:00:59,257 INFO L87 Difference]: Start difference. First operand 1129 states and 2249 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:59,383 INFO L93 Difference]: Finished difference Result 1307 states and 2589 transitions. [2021-07-09 23:00:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:00:59,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:59,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:59,385 INFO L225 Difference]: With dead ends: 1307 [2021-07-09 23:00:59,385 INFO L226 Difference]: Without dead ends: 875 [2021-07-09 23:00:59,386 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 113.0ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:00:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-07-09 23:00:59,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 866. [2021-07-09 23:00:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 1.9745664739884392) internal successors, (1708), 865 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1708 transitions. [2021-07-09 23:00:59,397 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1708 transitions. Word has length 48 [2021-07-09 23:00:59,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:59,398 INFO L482 AbstractCegarLoop]: Abstraction has 866 states and 1708 transitions. [2021-07-09 23:00:59,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:59,398 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1708 transitions. [2021-07-09 23:00:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:59,420 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:59,420 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:59,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-09 23:00:59,420 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:59,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:59,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1777274646, now seen corresponding path program 44 times [2021-07-09 23:00:59,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:59,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962703464] [2021-07-09 23:00:59,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:59,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:59,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:59,440 INFO L142 QuantifierPusher]: treesize reduction 13, result has 55.2 percent of original size [2021-07-09 23:00:59,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:59,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:00:59,451 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-07-09 23:00:59,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:59,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:59,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:59,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:59,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962703464] [2021-07-09 23:00:59,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962703464] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:59,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:59,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:00:59,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258839593] [2021-07-09 23:00:59,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:00:59,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:59,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:00:59,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:00:59,465 INFO L87 Difference]: Start difference. First operand 866 states and 1708 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:59,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:59,573 INFO L93 Difference]: Finished difference Result 1045 states and 2075 transitions. [2021-07-09 23:00:59,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 23:00:59,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:59,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:59,574 INFO L225 Difference]: With dead ends: 1045 [2021-07-09 23:00:59,574 INFO L226 Difference]: Without dead ends: 621 [2021-07-09 23:00:59,574 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 63.8ms TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:00:59,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-07-09 23:00:59,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 595. [2021-07-09 23:00:59,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 594 states have (on average 1.936026936026936) internal successors, (1150), 594 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:59,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 1150 transitions. [2021-07-09 23:00:59,580 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 1150 transitions. Word has length 48 [2021-07-09 23:00:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:59,580 INFO L482 AbstractCegarLoop]: Abstraction has 595 states and 1150 transitions. [2021-07-09 23:00:59,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:59,580 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 1150 transitions. [2021-07-09 23:00:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:59,581 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:59,581 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:59,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-09 23:00:59,581 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:59,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:59,582 INFO L82 PathProgramCache]: Analyzing trace with hash 806901600, now seen corresponding path program 45 times [2021-07-09 23:00:59,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:59,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844559956] [2021-07-09 23:00:59,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:59,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:59,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:59,604 INFO L142 QuantifierPusher]: treesize reduction 18, result has 37.9 percent of original size [2021-07-09 23:00:59,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-09 23:00:59,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:00:59,610 INFO L142 QuantifierPusher]: treesize reduction 15, result has 31.8 percent of original size [2021-07-09 23:00:59,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:59,615 INFO L142 QuantifierPusher]: treesize reduction 15, result has 37.5 percent of original size [2021-07-09 23:00:59,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:59,621 INFO L142 QuantifierPusher]: treesize reduction 16, result has 30.4 percent of original size [2021-07-09 23:00:59,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:59,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:59,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:59,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:59,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844559956] [2021-07-09 23:00:59,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844559956] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:59,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:59,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 23:00:59,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931415338] [2021-07-09 23:00:59,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 23:00:59,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:59,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 23:00:59,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-07-09 23:00:59,629 INFO L87 Difference]: Start difference. First operand 595 states and 1150 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:59,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:59,732 INFO L93 Difference]: Finished difference Result 1129 states and 2226 transitions. [2021-07-09 23:00:59,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 23:00:59,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:00:59,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:59,734 INFO L225 Difference]: With dead ends: 1129 [2021-07-09 23:00:59,734 INFO L226 Difference]: Without dead ends: 911 [2021-07-09 23:00:59,734 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:59,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-07-09 23:00:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 581. [2021-07-09 23:00:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 1.9396551724137931) internal successors, (1125), 580 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:59,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1125 transitions. [2021-07-09 23:00:59,741 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1125 transitions. Word has length 48 [2021-07-09 23:00:59,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:59,741 INFO L482 AbstractCegarLoop]: Abstraction has 581 states and 1125 transitions. [2021-07-09 23:00:59,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:00:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1125 transitions. [2021-07-09 23:00:59,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:00:59,742 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:59,742 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:59,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-09 23:00:59,742 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:59,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:59,742 INFO L82 PathProgramCache]: Analyzing trace with hash -851302822, now seen corresponding path program 46 times [2021-07-09 23:00:59,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:59,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674830276] [2021-07-09 23:00:59,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:59,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:00:59,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:59,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:00:59,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:59,787 INFO L142 QuantifierPusher]: treesize reduction 21, result has 50.0 percent of original size [2021-07-09 23:00:59,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-07-09 23:00:59,791 INFO L142 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size [2021-07-09 23:00:59,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-09 23:00:59,804 INFO L142 QuantifierPusher]: treesize reduction 11, result has 67.6 percent of original size [2021-07-09 23:00:59,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-09 23:00:59,818 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.9 percent of original size [2021-07-09 23:00:59,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-07-09 23:00:59,839 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-07-09 23:00:59,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-07-09 23:00:59,859 INFO L142 QuantifierPusher]: treesize reduction 8, result has 77.1 percent of original size [2021-07-09 23:00:59,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-09 23:00:59,882 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-07-09 23:00:59,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:59,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:59,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:59,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:59,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674830276] [2021-07-09 23:00:59,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674830276] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:59,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:59,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 23:00:59,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361437838] [2021-07-09 23:00:59,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 23:00:59,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:59,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 23:00:59,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:59,892 INFO L87 Difference]: Start difference. First operand 581 states and 1125 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:00,117 INFO L93 Difference]: Finished difference Result 1099 states and 2181 transitions. [2021-07-09 23:01:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 23:01:00,118 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:01:00,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:00,119 INFO L225 Difference]: With dead ends: 1099 [2021-07-09 23:01:00,119 INFO L226 Difference]: Without dead ends: 974 [2021-07-09 23:01:00,119 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 215.7ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-07-09 23:01:00,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-07-09 23:01:00,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 654. [2021-07-09 23:01:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 1.9509954058192955) internal successors, (1274), 653 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1274 transitions. [2021-07-09 23:01:00,126 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1274 transitions. Word has length 48 [2021-07-09 23:01:00,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:00,126 INFO L482 AbstractCegarLoop]: Abstraction has 654 states and 1274 transitions. [2021-07-09 23:01:00,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1274 transitions. [2021-07-09 23:01:00,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:01:00,127 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:00,127 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:00,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-09 23:01:00,127 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:00,128 INFO L82 PathProgramCache]: Analyzing trace with hash 379174100, now seen corresponding path program 47 times [2021-07-09 23:01:00,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:00,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315203150] [2021-07-09 23:01:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:00,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:01:00,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:00,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:00,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:00,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:01:00,164 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-07-09 23:01:00,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:01:00,171 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-07-09 23:01:00,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:01:00,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:00,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:00,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315203150] [2021-07-09 23:01:00,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315203150] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:00,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:00,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:01:00,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715301865] [2021-07-09 23:01:00,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:01:00,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:00,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:01:00,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:01:00,181 INFO L87 Difference]: Start difference. First operand 654 states and 1274 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:00,309 INFO L93 Difference]: Finished difference Result 1026 states and 1994 transitions. [2021-07-09 23:01:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 23:01:00,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:01:00,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:00,310 INFO L225 Difference]: With dead ends: 1026 [2021-07-09 23:01:00,310 INFO L226 Difference]: Without dead ends: 731 [2021-07-09 23:01:00,310 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-07-09 23:01:00,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-07-09 23:01:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 569. [2021-07-09 23:01:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.926056338028169) internal successors, (1094), 568 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1094 transitions. [2021-07-09 23:01:00,316 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1094 transitions. Word has length 48 [2021-07-09 23:01:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:00,316 INFO L482 AbstractCegarLoop]: Abstraction has 569 states and 1094 transitions. [2021-07-09 23:01:00,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,316 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1094 transitions. [2021-07-09 23:01:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:01:00,317 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:00,317 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:00,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-09 23:01:00,317 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:00,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:00,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1995938908, now seen corresponding path program 48 times [2021-07-09 23:01:00,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:00,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929323377] [2021-07-09 23:01:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:00,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-09 23:01:00,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:01:00,343 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-07-09 23:01:00,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-07-09 23:01:00,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-09 23:01:00,351 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-07-09 23:01:00,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-09 23:01:00,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:01:00,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:01:00,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:00,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:00,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:00,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:01:00,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:00,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:00,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:00,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929323377] [2021-07-09 23:01:00,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929323377] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:00,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:00,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 23:01:00,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474785390] [2021-07-09 23:01:00,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 23:01:00,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:00,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 23:01:00,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:01:00,410 INFO L87 Difference]: Start difference. First operand 569 states and 1094 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:00,545 INFO L93 Difference]: Finished difference Result 858 states and 1677 transitions. [2021-07-09 23:01:00,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 23:01:00,545 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:01:00,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:00,546 INFO L225 Difference]: With dead ends: 858 [2021-07-09 23:01:00,546 INFO L226 Difference]: Without dead ends: 442 [2021-07-09 23:01:00,546 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-07-09 23:01:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-07-09 23:01:00,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-07-09 23:01:00,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.9206349206349207) internal successors, (847), 441 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 847 transitions. [2021-07-09 23:01:00,550 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 847 transitions. Word has length 48 [2021-07-09 23:01:00,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:00,550 INFO L482 AbstractCegarLoop]: Abstraction has 442 states and 847 transitions. [2021-07-09 23:01:00,550 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 847 transitions. [2021-07-09 23:01:00,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:01:00,551 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:00,551 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:00,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-09 23:01:00,551 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:00,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:00,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1158444418, now seen corresponding path program 49 times [2021-07-09 23:01:00,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:00,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968193496] [2021-07-09 23:01:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:00,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:00,570 INFO L142 QuantifierPusher]: treesize reduction 38, result has 44.9 percent of original size [2021-07-09 23:01:00,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-07-09 23:01:00,585 INFO L142 QuantifierPusher]: treesize reduction 12, result has 20.0 percent of original size [2021-07-09 23:01:00,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:00,589 INFO L142 QuantifierPusher]: treesize reduction 19, result has 36.7 percent of original size [2021-07-09 23:01:00,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-09 23:01:00,598 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-07-09 23:01:00,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:00,604 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-07-09 23:01:00,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:00,611 INFO L142 QuantifierPusher]: treesize reduction 76, result has 24.0 percent of original size [2021-07-09 23:01:00,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-09 23:01:00,624 INFO L142 QuantifierPusher]: treesize reduction 24, result has 35.1 percent of original size [2021-07-09 23:01:00,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-09 23:01:00,634 INFO L142 QuantifierPusher]: treesize reduction 35, result has 30.0 percent of original size [2021-07-09 23:01:00,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:01:00,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:00,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:00,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968193496] [2021-07-09 23:01:00,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968193496] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:00,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:00,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-09 23:01:00,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681215362] [2021-07-09 23:01:00,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 23:01:00,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:00,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 23:01:00,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:01:00,644 INFO L87 Difference]: Start difference. First operand 442 states and 847 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:00,824 INFO L93 Difference]: Finished difference Result 504 states and 972 transitions. [2021-07-09 23:01:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 23:01:00,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:01:00,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:00,825 INFO L225 Difference]: With dead ends: 504 [2021-07-09 23:01:00,825 INFO L226 Difference]: Without dead ends: 181 [2021-07-09 23:01:00,825 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 169.9ms TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-07-09 23:01:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-07-09 23:01:00,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-07-09 23:01:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.8166666666666667) internal successors, (327), 180 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 327 transitions. [2021-07-09 23:01:00,827 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 327 transitions. Word has length 48 [2021-07-09 23:01:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:00,827 INFO L482 AbstractCegarLoop]: Abstraction has 181 states and 327 transitions. [2021-07-09 23:01:00,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 327 transitions. [2021-07-09 23:01:00,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 23:01:00,827 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:01:00,827 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:01:00,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-09 23:01:00,828 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:01:00,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:01:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash -854759058, now seen corresponding path program 50 times [2021-07-09 23:01:00,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:01:00,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076857183] [2021-07-09 23:01:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:01:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:01:00,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:01:00,845 INFO L142 QuantifierPusher]: treesize reduction 33, result has 17.5 percent of original size [2021-07-09 23:01:00,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:01:00,850 INFO L142 QuantifierPusher]: treesize reduction 33, result has 23.3 percent of original size [2021-07-09 23:01:00,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:01:00,856 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-07-09 23:01:00,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-09 23:01:00,866 INFO L142 QuantifierPusher]: treesize reduction 14, result has 51.7 percent of original size [2021-07-09 23:01:00,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-07-09 23:01:00,870 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.9 percent of original size [2021-07-09 23:01:00,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-07-09 23:01:00,880 INFO L142 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size [2021-07-09 23:01:00,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-09 23:01:00,891 INFO L142 QuantifierPusher]: treesize reduction 17, result has 34.6 percent of original size [2021-07-09 23:01:00,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:01:00,899 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-07-09 23:01:00,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:01:00,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:01:00,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:01:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:01:00,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:01:00,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076857183] [2021-07-09 23:01:00,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076857183] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:01:00,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:01:00,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 23:01:00,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246775050] [2021-07-09 23:01:00,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-09 23:01:00,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:01:00,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-09 23:01:00,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:01:00,901 INFO L87 Difference]: Start difference. First operand 181 states and 327 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:01:00,949 INFO L93 Difference]: Finished difference Result 157 states and 283 transitions. [2021-07-09 23:01:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 23:01:00,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 23:01:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:01:00,950 INFO L225 Difference]: With dead ends: 157 [2021-07-09 23:01:00,950 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 23:01:00,950 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-07-09 23:01:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 23:01:00,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 23:01:00,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 23:01:00,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-07-09 23:01:00,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:01:00,951 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 23:01:00,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:01:00,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 23:01:00,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 23:01:00,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-07-09 23:01:00,952 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 23:01:00,954 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 11:01:00 BasicIcfg [2021-07-09 23:01:00,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 23:01:00,954 INFO L168 Benchmark]: Toolchain (without parser) took 18560.88 ms. Allocated memory was 192.9 MB in the beginning and 829.4 MB in the end (delta: 636.5 MB). Free memory was 172.1 MB in the beginning and 360.6 MB in the end (delta: -188.5 MB). Peak memory consumption was 449.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:00,954 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.43 ms. Allocated memory is still 192.9 MB. Free memory is still 173.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 23:01:00,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.12 ms. Allocated memory is still 192.9 MB. Free memory was 171.9 MB in the beginning and 170.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:00,954 INFO L168 Benchmark]: Boogie Preprocessor took 11.17 ms. Allocated memory is still 192.9 MB. Free memory was 170.4 MB in the beginning and 169.5 MB in the end (delta: 865.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:00,954 INFO L168 Benchmark]: RCFGBuilder took 276.27 ms. Allocated memory is still 192.9 MB. Free memory was 169.4 MB in the beginning and 155.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:00,954 INFO L168 Benchmark]: TraceAbstraction took 18250.01 ms. Allocated memory was 192.9 MB in the beginning and 829.4 MB in the end (delta: 636.5 MB). Free memory was 154.5 MB in the beginning and 360.6 MB in the end (delta: -206.2 MB). Peak memory consumption was 431.2 MB. Max. memory is 8.0 GB. [2021-07-09 23:01:00,955 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 0.43 ms. Allocated memory is still 192.9 MB. Free memory is still 173.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.12 ms. Allocated memory is still 192.9 MB. Free memory was 171.9 MB in the beginning and 170.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.17 ms. Allocated memory is still 192.9 MB. Free memory was 170.4 MB in the beginning and 169.5 MB in the end (delta: 865.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 276.27 ms. Allocated memory is still 192.9 MB. Free memory was 169.4 MB in the beginning and 155.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18250.01 ms. Allocated memory was 192.9 MB in the beginning and 829.4 MB in the end (delta: 636.5 MB). Free memory was 154.5 MB in the beginning and 360.6 MB in the end (delta: -206.2 MB). Peak memory consumption was 431.2 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: 7333, positive: 6624, positive conditional: 6624, positive unconditional: 0, negative: 709, negative conditional: 709, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7333, positive: 6624, positive conditional: 0, positive unconditional: 6624, negative: 709, negative conditional: 0, negative unconditional: 709, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 740, positive: 670, positive conditional: 0, positive unconditional: 670, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 740, positive: 654, positive conditional: 0, positive unconditional: 654, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 86, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 188, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 143, negative conditional: 0, negative unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7333, positive: 5954, positive conditional: 0, positive unconditional: 5954, negative: 639, negative conditional: 0, negative unconditional: 639, unknown: 740, unknown conditional: 0, unknown unconditional: 740] , Statistics on independence cache: Total cache size (in pairs): 740, Positive cache size: 670, Positive conditional cache size: 0, Positive unconditional cache size: 670, Negative cache size: 70, Negative conditional cache size: 0, Negative unconditional cache size: 70, Independence queries for same thread: 0 - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 99 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18133.0ms, OverallIterations: 50, TraceHistogramMax: 1, EmptinessCheckTime: 218.9ms, AutomataDifference: 9496.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 549.6ms, PartialOrderReductionTime: 534.3ms, HoareTripleCheckerStatistics: 4418 SDtfs, 6823 SDslu, 15511 SDs, 0 SdLazy, 10531 SolverSat, 1626 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4639.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 653 GetRequests, 97 SyntacticMatches, 43 SemanticMatches, 513 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 5444.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4040occurred in iteration=14, InterpolantAutomatonStates: 506, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2623.5ms AutomataMinimizationTime, 50 MinimizatonAttempts, 25747 StatesRemovedByMinimization, 45 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 45.4ms SsaConstructionTime, 317.4ms SatisfiabilityAnalysisTime, 4586.5ms InterpolantComputationTime, 2400 NumberOfCodeBlocks, 2400 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 2350 ConstructedInterpolants, 0 QuantifiedInterpolants, 15488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 50 InterpolantComputations, 50 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...