/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 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 17:11:21,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 17:11:21,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 17:11:21,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-16 17:11:21,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 17:11:21,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 17:11:21,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 17:11:21,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 17:11:21,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 17:11:21,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 17:11:21,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 17:11:21,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 17:11:21,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 17:11:21,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 17:11:21,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 17:11:21,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 17:11:21,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-16 17:11:21,688 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 [2021-06-16 17:11:21,724 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 17:11:21,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 17:11:21,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 17:11:21,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 17:11:21,726 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 17:11:21,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 17:11:21,727 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 17:11:21,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 17:11:21,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 17:11:21,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 17:11:21,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 17:11:21,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 17:11:21,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 17:11:21,728 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 17:11:21,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 17:11:21,728 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 17:11:21,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 17:11:21,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 17:11:21,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 17:11:21,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 17:11:21,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 17:11:21,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 17:11:21,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 17:11:21,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 17:11:21,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 17:11:21,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 17:11:21,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 17:11:21,730 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 17:11:21,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 17:11:21,730 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 17:11:21,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 17:11:22,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 17:11:22,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 17:11:22,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 17:11:22,088 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 17:11:22,089 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 17:11:22,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-06-16 17:11:22,104 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-06-16 17:11:22,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 17:11:22,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 17:11:22,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 17:11:22,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 17:11:22,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 17:11:22,159 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 16.06 05:11:22" (1/1) ... [2021-06-16 17:11:22,168 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 16.06 05:11:22" (1/1) ... [2021-06-16 17:11:22,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 17:11:22,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 17:11:22,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 17:11:22,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 17:11:22,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:11:22" (1/1) ... [2021-06-16 17:11:22,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:11:22" (1/1) ... [2021-06-16 17:11:22,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:11:22" (1/1) ... [2021-06-16 17:11:22,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:11:22" (1/1) ... [2021-06-16 17:11:22,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:11:22" (1/1) ... [2021-06-16 17:11:22,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:11:22" (1/1) ... [2021-06-16 17:11:22,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:11:22" (1/1) ... [2021-06-16 17:11:22,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 17:11:22,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 17:11:22,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 17:11:22,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 17:11:22,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:11:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 17:11:22,282 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-16 17:11:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 17:11:22,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 17:11:22,283 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-16 17:11:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 17:11:22,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 17:11:22,283 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 17:11:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 17:11:22,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 17:11:22,284 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-16 17:11:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-16 17:11:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-16 17:11:22,285 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 17:11:22,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 17:11:22,490 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 17:11:22,492 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 05:11:22 BoogieIcfgContainer [2021-06-16 17:11:22,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 17:11:22,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 17:11:22,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 17:11:22,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 17:11:22,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:11:22" (1/2) ... [2021-06-16 17:11:22,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2437853b and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 05:11:22, skipping insertion in model container [2021-06-16 17:11:22,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 05:11:22" (2/2) ... [2021-06-16 17:11:22,517 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-06-16 17:11:22,522 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 17:11:22,522 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 17:11:22,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 17:11:22,523 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 17:11:22,557 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-16 17:11:22,574 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-16 17:11:22,589 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 17:11:22,589 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 17:11:22,589 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 17:11:22,589 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 17:11:22,590 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 17:11:22,590 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 17:11:22,590 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 17:11:22,590 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 17:11:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 3171 states, 2792 states have (on average 2.214541547277937) internal successors, (6183), 3170 states have internal predecessors, (6183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:23,321 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:23,322 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:23,322 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:23,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:23,327 INFO L82 PathProgramCache]: Analyzing trace with hash -393577040, now seen corresponding path program 1 times [2021-06-16 17:11:23,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:23,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640901396] [2021-06-16 17:11:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:23,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:23,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:23,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:23,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:23,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:23,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:23,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:23,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640901396] [2021-06-16 17:11:23,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640901396] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:23,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:23,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 17:11:23,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438790269] [2021-06-16 17:11:23,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 17:11:23,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:23,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 17:11:23,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 17:11:23,539 INFO L87 Difference]: Start difference. First operand has 3171 states, 2792 states have (on average 2.214541547277937) internal successors, (6183), 3170 states have internal predecessors, (6183), 0 states have call successors, (0), 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 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:23,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:23,604 INFO L93 Difference]: Finished difference Result 3169 states and 6092 transitions. [2021-06-16 17:11:23,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 17:11:23,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:23,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:23,648 INFO L225 Difference]: With dead ends: 3169 [2021-06-16 17:11:23,649 INFO L226 Difference]: Without dead ends: 2681 [2021-06-16 17:11:23,650 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 17:11:23,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-06-16 17:11:23,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2681. [2021-06-16 17:11:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 2680 states have (on average 2.0742537313432834) internal successors, (5559), 2680 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 5559 transitions. [2021-06-16 17:11:23,940 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 5559 transitions. Word has length 48 [2021-06-16 17:11:23,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:23,940 INFO L482 AbstractCegarLoop]: Abstraction has 2681 states and 5559 transitions. [2021-06-16 17:11:23,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 5559 transitions. [2021-06-16 17:11:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:23,948 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:23,948 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:23,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 17:11:23,948 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:23,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:23,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1237199824, now seen corresponding path program 2 times [2021-06-16 17:11:23,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:23,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574660179] [2021-06-16 17:11:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:24,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:24,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:24,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:24,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:24,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:24,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:24,183 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-16 17:11:24,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:24,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:24,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:24,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574660179] [2021-06-16 17:11:24,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574660179] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:24,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:24,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:24,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054391717] [2021-06-16 17:11:24,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:24,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:24,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:24,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:24,200 INFO L87 Difference]: Start difference. First operand 2681 states and 5559 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:24,427 INFO L93 Difference]: Finished difference Result 3311 states and 6823 transitions. [2021-06-16 17:11:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 17:11:24,429 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:24,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:24,446 INFO L225 Difference]: With dead ends: 3311 [2021-06-16 17:11:24,446 INFO L226 Difference]: Without dead ends: 3229 [2021-06-16 17:11:24,448 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 159.9ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:11:24,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2021-06-16 17:11:24,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 2708. [2021-06-16 17:11:24,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 2707 states have (on average 2.0672330993719985) internal successors, (5596), 2707 states have internal predecessors, (5596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 5596 transitions. [2021-06-16 17:11:24,538 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 5596 transitions. Word has length 48 [2021-06-16 17:11:24,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:24,539 INFO L482 AbstractCegarLoop]: Abstraction has 2708 states and 5596 transitions. [2021-06-16 17:11:24,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:24,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 5596 transitions. [2021-06-16 17:11:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:24,545 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:24,545 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:24,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 17:11:24,545 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:24,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:24,546 INFO L82 PathProgramCache]: Analyzing trace with hash 651694318, now seen corresponding path program 3 times [2021-06-16 17:11:24,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:24,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068622318] [2021-06-16 17:11:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:24,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:24,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:24,686 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-06-16 17:11:24,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:24,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:24,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:24,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:24,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:24,756 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-06-16 17:11:24,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:24,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:24,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:24,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:24,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:24,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068622318] [2021-06-16 17:11:24,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068622318] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:24,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:24,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:11:24,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408840683] [2021-06-16 17:11:24,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:11:24,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:24,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:11:24,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:24,797 INFO L87 Difference]: Start difference. First operand 2708 states and 5596 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:25,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:25,135 INFO L93 Difference]: Finished difference Result 4641 states and 10069 transitions. [2021-06-16 17:11:25,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:11:25,136 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:25,157 INFO L225 Difference]: With dead ends: 4641 [2021-06-16 17:11:25,157 INFO L226 Difference]: Without dead ends: 4641 [2021-06-16 17:11:25,158 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 129.3ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-06-16 17:11:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4641 states. [2021-06-16 17:11:25,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4641 to 3096. [2021-06-16 17:11:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 2.0917609046849757) internal successors, (6474), 3095 states have internal predecessors, (6474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:25,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 6474 transitions. [2021-06-16 17:11:25,302 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 6474 transitions. Word has length 48 [2021-06-16 17:11:25,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:25,302 INFO L482 AbstractCegarLoop]: Abstraction has 3096 states and 6474 transitions. [2021-06-16 17:11:25,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:25,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 6474 transitions. [2021-06-16 17:11:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:25,312 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:25,312 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:25,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 17:11:25,313 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:25,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:25,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1783895254, now seen corresponding path program 4 times [2021-06-16 17:11:25,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:25,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393543625] [2021-06-16 17:11:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:25,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:25,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:25,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:25,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:25,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:25,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:25,456 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-16 17:11:25,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:25,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:25,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:25,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393543625] [2021-06-16 17:11:25,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393543625] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:25,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:25,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:25,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973278565] [2021-06-16 17:11:25,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:25,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:25,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:25,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:25,507 INFO L87 Difference]: Start difference. First operand 3096 states and 6474 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:25,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:25,693 INFO L93 Difference]: Finished difference Result 3816 states and 7937 transitions. [2021-06-16 17:11:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 17:11:25,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:25,708 INFO L225 Difference]: With dead ends: 3816 [2021-06-16 17:11:25,708 INFO L226 Difference]: Without dead ends: 3677 [2021-06-16 17:11:25,709 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 193.4ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:11:25,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2021-06-16 17:11:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3132. [2021-06-16 17:11:25,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 3131 states have (on average 2.0855956563398275) internal successors, (6530), 3131 states have internal predecessors, (6530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 6530 transitions. [2021-06-16 17:11:25,809 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 6530 transitions. Word has length 48 [2021-06-16 17:11:25,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:25,809 INFO L482 AbstractCegarLoop]: Abstraction has 3132 states and 6530 transitions. [2021-06-16 17:11:25,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 6530 transitions. [2021-06-16 17:11:25,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:25,816 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:25,816 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:25,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 17:11:25,816 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:25,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:25,817 INFO L82 PathProgramCache]: Analyzing trace with hash -756394226, now seen corresponding path program 5 times [2021-06-16 17:11:25,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:25,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342920034] [2021-06-16 17:11:25,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:25,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:25,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:25,879 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-06-16 17:11:25,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:25,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:25,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:25,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:25,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:25,937 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-06-16 17:11:25,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:25,955 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-06-16 17:11:25,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:25,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:25,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:25,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:25,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:25,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342920034] [2021-06-16 17:11:25,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342920034] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:25,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:25,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-16 17:11:25,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540824384] [2021-06-16 17:11:25,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-16 17:11:25,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:25,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-16 17:11:25,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:11:25,988 INFO L87 Difference]: Start difference. First operand 3132 states and 6530 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:26,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:26,282 INFO L93 Difference]: Finished difference Result 4701 states and 10149 transitions. [2021-06-16 17:11:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 17:11:26,282 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:26,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:26,299 INFO L225 Difference]: With dead ends: 4701 [2021-06-16 17:11:26,300 INFO L226 Difference]: Without dead ends: 4701 [2021-06-16 17:11:26,300 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:11:26,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2021-06-16 17:11:26,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 3192. [2021-06-16 17:11:26,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 3191 states have (on average 2.0808523973675963) internal successors, (6640), 3191 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 6640 transitions. [2021-06-16 17:11:26,426 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 6640 transitions. Word has length 48 [2021-06-16 17:11:26,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:26,426 INFO L482 AbstractCegarLoop]: Abstraction has 3192 states and 6640 transitions. [2021-06-16 17:11:26,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 6640 transitions. [2021-06-16 17:11:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:26,434 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:26,435 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:26,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-16 17:11:26,435 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:26,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:26,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1945397006, now seen corresponding path program 6 times [2021-06-16 17:11:26,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:26,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726579695] [2021-06-16 17:11:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:26,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:26,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:26,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:26,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:26,544 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-06-16 17:11:26,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:26,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:26,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:26,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:26,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:26,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:26,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:26,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:26,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:26,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:26,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:26,618 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-06-16 17:11:26,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:26,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:26,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:26,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:26,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:26,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:26,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726579695] [2021-06-16 17:11:26,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726579695] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:26,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:26,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-16 17:11:26,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067459802] [2021-06-16 17:11:26,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-16 17:11:26,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:26,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-16 17:11:26,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:11:26,643 INFO L87 Difference]: Start difference. First operand 3192 states and 6640 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:27,039 INFO L93 Difference]: Finished difference Result 4951 states and 10687 transitions. [2021-06-16 17:11:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:11:27,040 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:27,055 INFO L225 Difference]: With dead ends: 4951 [2021-06-16 17:11:27,055 INFO L226 Difference]: Without dead ends: 4739 [2021-06-16 17:11:27,055 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-16 17:11:27,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2021-06-16 17:11:27,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 3066. [2021-06-16 17:11:27,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3065 states have (on average 2.0796084828711257) internal successors, (6374), 3065 states have internal predecessors, (6374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 6374 transitions. [2021-06-16 17:11:27,187 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 6374 transitions. Word has length 48 [2021-06-16 17:11:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:27,187 INFO L482 AbstractCegarLoop]: Abstraction has 3066 states and 6374 transitions. [2021-06-16 17:11:27,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 6374 transitions. [2021-06-16 17:11:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:27,194 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:27,194 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:27,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-16 17:11:27,194 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:27,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:27,195 INFO L82 PathProgramCache]: Analyzing trace with hash -41563568, now seen corresponding path program 7 times [2021-06-16 17:11:27,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:27,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888000564] [2021-06-16 17:11:27,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:27,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-16 17:11:27,262 INFO L142 QuantifierPusher]: treesize reduction 23, result has 46.5 percent of original size [2021-06-16 17:11:27,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-16 17:11:27,267 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-06-16 17:11:27,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:27,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:27,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:27,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:27,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:27,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:27,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:27,310 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-06-16 17:11:27,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:27,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:27,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:27,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:27,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888000564] [2021-06-16 17:11:27,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888000564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:27,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:27,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:27,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932230832] [2021-06-16 17:11:27,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:27,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:27,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:27,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:27,337 INFO L87 Difference]: Start difference. First operand 3066 states and 6374 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:27,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:27,676 INFO L93 Difference]: Finished difference Result 5330 states and 11611 transitions. [2021-06-16 17:11:27,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 17:11:27,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:27,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:27,691 INFO L225 Difference]: With dead ends: 5330 [2021-06-16 17:11:27,691 INFO L226 Difference]: Without dead ends: 5118 [2021-06-16 17:11:27,692 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 101.0ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:11:27,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2021-06-16 17:11:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 3580. [2021-06-16 17:11:27,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 2.116792400111763) internal successors, (7576), 3579 states have internal predecessors, (7576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:27,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 7576 transitions. [2021-06-16 17:11:27,805 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 7576 transitions. Word has length 48 [2021-06-16 17:11:27,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:27,805 INFO L482 AbstractCegarLoop]: Abstraction has 3580 states and 7576 transitions. [2021-06-16 17:11:27,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 7576 transitions. [2021-06-16 17:11:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:27,834 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:27,835 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:27,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-16 17:11:27,835 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:27,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:27,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1615953520, now seen corresponding path program 8 times [2021-06-16 17:11:27,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:27,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736888024] [2021-06-16 17:11:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:27,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:27,934 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-06-16 17:11:27,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-16 17:11:27,939 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-06-16 17:11:27,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:27,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:27,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:27,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:27,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:27,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:27,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:27,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:28,007 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-06-16 17:11:28,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:28,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:28,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:28,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:28,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:28,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:28,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736888024] [2021-06-16 17:11:28,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736888024] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:28,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:28,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:11:28,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886663240] [2021-06-16 17:11:28,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:11:28,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:28,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:11:28,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:28,031 INFO L87 Difference]: Start difference. First operand 3580 states and 7576 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:28,431 INFO L93 Difference]: Finished difference Result 4875 states and 10594 transitions. [2021-06-16 17:11:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 17:11:28,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:28,442 INFO L225 Difference]: With dead ends: 4875 [2021-06-16 17:11:28,442 INFO L226 Difference]: Without dead ends: 4737 [2021-06-16 17:11:28,443 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 168.0ms TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-16 17:11:28,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4737 states. [2021-06-16 17:11:28,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4737 to 3576. [2021-06-16 17:11:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3576 states, 3575 states have (on average 2.118041958041958) internal successors, (7572), 3575 states have internal predecessors, (7572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 7572 transitions. [2021-06-16 17:11:28,557 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 7572 transitions. Word has length 48 [2021-06-16 17:11:28,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:28,558 INFO L482 AbstractCegarLoop]: Abstraction has 3576 states and 7572 transitions. [2021-06-16 17:11:28,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 7572 transitions. [2021-06-16 17:11:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:28,565 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:28,565 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:28,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-16 17:11:28,566 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:28,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1325475216, now seen corresponding path program 9 times [2021-06-16 17:11:28,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:28,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228226516] [2021-06-16 17:11:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:28,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:28,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:28,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:28,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:28,614 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-06-16 17:11:28,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:28,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:28,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:28,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:28,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:28,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:28,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:28,660 INFO L142 QuantifierPusher]: treesize reduction 21, result has 32.3 percent of original size [2021-06-16 17:11:28,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:28,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:28,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:28,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:28,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:28,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:28,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:28,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:28,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228226516] [2021-06-16 17:11:28,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228226516] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:28,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:28,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:11:28,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943338860] [2021-06-16 17:11:28,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:11:28,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:28,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:11:28,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:28,692 INFO L87 Difference]: Start difference. First operand 3576 states and 7572 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:29,069 INFO L93 Difference]: Finished difference Result 4748 states and 10227 transitions. [2021-06-16 17:11:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-16 17:11:29,069 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:29,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:29,079 INFO L225 Difference]: With dead ends: 4748 [2021-06-16 17:11:29,079 INFO L226 Difference]: Without dead ends: 4601 [2021-06-16 17:11:29,079 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 161.3ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-06-16 17:11:29,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2021-06-16 17:11:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 3704. [2021-06-16 17:11:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 2.1474480151228734) internal successors, (7952), 3703 states have internal predecessors, (7952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:29,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 7952 transitions. [2021-06-16 17:11:29,184 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 7952 transitions. Word has length 48 [2021-06-16 17:11:29,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:29,184 INFO L482 AbstractCegarLoop]: Abstraction has 3704 states and 7952 transitions. [2021-06-16 17:11:29,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 7952 transitions. [2021-06-16 17:11:29,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:29,191 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:29,191 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:29,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-16 17:11:29,191 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:29,192 INFO L82 PathProgramCache]: Analyzing trace with hash -82613328, now seen corresponding path program 10 times [2021-06-16 17:11:29,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:29,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016083382] [2021-06-16 17:11:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:29,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:29,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:29,236 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-06-16 17:11:29,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:29,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:29,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:29,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:29,279 INFO L142 QuantifierPusher]: treesize reduction 21, result has 32.3 percent of original size [2021-06-16 17:11:29,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:29,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:29,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:29,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:29,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:29,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016083382] [2021-06-16 17:11:29,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016083382] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:29,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:29,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:11:29,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824921075] [2021-06-16 17:11:29,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:11:29,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:29,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:11:29,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:29,314 INFO L87 Difference]: Start difference. First operand 3704 states and 7952 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:29,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:29,658 INFO L93 Difference]: Finished difference Result 5177 states and 11027 transitions. [2021-06-16 17:11:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 17:11:29,659 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:29,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:29,669 INFO L225 Difference]: With dead ends: 5177 [2021-06-16 17:11:29,669 INFO L226 Difference]: Without dead ends: 5177 [2021-06-16 17:11:29,669 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 120.9ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-06-16 17:11:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5177 states. [2021-06-16 17:11:29,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5177 to 4403. [2021-06-16 17:11:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4403 states, 4402 states have (on average 2.125397546569741) internal successors, (9356), 4402 states have internal predecessors, (9356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 9356 transitions. [2021-06-16 17:11:29,778 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 9356 transitions. Word has length 48 [2021-06-16 17:11:29,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:29,778 INFO L482 AbstractCegarLoop]: Abstraction has 4403 states and 9356 transitions. [2021-06-16 17:11:29,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:29,778 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 9356 transitions. [2021-06-16 17:11:29,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:29,787 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:29,787 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:29,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-16 17:11:29,787 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:29,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:29,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1675789392, now seen corresponding path program 11 times [2021-06-16 17:11:29,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:29,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601520574] [2021-06-16 17:11:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:29,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:29,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:29,836 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-06-16 17:11:29,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:29,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:29,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:29,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:29,880 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-06-16 17:11:29,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:29,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:29,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:29,911 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-06-16 17:11:29,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:29,925 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-06-16 17:11:29,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:29,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:29,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:29,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:29,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:29,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601520574] [2021-06-16 17:11:29,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601520574] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:29,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:29,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:11:29,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708663130] [2021-06-16 17:11:29,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:11:29,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:29,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:11:29,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:29,929 INFO L87 Difference]: Start difference. First operand 4403 states and 9356 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:30,305 INFO L93 Difference]: Finished difference Result 5132 states and 10934 transitions. [2021-06-16 17:11:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:11:30,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:30,315 INFO L225 Difference]: With dead ends: 5132 [2021-06-16 17:11:30,315 INFO L226 Difference]: Without dead ends: 4960 [2021-06-16 17:11:30,315 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 208.8ms TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-06-16 17:11:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4960 states. [2021-06-16 17:11:30,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4960 to 4379. [2021-06-16 17:11:30,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 2.1231155778894473) internal successors, (9295), 4378 states have internal predecessors, (9295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 9295 transitions. [2021-06-16 17:11:30,425 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 9295 transitions. Word has length 48 [2021-06-16 17:11:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:30,425 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 9295 transitions. [2021-06-16 17:11:30,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 9295 transitions. [2021-06-16 17:11:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:30,433 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:30,433 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:30,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-16 17:11:30,433 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:30,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:30,434 INFO L82 PathProgramCache]: Analyzing trace with hash -250781484, now seen corresponding path program 12 times [2021-06-16 17:11:30,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:30,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448926379] [2021-06-16 17:11:30,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:30,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:30,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:30,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:30,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:30,479 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-06-16 17:11:30,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:30,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:30,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:30,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:30,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:30,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:30,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:30,530 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-06-16 17:11:30,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:30,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:30,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:30,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:30,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:30,560 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-06-16 17:11:30,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:30,574 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-06-16 17:11:30,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:30,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:30,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:30,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:30,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448926379] [2021-06-16 17:11:30,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448926379] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:30,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:30,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:11:30,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854755822] [2021-06-16 17:11:30,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:11:30,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:30,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:11:30,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:30,578 INFO L87 Difference]: Start difference. First operand 4379 states and 9295 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:30,835 INFO L93 Difference]: Finished difference Result 5333 states and 11376 transitions. [2021-06-16 17:11:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:11:30,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:30,846 INFO L225 Difference]: With dead ends: 5333 [2021-06-16 17:11:30,846 INFO L226 Difference]: Without dead ends: 5022 [2021-06-16 17:11:30,846 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-16 17:11:30,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5022 states. [2021-06-16 17:11:30,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5022 to 4323. [2021-06-16 17:11:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4322 states have (on average 2.1152244331328087) internal successors, (9142), 4322 states have internal predecessors, (9142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:30,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 9142 transitions. [2021-06-16 17:11:30,951 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 9142 transitions. Word has length 48 [2021-06-16 17:11:30,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:30,952 INFO L482 AbstractCegarLoop]: Abstraction has 4323 states and 9142 transitions. [2021-06-16 17:11:30,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 9142 transitions. [2021-06-16 17:11:30,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:30,959 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:30,959 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:30,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-16 17:11:30,959 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:30,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:30,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1287588240, now seen corresponding path program 13 times [2021-06-16 17:11:30,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:30,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540641373] [2021-06-16 17:11:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:30,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:30,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:30,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:30,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:30,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:30,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:30,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:31,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:31,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:31,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:31,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:31,043 INFO L142 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-06-16 17:11:31,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-16 17:11:31,054 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-06-16 17:11:31,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:31,065 INFO L142 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-06-16 17:11:31,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:31,079 INFO L142 QuantifierPusher]: treesize reduction 23, result has 28.1 percent of original size [2021-06-16 17:11:31,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:31,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:31,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:31,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:31,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540641373] [2021-06-16 17:11:31,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540641373] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:31,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:31,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:11:31,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913485561] [2021-06-16 17:11:31,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:11:31,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:31,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:11:31,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:31,093 INFO L87 Difference]: Start difference. First operand 4323 states and 9142 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:31,448 INFO L93 Difference]: Finished difference Result 5661 states and 11944 transitions. [2021-06-16 17:11:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-16 17:11:31,448 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:31,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:31,458 INFO L225 Difference]: With dead ends: 5661 [2021-06-16 17:11:31,458 INFO L226 Difference]: Without dead ends: 5645 [2021-06-16 17:11:31,459 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 152.4ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:11:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2021-06-16 17:11:31,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 4383. [2021-06-16 17:11:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4383 states, 4382 states have (on average 2.1175262437243267) internal successors, (9279), 4382 states have internal predecessors, (9279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 9279 transitions. [2021-06-16 17:11:31,567 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 9279 transitions. Word has length 48 [2021-06-16 17:11:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:31,567 INFO L482 AbstractCegarLoop]: Abstraction has 4383 states and 9279 transitions. [2021-06-16 17:11:31,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 9279 transitions. [2021-06-16 17:11:31,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:31,575 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:31,575 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:31,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-16 17:11:31,575 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:31,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:31,576 INFO L82 PathProgramCache]: Analyzing trace with hash 901839826, now seen corresponding path program 14 times [2021-06-16 17:11:31,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:31,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847246175] [2021-06-16 17:11:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:31,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:31,629 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-06-16 17:11:31,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-16 17:11:31,633 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-06-16 17:11:31,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:31,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:31,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:31,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:31,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:31,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:31,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:31,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:31,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:31,716 INFO L142 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size [2021-06-16 17:11:31,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:31,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:31,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:31,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:31,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847246175] [2021-06-16 17:11:31,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847246175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:31,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:31,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-16 17:11:31,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970635268] [2021-06-16 17:11:31,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-16 17:11:31,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:31,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-16 17:11:31,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:11:31,733 INFO L87 Difference]: Start difference. First operand 4383 states and 9279 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:32,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:32,067 INFO L93 Difference]: Finished difference Result 5436 states and 11494 transitions. [2021-06-16 17:11:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:11:32,068 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:32,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:32,078 INFO L225 Difference]: With dead ends: 5436 [2021-06-16 17:11:32,078 INFO L226 Difference]: Without dead ends: 5360 [2021-06-16 17:11:32,079 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-06-16 17:11:32,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2021-06-16 17:11:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 4327. [2021-06-16 17:11:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4327 states, 4326 states have (on average 2.115117891816921) internal successors, (9150), 4326 states have internal predecessors, (9150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4327 states to 4327 states and 9150 transitions. [2021-06-16 17:11:32,210 INFO L78 Accepts]: Start accepts. Automaton has 4327 states and 9150 transitions. Word has length 48 [2021-06-16 17:11:32,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:32,210 INFO L482 AbstractCegarLoop]: Abstraction has 4327 states and 9150 transitions. [2021-06-16 17:11:32,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:32,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4327 states and 9150 transitions. [2021-06-16 17:11:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:32,221 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:32,221 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:32,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-16 17:11:32,222 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:32,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:32,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1826515500, now seen corresponding path program 15 times [2021-06-16 17:11:32,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:32,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292687994] [2021-06-16 17:11:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:32,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:32,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:11:32,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:32,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-16 17:11:32,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:32,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:32,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:32,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-16 17:11:32,307 INFO L142 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-06-16 17:11:32,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:32,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:32,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-16 17:11:32,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:32,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 17:11:32,362 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-06-16 17:11:32,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:32,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:32,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:32,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:32,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292687994] [2021-06-16 17:11:32,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292687994] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:32,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:32,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:32,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177229385] [2021-06-16 17:11:32,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:32,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:32,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:32,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:32,378 INFO L87 Difference]: Start difference. First operand 4327 states and 9150 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:32,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:32,561 INFO L93 Difference]: Finished difference Result 6244 states and 13519 transitions. [2021-06-16 17:11:32,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 17:11:32,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:32,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:32,569 INFO L225 Difference]: With dead ends: 6244 [2021-06-16 17:11:32,569 INFO L226 Difference]: Without dead ends: 6218 [2021-06-16 17:11:32,569 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:11:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2021-06-16 17:11:32,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 4874. [2021-06-16 17:11:32,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4873 states have (on average 2.147342499486969) internal successors, (10464), 4873 states have internal predecessors, (10464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 10464 transitions. [2021-06-16 17:11:32,685 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 10464 transitions. Word has length 48 [2021-06-16 17:11:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:32,685 INFO L482 AbstractCegarLoop]: Abstraction has 4874 states and 10464 transitions. [2021-06-16 17:11:32,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:32,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 10464 transitions. [2021-06-16 17:11:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:32,693 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:32,693 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:32,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-16 17:11:32,694 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:32,694 INFO L82 PathProgramCache]: Analyzing trace with hash 2082703382, now seen corresponding path program 16 times [2021-06-16 17:11:32,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:32,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619181712] [2021-06-16 17:11:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:32,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:32,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:11:32,748 INFO L142 QuantifierPusher]: treesize reduction 11, result has 50.0 percent of original size [2021-06-16 17:11:32,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-16 17:11:32,760 INFO L142 QuantifierPusher]: treesize reduction 11, result has 56.0 percent of original size [2021-06-16 17:11:32,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:32,776 INFO L142 QuantifierPusher]: treesize reduction 11, result has 50.0 percent of original size [2021-06-16 17:11:32,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-16 17:11:32,777 INFO L142 QuantifierPusher]: treesize reduction 18, result has 51.4 percent of original size [2021-06-16 17:11:32,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:32,781 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-16 17:11:32,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:32,794 INFO L142 QuantifierPusher]: treesize reduction 3, result has 78.6 percent of original size [2021-06-16 17:11:32,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-16 17:11:32,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:32,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:32,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:32,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:32,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:32,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619181712] [2021-06-16 17:11:32,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619181712] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:32,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:32,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:32,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963175391] [2021-06-16 17:11:32,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:32,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:32,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:32,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:32,827 INFO L87 Difference]: Start difference. First operand 4874 states and 10464 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:33,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:33,013 INFO L93 Difference]: Finished difference Result 6960 states and 15208 transitions. [2021-06-16 17:11:33,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 17:11:33,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:33,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:33,022 INFO L225 Difference]: With dead ends: 6960 [2021-06-16 17:11:33,022 INFO L226 Difference]: Without dead ends: 6338 [2021-06-16 17:11:33,022 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:11:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2021-06-16 17:11:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 5077. [2021-06-16 17:11:33,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5077 states, 5076 states have (on average 2.173758865248227) internal successors, (11034), 5076 states have internal predecessors, (11034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:33,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5077 states to 5077 states and 11034 transitions. [2021-06-16 17:11:33,135 INFO L78 Accepts]: Start accepts. Automaton has 5077 states and 11034 transitions. Word has length 48 [2021-06-16 17:11:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:33,135 INFO L482 AbstractCegarLoop]: Abstraction has 5077 states and 11034 transitions. [2021-06-16 17:11:33,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5077 states and 11034 transitions. [2021-06-16 17:11:33,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:33,143 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:33,143 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:33,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-16 17:11:33,143 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:33,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:33,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2081921678, now seen corresponding path program 17 times [2021-06-16 17:11:33,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:33,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249328912] [2021-06-16 17:11:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:33,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:33,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:33,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:33,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:33,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249328912] [2021-06-16 17:11:33,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249328912] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:33,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:33,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 17:11:33,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786759916] [2021-06-16 17:11:33,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 17:11:33,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:33,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 17:11:33,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 17:11:33,158 INFO L87 Difference]: Start difference. First operand 5077 states and 11034 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:33,174 INFO L93 Difference]: Finished difference Result 4580 states and 9493 transitions. [2021-06-16 17:11:33,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 17:11:33,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:33,179 INFO L225 Difference]: With dead ends: 4580 [2021-06-16 17:11:33,179 INFO L226 Difference]: Without dead ends: 4513 [2021-06-16 17:11:33,180 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 17:11:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2021-06-16 17:11:33,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 4499. [2021-06-16 17:11:33,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 4498 states have (on average 2.0787016451756335) internal successors, (9350), 4498 states have internal predecessors, (9350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:33,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 9350 transitions. [2021-06-16 17:11:33,295 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 9350 transitions. Word has length 48 [2021-06-16 17:11:33,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:33,295 INFO L482 AbstractCegarLoop]: Abstraction has 4499 states and 9350 transitions. [2021-06-16 17:11:33,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:33,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 9350 transitions. [2021-06-16 17:11:33,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:33,302 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:33,302 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:33,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-16 17:11:33,302 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:33,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:33,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1450919792, now seen corresponding path program 18 times [2021-06-16 17:11:33,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:33,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372488819] [2021-06-16 17:11:33,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:33,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:33,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:33,353 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-06-16 17:11:33,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:33,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:33,386 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-06-16 17:11:33,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:33,396 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-06-16 17:11:33,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:33,407 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-06-16 17:11:33,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:33,408 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-06-16 17:11:33,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:33,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:33,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:33,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:33,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372488819] [2021-06-16 17:11:33,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372488819] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:33,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:33,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:11:33,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739429641] [2021-06-16 17:11:33,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:11:33,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:33,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:11:33,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:33,434 INFO L87 Difference]: Start difference. First operand 4499 states and 9350 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:33,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:33,664 INFO L93 Difference]: Finished difference Result 4951 states and 10252 transitions. [2021-06-16 17:11:33,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 17:11:33,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:33,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:33,671 INFO L225 Difference]: With dead ends: 4951 [2021-06-16 17:11:33,671 INFO L226 Difference]: Without dead ends: 4951 [2021-06-16 17:11:33,672 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:11:33,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2021-06-16 17:11:33,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 4559. [2021-06-16 17:11:33,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4559 states, 4558 states have (on average 2.0745941202281704) internal successors, (9456), 4558 states have internal predecessors, (9456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4559 states to 4559 states and 9456 transitions. [2021-06-16 17:11:33,770 INFO L78 Accepts]: Start accepts. Automaton has 4559 states and 9456 transitions. Word has length 48 [2021-06-16 17:11:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:33,770 INFO L482 AbstractCegarLoop]: Abstraction has 4559 states and 9456 transitions. [2021-06-16 17:11:33,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4559 states and 9456 transitions. [2021-06-16 17:11:33,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:33,776 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:33,776 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:33,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-16 17:11:33,776 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:33,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:33,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1063848080, now seen corresponding path program 19 times [2021-06-16 17:11:33,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:33,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092399272] [2021-06-16 17:11:33,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:33,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:33,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:33,834 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-06-16 17:11:33,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:33,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:33,865 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-06-16 17:11:33,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:33,874 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-06-16 17:11:33,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:33,883 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-06-16 17:11:33,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:33,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:33,894 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-06-16 17:11:33,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:33,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:33,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:33,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:33,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:33,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092399272] [2021-06-16 17:11:33,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092399272] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:33,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:33,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-16 17:11:33,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254927934] [2021-06-16 17:11:33,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-16 17:11:33,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:33,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-16 17:11:33,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:11:33,921 INFO L87 Difference]: Start difference. First operand 4559 states and 9456 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:34,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:34,302 INFO L93 Difference]: Finished difference Result 5021 states and 10399 transitions. [2021-06-16 17:11:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 17:11:34,303 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:34,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:34,309 INFO L225 Difference]: With dead ends: 5021 [2021-06-16 17:11:34,309 INFO L226 Difference]: Without dead ends: 4823 [2021-06-16 17:11:34,309 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 166.8ms TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:11:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4823 states. [2021-06-16 17:11:34,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4823 to 4539. [2021-06-16 17:11:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4539 states, 4538 states have (on average 2.0727192595857207) internal successors, (9406), 4538 states have internal predecessors, (9406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:34,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4539 states to 4539 states and 9406 transitions. [2021-06-16 17:11:34,428 INFO L78 Accepts]: Start accepts. Automaton has 4539 states and 9406 transitions. Word has length 48 [2021-06-16 17:11:34,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:34,428 INFO L482 AbstractCegarLoop]: Abstraction has 4539 states and 9406 transitions. [2021-06-16 17:11:34,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:34,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4539 states and 9406 transitions. [2021-06-16 17:11:34,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:34,434 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:34,434 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:34,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-16 17:11:34,435 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:34,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:34,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1660748690, now seen corresponding path program 20 times [2021-06-16 17:11:34,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:34,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781754895] [2021-06-16 17:11:34,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:34,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:34,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:34,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:34,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:34,474 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-06-16 17:11:34,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:34,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:34,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:34,505 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-06-16 17:11:34,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:34,515 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-06-16 17:11:34,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:34,528 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-06-16 17:11:34,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:34,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:34,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:34,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:34,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:34,548 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-06-16 17:11:34,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:34,561 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-06-16 17:11:34,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:34,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:34,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:34,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:34,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:34,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781754895] [2021-06-16 17:11:34,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781754895] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:34,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:34,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:11:34,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985256373] [2021-06-16 17:11:34,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:11:34,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:34,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:11:34,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:34,563 INFO L87 Difference]: Start difference. First operand 4539 states and 9406 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:34,860 INFO L93 Difference]: Finished difference Result 4785 states and 9897 transitions. [2021-06-16 17:11:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:11:34,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:34,866 INFO L225 Difference]: With dead ends: 4785 [2021-06-16 17:11:34,866 INFO L226 Difference]: Without dead ends: 4603 [2021-06-16 17:11:34,866 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 167.1ms TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-16 17:11:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4603 states. [2021-06-16 17:11:34,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4603 to 4431. [2021-06-16 17:11:34,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4431 states, 4430 states have (on average 2.07313769751693) internal successors, (9184), 4430 states have internal predecessors, (9184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:34,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4431 states to 4431 states and 9184 transitions. [2021-06-16 17:11:34,951 INFO L78 Accepts]: Start accepts. Automaton has 4431 states and 9184 transitions. Word has length 48 [2021-06-16 17:11:34,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:34,952 INFO L482 AbstractCegarLoop]: Abstraction has 4431 states and 9184 transitions. [2021-06-16 17:11:34,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:34,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4431 states and 9184 transitions. [2021-06-16 17:11:34,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:34,958 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:34,958 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:34,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-16 17:11:34,958 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:34,959 INFO L82 PathProgramCache]: Analyzing trace with hash 343096334, now seen corresponding path program 21 times [2021-06-16 17:11:34,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:34,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331369524] [2021-06-16 17:11:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:34,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:34,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:34,992 INFO L142 QuantifierPusher]: treesize reduction 6, result has 77.8 percent of original size [2021-06-16 17:11:34,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 17:11:34,995 INFO L142 QuantifierPusher]: treesize reduction 19, result has 26.9 percent of original size [2021-06-16 17:11:34,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:35,001 INFO L142 QuantifierPusher]: treesize reduction 7, result has 73.1 percent of original size [2021-06-16 17:11:35,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:35,022 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-06-16 17:11:35,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:35,026 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-06-16 17:11:35,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:35,030 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-06-16 17:11:35,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:35,042 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-06-16 17:11:35,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:35,054 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-06-16 17:11:35,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:35,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:35,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:35,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:35,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331369524] [2021-06-16 17:11:35,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331369524] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:35,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:35,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:35,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072019638] [2021-06-16 17:11:35,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:35,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:35,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:35,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:35,072 INFO L87 Difference]: Start difference. First operand 4431 states and 9184 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:35,317 INFO L93 Difference]: Finished difference Result 6293 states and 13189 transitions. [2021-06-16 17:11:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-16 17:11:35,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:35,323 INFO L225 Difference]: With dead ends: 6293 [2021-06-16 17:11:35,323 INFO L226 Difference]: Without dead ends: 6072 [2021-06-16 17:11:35,323 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 135.3ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-06-16 17:11:35,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6072 states. [2021-06-16 17:11:35,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6072 to 4206. [2021-06-16 17:11:35,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4206 states, 4205 states have (on average 2.052794292508918) internal successors, (8632), 4205 states have internal predecessors, (8632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4206 states to 4206 states and 8632 transitions. [2021-06-16 17:11:35,420 INFO L78 Accepts]: Start accepts. Automaton has 4206 states and 8632 transitions. Word has length 48 [2021-06-16 17:11:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:35,420 INFO L482 AbstractCegarLoop]: Abstraction has 4206 states and 8632 transitions. [2021-06-16 17:11:35,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:35,420 INFO L276 IsEmpty]: Start isEmpty. Operand 4206 states and 8632 transitions. [2021-06-16 17:11:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:35,424 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:35,424 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:35,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-16 17:11:35,424 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:35,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:35,425 INFO L82 PathProgramCache]: Analyzing trace with hash -42652080, now seen corresponding path program 22 times [2021-06-16 17:11:35,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:35,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843205862] [2021-06-16 17:11:35,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:35,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:35,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:35,460 INFO L142 QuantifierPusher]: treesize reduction 6, result has 77.8 percent of original size [2021-06-16 17:11:35,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 17:11:35,466 INFO L142 QuantifierPusher]: treesize reduction 19, result has 26.9 percent of original size [2021-06-16 17:11:35,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:35,472 INFO L142 QuantifierPusher]: treesize reduction 7, result has 73.1 percent of original size [2021-06-16 17:11:35,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:35,488 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-06-16 17:11:35,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:35,492 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-06-16 17:11:35,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:35,498 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-06-16 17:11:35,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:35,512 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-06-16 17:11:35,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:35,526 INFO L142 QuantifierPusher]: treesize reduction 2, result has 90.5 percent of original size [2021-06-16 17:11:35,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:35,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:35,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:35,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:35,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843205862] [2021-06-16 17:11:35,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843205862] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:35,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:35,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:35,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077885015] [2021-06-16 17:11:35,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:35,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:35,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:35,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:35,548 INFO L87 Difference]: Start difference. First operand 4206 states and 8632 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:35,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:35,817 INFO L93 Difference]: Finished difference Result 5567 states and 11497 transitions. [2021-06-16 17:11:35,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-16 17:11:35,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:35,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:35,823 INFO L225 Difference]: With dead ends: 5567 [2021-06-16 17:11:35,823 INFO L226 Difference]: Without dead ends: 5408 [2021-06-16 17:11:35,824 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 156.8ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-16 17:11:35,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2021-06-16 17:11:35,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 3321. [2021-06-16 17:11:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3320 states have (on average 1.991867469879518) internal successors, (6613), 3320 states have internal predecessors, (6613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 6613 transitions. [2021-06-16 17:11:35,884 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 6613 transitions. Word has length 48 [2021-06-16 17:11:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:35,884 INFO L482 AbstractCegarLoop]: Abstraction has 3321 states and 6613 transitions. [2021-06-16 17:11:35,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 6613 transitions. [2021-06-16 17:11:35,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:35,888 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:35,888 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:35,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-16 17:11:35,889 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:35,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:35,889 INFO L82 PathProgramCache]: Analyzing trace with hash -742647104, now seen corresponding path program 23 times [2021-06-16 17:11:35,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:35,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57090112] [2021-06-16 17:11:35,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:35,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:35,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:35,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:35,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:35,930 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-06-16 17:11:35,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:35,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:35,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:35,962 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-06-16 17:11:35,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:35,971 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-06-16 17:11:35,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:35,980 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-06-16 17:11:35,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:35,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:35,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:35,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:35,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:35,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:35,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:35,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:35,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57090112] [2021-06-16 17:11:35,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57090112] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:35,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:35,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:11:35,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055843871] [2021-06-16 17:11:36,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:11:36,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:36,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:11:36,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:36,000 INFO L87 Difference]: Start difference. First operand 3321 states and 6613 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:36,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:36,311 INFO L93 Difference]: Finished difference Result 3630 states and 7207 transitions. [2021-06-16 17:11:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-16 17:11:36,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:36,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:36,316 INFO L225 Difference]: With dead ends: 3630 [2021-06-16 17:11:36,316 INFO L226 Difference]: Without dead ends: 3447 [2021-06-16 17:11:36,316 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 141.1ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-16 17:11:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-06-16 17:11:36,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 3212. [2021-06-16 17:11:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 3211 states have (on average 2.0021800062285893) internal successors, (6429), 3211 states have internal predecessors, (6429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:36,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 6429 transitions. [2021-06-16 17:11:36,380 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 6429 transitions. Word has length 48 [2021-06-16 17:11:36,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:36,380 INFO L482 AbstractCegarLoop]: Abstraction has 3212 states and 6429 transitions. [2021-06-16 17:11:36,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:36,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 6429 transitions. [2021-06-16 17:11:36,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:36,385 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:36,385 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:36,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-16 17:11:36,385 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:36,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:36,386 INFO L82 PathProgramCache]: Analyzing trace with hash -826201448, now seen corresponding path program 24 times [2021-06-16 17:11:36,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:36,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726263655] [2021-06-16 17:11:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:36,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:36,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:36,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:36,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:36,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726263655] [2021-06-16 17:11:36,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726263655] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:36,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:36,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 17:11:36,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052290164] [2021-06-16 17:11:36,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 17:11:36,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:36,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 17:11:36,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 17:11:36,398 INFO L87 Difference]: Start difference. First operand 3212 states and 6429 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:36,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:36,411 INFO L93 Difference]: Finished difference Result 3161 states and 6146 transitions. [2021-06-16 17:11:36,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 17:11:36,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:36,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:36,415 INFO L225 Difference]: With dead ends: 3161 [2021-06-16 17:11:36,415 INFO L226 Difference]: Without dead ends: 3062 [2021-06-16 17:11:36,416 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 17:11:36,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2021-06-16 17:11:36,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3051. [2021-06-16 17:11:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 3050 states have (on average 1.9747540983606557) internal successors, (6023), 3050 states have internal predecessors, (6023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:36,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 6023 transitions. [2021-06-16 17:11:36,489 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 6023 transitions. Word has length 48 [2021-06-16 17:11:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:36,489 INFO L482 AbstractCegarLoop]: Abstraction has 3051 states and 6023 transitions. [2021-06-16 17:11:36,489 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 6023 transitions. [2021-06-16 17:11:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:36,493 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:36,493 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:36,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-16 17:11:36,494 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:36,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:36,494 INFO L82 PathProgramCache]: Analyzing trace with hash -242493034, now seen corresponding path program 25 times [2021-06-16 17:11:36,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:36,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848891034] [2021-06-16 17:11:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:36,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:36,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:36,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:36,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:36,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:36,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:36,557 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-16 17:11:36,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:36,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:36,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:36,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848891034] [2021-06-16 17:11:36,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848891034] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:36,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:36,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:36,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071774335] [2021-06-16 17:11:36,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:36,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:36,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:36,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:36,571 INFO L87 Difference]: Start difference. First operand 3051 states and 6023 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:36,738 INFO L93 Difference]: Finished difference Result 3195 states and 6248 transitions. [2021-06-16 17:11:36,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 17:11:36,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:36,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:36,742 INFO L225 Difference]: With dead ends: 3195 [2021-06-16 17:11:36,742 INFO L226 Difference]: Without dead ends: 3146 [2021-06-16 17:11:36,743 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 144.9ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:11:36,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2021-06-16 17:11:36,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 3034. [2021-06-16 17:11:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3033 states have (on average 1.9732937685459941) internal successors, (5985), 3033 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 5985 transitions. [2021-06-16 17:11:36,814 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 5985 transitions. Word has length 48 [2021-06-16 17:11:36,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:36,815 INFO L482 AbstractCegarLoop]: Abstraction has 3034 states and 5985 transitions. [2021-06-16 17:11:36,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:36,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 5985 transitions. [2021-06-16 17:11:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:36,819 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:36,819 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:36,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-16 17:11:36,819 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:36,819 INFO L82 PathProgramCache]: Analyzing trace with hash -868827274, now seen corresponding path program 26 times [2021-06-16 17:11:36,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:36,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173047451] [2021-06-16 17:11:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:36,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:36,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:36,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:36,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:36,903 INFO L142 QuantifierPusher]: treesize reduction 20, result has 25.9 percent of original size [2021-06-16 17:11:36,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:36,912 INFO L142 QuantifierPusher]: treesize reduction 22, result has 40.5 percent of original size [2021-06-16 17:11:36,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:36,925 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-06-16 17:11:36,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:36,935 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 17:11:36,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:36,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:36,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:36,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:36,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173047451] [2021-06-16 17:11:36,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173047451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:36,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:36,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:36,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343066143] [2021-06-16 17:11:36,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:36,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:36,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:36,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:36,948 INFO L87 Difference]: Start difference. First operand 3034 states and 5985 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:37,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:37,271 INFO L93 Difference]: Finished difference Result 4399 states and 8637 transitions. [2021-06-16 17:11:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-16 17:11:37,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:37,277 INFO L225 Difference]: With dead ends: 4399 [2021-06-16 17:11:37,277 INFO L226 Difference]: Without dead ends: 4221 [2021-06-16 17:11:37,277 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 179.3ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:11:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-06-16 17:11:37,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 3386. [2021-06-16 17:11:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.9680945347119645) internal successors, (6662), 3385 states have internal predecessors, (6662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:37,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 6662 transitions. [2021-06-16 17:11:37,348 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 6662 transitions. Word has length 48 [2021-06-16 17:11:37,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:37,348 INFO L482 AbstractCegarLoop]: Abstraction has 3386 states and 6662 transitions. [2021-06-16 17:11:37,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:37,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 6662 transitions. [2021-06-16 17:11:37,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:37,353 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:37,353 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:37,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-16 17:11:37,354 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:37,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:37,354 INFO L82 PathProgramCache]: Analyzing trace with hash 581637492, now seen corresponding path program 27 times [2021-06-16 17:11:37,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:37,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622434498] [2021-06-16 17:11:37,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:37,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:37,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:37,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:37,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:37,404 INFO L142 QuantifierPusher]: treesize reduction 20, result has 25.9 percent of original size [2021-06-16 17:11:37,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:37,418 INFO L142 QuantifierPusher]: treesize reduction 22, result has 40.5 percent of original size [2021-06-16 17:11:37,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:37,433 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-06-16 17:11:37,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:37,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:37,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:37,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:37,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622434498] [2021-06-16 17:11:37,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622434498] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:37,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:37,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:37,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523452978] [2021-06-16 17:11:37,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:37,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:37,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:37,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:37,453 INFO L87 Difference]: Start difference. First operand 3386 states and 6662 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:37,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:37,725 INFO L93 Difference]: Finished difference Result 4002 states and 7865 transitions. [2021-06-16 17:11:37,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-16 17:11:37,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:37,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:37,729 INFO L225 Difference]: With dead ends: 4002 [2021-06-16 17:11:37,729 INFO L226 Difference]: Without dead ends: 4002 [2021-06-16 17:11:37,729 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 160.6ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:11:37,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2021-06-16 17:11:37,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 3087. [2021-06-16 17:11:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 3086 states have (on average 1.9760207388204796) internal successors, (6098), 3086 states have internal predecessors, (6098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:37,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 6098 transitions. [2021-06-16 17:11:37,777 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 6098 transitions. Word has length 48 [2021-06-16 17:11:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:37,777 INFO L482 AbstractCegarLoop]: Abstraction has 3087 states and 6098 transitions. [2021-06-16 17:11:37,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 6098 transitions. [2021-06-16 17:11:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:37,781 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:37,781 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:37,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-16 17:11:37,782 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:37,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:37,782 INFO L82 PathProgramCache]: Analyzing trace with hash -133645842, now seen corresponding path program 28 times [2021-06-16 17:11:37,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:37,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880155239] [2021-06-16 17:11:37,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:37,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:37,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:37,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:37,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:37,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:37,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:37,836 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-16 17:11:37,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:37,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:37,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:37,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:37,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880155239] [2021-06-16 17:11:37,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880155239] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:37,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:37,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:37,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036144554] [2021-06-16 17:11:37,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:37,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:37,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:37,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:37,848 INFO L87 Difference]: Start difference. First operand 3087 states and 6098 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:38,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:38,020 INFO L93 Difference]: Finished difference Result 3288 states and 6438 transitions. [2021-06-16 17:11:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 17:11:38,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:38,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:38,024 INFO L225 Difference]: With dead ends: 3288 [2021-06-16 17:11:38,024 INFO L226 Difference]: Without dead ends: 3070 [2021-06-16 17:11:38,025 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 142.4ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:11:38,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2021-06-16 17:11:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 2961. [2021-06-16 17:11:38,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2961 states, 2960 states have (on average 1.9908783783783783) internal successors, (5893), 2960 states have internal predecessors, (5893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 5893 transitions. [2021-06-16 17:11:38,077 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 5893 transitions. Word has length 48 [2021-06-16 17:11:38,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:38,078 INFO L482 AbstractCegarLoop]: Abstraction has 2961 states and 5893 transitions. [2021-06-16 17:11:38,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:38,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 5893 transitions. [2021-06-16 17:11:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:38,081 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:38,082 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:38,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-16 17:11:38,082 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:38,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1472577592, now seen corresponding path program 29 times [2021-06-16 17:11:38,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:38,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287487652] [2021-06-16 17:11:38,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:38,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:38,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:38,126 INFO L142 QuantifierPusher]: treesize reduction 25, result has 28.6 percent of original size [2021-06-16 17:11:38,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:38,127 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-06-16 17:11:38,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:38,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:38,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:38,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:38,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:38,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:38,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:38,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287487652] [2021-06-16 17:11:38,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287487652] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:38,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:38,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:38,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242065315] [2021-06-16 17:11:38,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:38,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:38,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:38,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:38,171 INFO L87 Difference]: Start difference. First operand 2961 states and 5893 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:38,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:38,352 INFO L93 Difference]: Finished difference Result 4990 states and 10093 transitions. [2021-06-16 17:11:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 17:11:38,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:38,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:38,358 INFO L225 Difference]: With dead ends: 4990 [2021-06-16 17:11:38,359 INFO L226 Difference]: Without dead ends: 4895 [2021-06-16 17:11:38,359 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:38,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4895 states. [2021-06-16 17:11:38,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4895 to 3592. [2021-06-16 17:11:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3591 states have (on average 2.034530771372877) internal successors, (7306), 3591 states have internal predecessors, (7306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 7306 transitions. [2021-06-16 17:11:38,429 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 7306 transitions. Word has length 48 [2021-06-16 17:11:38,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:38,429 INFO L482 AbstractCegarLoop]: Abstraction has 3592 states and 7306 transitions. [2021-06-16 17:11:38,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:38,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 7306 transitions. [2021-06-16 17:11:38,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:38,433 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:38,433 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:38,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-16 17:11:38,434 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:38,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:38,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1274046262, now seen corresponding path program 30 times [2021-06-16 17:11:38,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:38,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071623362] [2021-06-16 17:11:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:38,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:38,466 INFO L142 QuantifierPusher]: treesize reduction 18, result has 57.1 percent of original size [2021-06-16 17:11:38,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-16 17:11:38,485 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-16 17:11:38,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:38,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:38,498 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-06-16 17:11:38,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:38,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:38,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:38,535 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-06-16 17:11:38,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:38,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:38,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:38,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071623362] [2021-06-16 17:11:38,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071623362] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:38,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:38,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:38,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803532976] [2021-06-16 17:11:38,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:38,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:38,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:38,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:38,549 INFO L87 Difference]: Start difference. First operand 3592 states and 7306 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:38,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:38,748 INFO L93 Difference]: Finished difference Result 4273 states and 8682 transitions. [2021-06-16 17:11:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 17:11:38,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:38,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:38,752 INFO L225 Difference]: With dead ends: 4273 [2021-06-16 17:11:38,752 INFO L226 Difference]: Without dead ends: 4137 [2021-06-16 17:11:38,753 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-16 17:11:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2021-06-16 17:11:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 3501. [2021-06-16 17:11:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3500 states have (on average 2.0362857142857145) internal successors, (7127), 3500 states have internal predecessors, (7127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 7127 transitions. [2021-06-16 17:11:38,807 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 7127 transitions. Word has length 48 [2021-06-16 17:11:38,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:38,808 INFO L482 AbstractCegarLoop]: Abstraction has 3501 states and 7127 transitions. [2021-06-16 17:11:38,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:38,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 7127 transitions. [2021-06-16 17:11:38,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:38,811 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:38,811 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:38,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-16 17:11:38,811 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:38,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:38,811 INFO L82 PathProgramCache]: Analyzing trace with hash -991833412, now seen corresponding path program 31 times [2021-06-16 17:11:38,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:38,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133061173] [2021-06-16 17:11:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:38,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:38,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:38,837 INFO L142 QuantifierPusher]: treesize reduction 25, result has 28.6 percent of original size [2021-06-16 17:11:38,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:38,838 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-06-16 17:11:38,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:38,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:38,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:38,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:38,870 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-06-16 17:11:38,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:38,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:38,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:38,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:38,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133061173] [2021-06-16 17:11:38,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133061173] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:38,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:38,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:38,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902430534] [2021-06-16 17:11:38,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:38,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:38,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:38,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:38,880 INFO L87 Difference]: Start difference. First operand 3501 states and 7127 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:39,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:39,047 INFO L93 Difference]: Finished difference Result 4431 states and 9022 transitions. [2021-06-16 17:11:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 17:11:39,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:39,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:39,051 INFO L225 Difference]: With dead ends: 4431 [2021-06-16 17:11:39,051 INFO L226 Difference]: Without dead ends: 4351 [2021-06-16 17:11:39,052 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 78.3ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:11:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2021-06-16 17:11:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3492. [2021-06-16 17:11:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3491 states have (on average 2.0286450873675164) internal successors, (7082), 3491 states have internal predecessors, (7082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 7082 transitions. [2021-06-16 17:11:39,099 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 7082 transitions. Word has length 48 [2021-06-16 17:11:39,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:39,099 INFO L482 AbstractCegarLoop]: Abstraction has 3492 states and 7082 transitions. [2021-06-16 17:11:39,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:39,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 7082 transitions. [2021-06-16 17:11:39,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:39,103 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:39,103 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:39,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-16 17:11:39,103 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:39,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:39,104 INFO L82 PathProgramCache]: Analyzing trace with hash -793302082, now seen corresponding path program 32 times [2021-06-16 17:11:39,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:39,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56687561] [2021-06-16 17:11:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:39,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:39,136 INFO L142 QuantifierPusher]: treesize reduction 18, result has 57.1 percent of original size [2021-06-16 17:11:39,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-16 17:11:39,155 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-16 17:11:39,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:39,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:39,165 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-06-16 17:11:39,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:39,183 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-06-16 17:11:39,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:39,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:39,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:39,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:39,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:39,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56687561] [2021-06-16 17:11:39,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56687561] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:39,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:39,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:39,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728159823] [2021-06-16 17:11:39,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:39,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:39,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:39,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:39,220 INFO L87 Difference]: Start difference. First operand 3492 states and 7082 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:39,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:39,408 INFO L93 Difference]: Finished difference Result 4065 states and 8213 transitions. [2021-06-16 17:11:39,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 17:11:39,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:39,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:39,412 INFO L225 Difference]: With dead ends: 4065 [2021-06-16 17:11:39,412 INFO L226 Difference]: Without dead ends: 3892 [2021-06-16 17:11:39,413 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 140.6ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-16 17:11:39,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2021-06-16 17:11:39,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3056. [2021-06-16 17:11:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3056 states, 3055 states have (on average 2.0147299509001635) internal successors, (6155), 3055 states have internal predecessors, (6155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 6155 transitions. [2021-06-16 17:11:39,451 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 6155 transitions. Word has length 48 [2021-06-16 17:11:39,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:39,451 INFO L482 AbstractCegarLoop]: Abstraction has 3056 states and 6155 transitions. [2021-06-16 17:11:39,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:39,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 6155 transitions. [2021-06-16 17:11:39,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:39,454 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:39,454 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:39,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-16 17:11:39,454 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:39,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:39,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1730854974, now seen corresponding path program 33 times [2021-06-16 17:11:39,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:39,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405572657] [2021-06-16 17:11:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:39,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:39,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-16 17:11:39,501 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 17:11:39,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:39,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:39,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:39,526 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-06-16 17:11:39,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:39,533 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-06-16 17:11:39,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:39,541 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-06-16 17:11:39,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:39,549 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-06-16 17:11:39,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:39,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:39,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:39,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405572657] [2021-06-16 17:11:39,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405572657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:39,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:39,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:39,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930983068] [2021-06-16 17:11:39,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:39,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:39,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:39,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:39,551 INFO L87 Difference]: Start difference. First operand 3056 states and 6155 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:39,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:39,733 INFO L93 Difference]: Finished difference Result 3499 states and 6924 transitions. [2021-06-16 17:11:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 17:11:39,733 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 [2021-06-16 17:11:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:39,737 INFO L225 Difference]: With dead ends: 3499 [2021-06-16 17:11:39,737 INFO L226 Difference]: Without dead ends: 3168 [2021-06-16 17:11:39,737 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:39,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2021-06-16 17:11:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 3068. [2021-06-16 17:11:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3067 states have (on average 2.004890772742093) internal successors, (6149), 3067 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 6149 transitions. [2021-06-16 17:11:39,776 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 6149 transitions. Word has length 48 [2021-06-16 17:11:39,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:39,776 INFO L482 AbstractCegarLoop]: Abstraction has 3068 states and 6149 transitions. [2021-06-16 17:11:39,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:39,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 6149 transitions. [2021-06-16 17:11:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:39,779 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:39,779 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:39,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-16 17:11:39,779 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:39,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1096387804, now seen corresponding path program 34 times [2021-06-16 17:11:39,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:39,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371726199] [2021-06-16 17:11:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:39,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:39,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-16 17:11:39,827 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-16 17:11:39,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:39,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:39,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:39,850 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-06-16 17:11:39,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:39,856 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-06-16 17:11:39,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:39,867 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-06-16 17:11:39,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:39,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:39,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:39,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:39,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:39,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371726199] [2021-06-16 17:11:39,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371726199] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:39,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:39,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:39,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315682844] [2021-06-16 17:11:39,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:39,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:39,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:39,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:39,875 INFO L87 Difference]: Start difference. First operand 3068 states and 6149 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:39,985 INFO L93 Difference]: Finished difference Result 3529 states and 7047 transitions. [2021-06-16 17:11:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 17:11:39,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:39,988 INFO L225 Difference]: With dead ends: 3529 [2021-06-16 17:11:39,988 INFO L226 Difference]: Without dead ends: 3043 [2021-06-16 17:11:39,988 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 68.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2021-06-16 17:11:40,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 2850. [2021-06-16 17:11:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2849 states have (on average 2.0143910143910144) internal successors, (5739), 2849 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:40,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 5739 transitions. [2021-06-16 17:11:40,023 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 5739 transitions. Word has length 48 [2021-06-16 17:11:40,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:40,023 INFO L482 AbstractCegarLoop]: Abstraction has 2850 states and 5739 transitions. [2021-06-16 17:11:40,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:40,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 5739 transitions. [2021-06-16 17:11:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:40,025 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:40,025 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:40,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-16 17:11:40,026 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:40,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1416514060, now seen corresponding path program 35 times [2021-06-16 17:11:40,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:40,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25228184] [2021-06-16 17:11:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:40,063 INFO L142 QuantifierPusher]: treesize reduction 16, result has 44.8 percent of original size [2021-06-16 17:11:40,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:40,074 INFO L142 QuantifierPusher]: treesize reduction 12, result has 52.0 percent of original size [2021-06-16 17:11:40,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:40,075 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.3 percent of original size [2021-06-16 17:11:40,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-06-16 17:11:40,106 INFO L142 QuantifierPusher]: treesize reduction 24, result has 58.6 percent of original size [2021-06-16 17:11:40,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-06-16 17:11:40,124 INFO L142 QuantifierPusher]: treesize reduction 71, result has 34.9 percent of original size [2021-06-16 17:11:40,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-06-16 17:11:40,131 INFO L142 QuantifierPusher]: treesize reduction 52, result has 31.6 percent of original size [2021-06-16 17:11:40,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-16 17:11:40,146 INFO L142 QuantifierPusher]: treesize reduction 67, result has 22.1 percent of original size [2021-06-16 17:11:40,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:40,163 INFO L142 QuantifierPusher]: treesize reduction 82, result has 21.2 percent of original size [2021-06-16 17:11:40,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-16 17:11:40,185 INFO L142 QuantifierPusher]: treesize reduction 62, result has 1.6 percent of original size [2021-06-16 17:11:40,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:40,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:40,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:40,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:40,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25228184] [2021-06-16 17:11:40,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25228184] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:40,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:40,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:40,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249015213] [2021-06-16 17:11:40,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:40,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:40,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:40,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:40,189 INFO L87 Difference]: Start difference. First operand 2850 states and 5739 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:40,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:40,343 INFO L93 Difference]: Finished difference Result 4053 states and 8160 transitions. [2021-06-16 17:11:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 17:11:40,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:40,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:40,346 INFO L225 Difference]: With dead ends: 4053 [2021-06-16 17:11:40,346 INFO L226 Difference]: Without dead ends: 3965 [2021-06-16 17:11:40,346 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 129.1ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:40,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3965 states. [2021-06-16 17:11:40,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3965 to 3147. [2021-06-16 17:11:40,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3147 states, 3146 states have (on average 2.018753973299428) internal successors, (6351), 3146 states have internal predecessors, (6351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 6351 transitions. [2021-06-16 17:11:40,406 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 6351 transitions. Word has length 48 [2021-06-16 17:11:40,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:40,406 INFO L482 AbstractCegarLoop]: Abstraction has 3147 states and 6351 transitions. [2021-06-16 17:11:40,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:40,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 6351 transitions. [2021-06-16 17:11:40,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:40,409 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:40,409 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:40,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-16 17:11:40,410 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:40,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:40,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1427988470, now seen corresponding path program 36 times [2021-06-16 17:11:40,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:40,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950518425] [2021-06-16 17:11:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:40,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:40,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:40,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:40,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:40,445 INFO L142 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size [2021-06-16 17:11:40,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 17:11:40,464 INFO L142 QuantifierPusher]: treesize reduction 15, result has 58.3 percent of original size [2021-06-16 17:11:40,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 17:11:40,477 INFO L142 QuantifierPusher]: treesize reduction 35, result has 42.6 percent of original size [2021-06-16 17:11:40,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:40,483 INFO L142 QuantifierPusher]: treesize reduction 21, result has 46.2 percent of original size [2021-06-16 17:11:40,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-16 17:11:40,494 INFO L142 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size [2021-06-16 17:11:40,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:40,505 INFO L142 QuantifierPusher]: treesize reduction 2, result has 90.5 percent of original size [2021-06-16 17:11:40,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:40,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:40,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:40,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:40,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950518425] [2021-06-16 17:11:40,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950518425] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:40,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:40,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:40,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397174710] [2021-06-16 17:11:40,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:40,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:40,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:40,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:40,521 INFO L87 Difference]: Start difference. First operand 3147 states and 6351 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:40,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:40,731 INFO L93 Difference]: Finished difference Result 3766 states and 7371 transitions. [2021-06-16 17:11:40,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 17:11:40,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:40,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:40,735 INFO L225 Difference]: With dead ends: 3766 [2021-06-16 17:11:40,735 INFO L226 Difference]: Without dead ends: 3397 [2021-06-16 17:11:40,735 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 133.0ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:11:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2021-06-16 17:11:40,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 2762. [2021-06-16 17:11:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2762 states, 2761 states have (on average 1.99601593625498) internal successors, (5511), 2761 states have internal predecessors, (5511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 5511 transitions. [2021-06-16 17:11:40,771 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 5511 transitions. Word has length 48 [2021-06-16 17:11:40,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:40,772 INFO L482 AbstractCegarLoop]: Abstraction has 2762 states and 5511 transitions. [2021-06-16 17:11:40,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:40,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 5511 transitions. [2021-06-16 17:11:40,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:40,774 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:40,774 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:40,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-16 17:11:40,774 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:40,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:40,775 INFO L82 PathProgramCache]: Analyzing trace with hash 972114706, now seen corresponding path program 37 times [2021-06-16 17:11:40,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:40,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032768013] [2021-06-16 17:11:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:40,806 INFO L142 QuantifierPusher]: treesize reduction 31, result has 36.7 percent of original size [2021-06-16 17:11:40,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-16 17:11:40,817 INFO L142 QuantifierPusher]: treesize reduction 14, result has 56.3 percent of original size [2021-06-16 17:11:40,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-16 17:11:40,819 INFO L142 QuantifierPusher]: treesize reduction 10, result has 80.8 percent of original size [2021-06-16 17:11:40,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-06-16 17:11:40,849 INFO L142 QuantifierPusher]: treesize reduction 28, result has 54.8 percent of original size [2021-06-16 17:11:40,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-06-16 17:11:40,884 INFO L142 QuantifierPusher]: treesize reduction 16, result has 70.4 percent of original size [2021-06-16 17:11:40,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-06-16 17:11:40,923 INFO L142 QuantifierPusher]: treesize reduction 29, result has 47.3 percent of original size [2021-06-16 17:11:40,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-06-16 17:11:40,944 INFO L142 QuantifierPusher]: treesize reduction 22, result has 40.5 percent of original size [2021-06-16 17:11:40,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:40,960 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-06-16 17:11:40,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-16 17:11:40,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:40,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:40,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:40,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032768013] [2021-06-16 17:11:40,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032768013] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:40,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:40,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:40,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482653584] [2021-06-16 17:11:40,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:40,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:40,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:40,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:40,984 INFO L87 Difference]: Start difference. First operand 2762 states and 5511 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:41,483 INFO L93 Difference]: Finished difference Result 4420 states and 8773 transitions. [2021-06-16 17:11:41,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-16 17:11:41,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:41,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:41,488 INFO L225 Difference]: With dead ends: 4420 [2021-06-16 17:11:41,488 INFO L226 Difference]: Without dead ends: 4313 [2021-06-16 17:11:41,488 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 429.3ms TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-06-16 17:11:41,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2021-06-16 17:11:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 2775. [2021-06-16 17:11:41,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2774 states have (on average 1.9819754866618602) internal successors, (5498), 2774 states have internal predecessors, (5498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:41,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 5498 transitions. [2021-06-16 17:11:41,530 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 5498 transitions. Word has length 48 [2021-06-16 17:11:41,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:41,530 INFO L482 AbstractCegarLoop]: Abstraction has 2775 states and 5498 transitions. [2021-06-16 17:11:41,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:41,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 5498 transitions. [2021-06-16 17:11:41,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:41,532 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:41,533 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:41,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-16 17:11:41,533 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:41,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:41,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1872387824, now seen corresponding path program 38 times [2021-06-16 17:11:41,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:41,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677327990] [2021-06-16 17:11:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:41,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:41,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:41,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:41,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:41,567 INFO L142 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size [2021-06-16 17:11:41,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 17:11:41,586 INFO L142 QuantifierPusher]: treesize reduction 10, result has 67.7 percent of original size [2021-06-16 17:11:41,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 17:11:41,600 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.7 percent of original size [2021-06-16 17:11:41,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-16 17:11:41,618 INFO L142 QuantifierPusher]: treesize reduction 11, result has 68.6 percent of original size [2021-06-16 17:11:41,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-16 17:11:41,636 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-06-16 17:11:41,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 17:11:41,657 INFO L142 QuantifierPusher]: treesize reduction 21, result has 44.7 percent of original size [2021-06-16 17:11:41,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:41,673 INFO L142 QuantifierPusher]: treesize reduction 12, result has 58.6 percent of original size [2021-06-16 17:11:41,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:41,674 INFO L142 QuantifierPusher]: treesize reduction 21, result has 27.6 percent of original size [2021-06-16 17:11:41,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-16 17:11:41,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:41,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:41,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:41,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677327990] [2021-06-16 17:11:41,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677327990] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:41,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:41,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:11:41,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722736895] [2021-06-16 17:11:41,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:11:41,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:41,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:11:41,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:41,687 INFO L87 Difference]: Start difference. First operand 2775 states and 5498 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:41,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:41,951 INFO L93 Difference]: Finished difference Result 3566 states and 6952 transitions. [2021-06-16 17:11:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 17:11:41,952 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:41,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:41,956 INFO L225 Difference]: With dead ends: 3566 [2021-06-16 17:11:41,957 INFO L226 Difference]: Without dead ends: 3428 [2021-06-16 17:11:41,957 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 182.6ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-16 17:11:41,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2021-06-16 17:11:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 2787. [2021-06-16 17:11:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2786 states have (on average 1.9791816223977028) internal successors, (5514), 2786 states have internal predecessors, (5514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:41,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 5514 transitions. [2021-06-16 17:11:41,995 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 5514 transitions. Word has length 48 [2021-06-16 17:11:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:41,995 INFO L482 AbstractCegarLoop]: Abstraction has 2787 states and 5514 transitions. [2021-06-16 17:11:41,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 5514 transitions. [2021-06-16 17:11:41,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:41,997 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:41,997 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:41,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-16 17:11:41,997 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:41,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:41,998 INFO L82 PathProgramCache]: Analyzing trace with hash 522914180, now seen corresponding path program 39 times [2021-06-16 17:11:41,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:41,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368144817] [2021-06-16 17:11:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:42,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:42,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-16 17:11:42,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:42,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:42,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:42,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:42,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:42,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:42,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:42,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:42,084 INFO L142 QuantifierPusher]: treesize reduction 21, result has 46.2 percent of original size [2021-06-16 17:11:42,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-16 17:11:42,100 INFO L142 QuantifierPusher]: treesize reduction 25, result has 49.0 percent of original size [2021-06-16 17:11:42,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-16 17:11:42,125 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-16 17:11:42,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-16 17:11:42,163 INFO L142 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-06-16 17:11:42,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:42,177 INFO L142 QuantifierPusher]: treesize reduction 31, result has 20.5 percent of original size [2021-06-16 17:11:42,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-16 17:11:42,186 INFO L142 QuantifierPusher]: treesize reduction 16, result has 33.3 percent of original size [2021-06-16 17:11:42,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-16 17:11:42,191 INFO L142 QuantifierPusher]: treesize reduction 16, result has 33.3 percent of original size [2021-06-16 17:11:42,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-16 17:11:42,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:42,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:42,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:42,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368144817] [2021-06-16 17:11:42,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368144817] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:42,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:42,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-16 17:11:42,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022808917] [2021-06-16 17:11:42,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-16 17:11:42,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:42,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-16 17:11:42,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-16 17:11:42,203 INFO L87 Difference]: Start difference. First operand 2787 states and 5514 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:42,906 INFO L93 Difference]: Finished difference Result 3602 states and 6960 transitions. [2021-06-16 17:11:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-16 17:11:42,906 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:42,911 INFO L225 Difference]: With dead ends: 3602 [2021-06-16 17:11:42,911 INFO L226 Difference]: Without dead ends: 3525 [2021-06-16 17:11:42,912 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 456.9ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-06-16 17:11:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-06-16 17:11:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 2792. [2021-06-16 17:11:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2792 states, 2791 states have (on average 1.9795772124686493) internal successors, (5525), 2791 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 5525 transitions. [2021-06-16 17:11:42,954 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 5525 transitions. Word has length 48 [2021-06-16 17:11:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:42,954 INFO L482 AbstractCegarLoop]: Abstraction has 2792 states and 5525 transitions. [2021-06-16 17:11:42,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:42,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 5525 transitions. [2021-06-16 17:11:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:42,956 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:42,956 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:42,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-16 17:11:42,956 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:42,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:42,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1351952766, now seen corresponding path program 40 times [2021-06-16 17:11:42,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:42,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480946731] [2021-06-16 17:11:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:42,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:42,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-16 17:11:42,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:42,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:43,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:43,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:43,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:43,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:43,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:43,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:43,018 INFO L142 QuantifierPusher]: treesize reduction 21, result has 46.2 percent of original size [2021-06-16 17:11:43,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-16 17:11:43,034 INFO L142 QuantifierPusher]: treesize reduction 25, result has 49.0 percent of original size [2021-06-16 17:11:43,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-16 17:11:43,060 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-16 17:11:43,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-16 17:11:43,094 INFO L142 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-06-16 17:11:43,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:43,108 INFO L142 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-06-16 17:11:43,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:43,124 INFO L142 QuantifierPusher]: treesize reduction 31, result has 20.5 percent of original size [2021-06-16 17:11:43,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-16 17:11:43,134 INFO L142 QuantifierPusher]: treesize reduction 16, result has 33.3 percent of original size [2021-06-16 17:11:43,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-16 17:11:43,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:43,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:43,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:43,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480946731] [2021-06-16 17:11:43,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480946731] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:43,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:43,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-16 17:11:43,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171883043] [2021-06-16 17:11:43,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-16 17:11:43,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:43,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-16 17:11:43,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-16 17:11:43,137 INFO L87 Difference]: Start difference. First operand 2792 states and 5525 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:43,658 INFO L93 Difference]: Finished difference Result 3324 states and 6454 transitions. [2021-06-16 17:11:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-16 17:11:43,659 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:43,663 INFO L225 Difference]: With dead ends: 3324 [2021-06-16 17:11:43,663 INFO L226 Difference]: Without dead ends: 3267 [2021-06-16 17:11:43,663 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 359.2ms TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-06-16 17:11:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2021-06-16 17:11:43,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2773. [2021-06-16 17:11:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2773 states, 2772 states have (on average 1.980880230880231) internal successors, (5491), 2772 states have internal predecessors, (5491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2773 states to 2773 states and 5491 transitions. [2021-06-16 17:11:43,710 INFO L78 Accepts]: Start accepts. Automaton has 2773 states and 5491 transitions. Word has length 48 [2021-06-16 17:11:43,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:43,711 INFO L482 AbstractCegarLoop]: Abstraction has 2773 states and 5491 transitions. [2021-06-16 17:11:43,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2773 states and 5491 transitions. [2021-06-16 17:11:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:43,714 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:43,714 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:43,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-16 17:11:43,714 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:43,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:43,715 INFO L82 PathProgramCache]: Analyzing trace with hash -780526652, now seen corresponding path program 41 times [2021-06-16 17:11:43,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:43,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5102139] [2021-06-16 17:11:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:43,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:43,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-16 17:11:43,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:43,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:43,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:43,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:43,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:43,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:43,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:43,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:43,787 INFO L142 QuantifierPusher]: treesize reduction 21, result has 46.2 percent of original size [2021-06-16 17:11:43,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-16 17:11:43,803 INFO L142 QuantifierPusher]: treesize reduction 25, result has 49.0 percent of original size [2021-06-16 17:11:43,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-16 17:11:43,828 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-16 17:11:43,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-16 17:11:43,890 INFO L142 QuantifierPusher]: treesize reduction 45, result has 30.8 percent of original size [2021-06-16 17:11:43,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-16 17:11:43,918 INFO L142 QuantifierPusher]: treesize reduction 31, result has 20.5 percent of original size [2021-06-16 17:11:43,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-16 17:11:43,930 INFO L142 QuantifierPusher]: treesize reduction 16, result has 33.3 percent of original size [2021-06-16 17:11:43,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-16 17:11:43,932 INFO L142 QuantifierPusher]: treesize reduction 16, result has 33.3 percent of original size [2021-06-16 17:11:43,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-16 17:11:43,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:43,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:43,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:43,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5102139] [2021-06-16 17:11:43,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5102139] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:43,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:43,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-16 17:11:43,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83299638] [2021-06-16 17:11:43,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-16 17:11:43,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:43,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-16 17:11:43,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-16 17:11:43,946 INFO L87 Difference]: Start difference. First operand 2773 states and 5491 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:44,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:44,613 INFO L93 Difference]: Finished difference Result 3395 states and 6575 transitions. [2021-06-16 17:11:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-16 17:11:44,614 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:44,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:44,617 INFO L225 Difference]: With dead ends: 3395 [2021-06-16 17:11:44,617 INFO L226 Difference]: Without dead ends: 3291 [2021-06-16 17:11:44,618 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 527.6ms TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2021-06-16 17:11:44,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2021-06-16 17:11:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 2752. [2021-06-16 17:11:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2752 states, 2751 states have (on average 1.9814612868047983) internal successors, (5451), 2751 states have internal predecessors, (5451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 5451 transitions. [2021-06-16 17:11:44,650 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 5451 transitions. Word has length 48 [2021-06-16 17:11:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:44,650 INFO L482 AbstractCegarLoop]: Abstraction has 2752 states and 5451 transitions. [2021-06-16 17:11:44,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:44,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 5451 transitions. [2021-06-16 17:11:44,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:44,652 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:44,652 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:44,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-16 17:11:44,653 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:44,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:44,653 INFO L82 PathProgramCache]: Analyzing trace with hash 2085297638, now seen corresponding path program 42 times [2021-06-16 17:11:44,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:44,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569106996] [2021-06-16 17:11:44,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:44,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:44,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:44,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:44,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:44,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:44,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:44,684 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-06-16 17:11:44,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-16 17:11:44,701 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size [2021-06-16 17:11:44,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-16 17:11:44,720 INFO L142 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-06-16 17:11:44,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-16 17:11:44,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:44,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:44,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:44,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-16 17:11:44,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:44,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:44,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:44,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569106996] [2021-06-16 17:11:44,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569106996] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:44,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:44,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:44,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624326962] [2021-06-16 17:11:44,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:44,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:44,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:44,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:44,764 INFO L87 Difference]: Start difference. First operand 2752 states and 5451 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:45,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:45,095 INFO L93 Difference]: Finished difference Result 3920 states and 7744 transitions. [2021-06-16 17:11:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:11:45,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:45,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:45,101 INFO L225 Difference]: With dead ends: 3920 [2021-06-16 17:11:45,101 INFO L226 Difference]: Without dead ends: 3763 [2021-06-16 17:11:45,101 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 187.0ms TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-06-16 17:11:45,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2021-06-16 17:11:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 2535. [2021-06-16 17:11:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2535 states, 2534 states have (on average 1.9921073401736384) internal successors, (5048), 2534 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 5048 transitions. [2021-06-16 17:11:45,149 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 5048 transitions. Word has length 48 [2021-06-16 17:11:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:45,149 INFO L482 AbstractCegarLoop]: Abstraction has 2535 states and 5048 transitions. [2021-06-16 17:11:45,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 5048 transitions. [2021-06-16 17:11:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:45,153 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:45,153 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:45,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-16 17:11:45,153 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:45,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:45,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1443455738, now seen corresponding path program 43 times [2021-06-16 17:11:45,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:45,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900954871] [2021-06-16 17:11:45,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:45,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,208 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-16 17:11:45,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:45,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:45,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900954871] [2021-06-16 17:11:45,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900954871] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:45,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:45,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:45,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31035214] [2021-06-16 17:11:45,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:45,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:45,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:45,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:45,221 INFO L87 Difference]: Start difference. First operand 2535 states and 5048 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:45,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:45,357 INFO L93 Difference]: Finished difference Result 2713 states and 5361 transitions. [2021-06-16 17:11:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 17:11:45,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:45,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:45,360 INFO L225 Difference]: With dead ends: 2713 [2021-06-16 17:11:45,360 INFO L226 Difference]: Without dead ends: 2496 [2021-06-16 17:11:45,361 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:11:45,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-06-16 17:11:45,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2059. [2021-06-16 17:11:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 2058 states have (on average 1.8965014577259476) internal successors, (3903), 2058 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:45,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 3903 transitions. [2021-06-16 17:11:45,386 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 3903 transitions. Word has length 48 [2021-06-16 17:11:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:45,386 INFO L482 AbstractCegarLoop]: Abstraction has 2059 states and 3903 transitions. [2021-06-16 17:11:45,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:45,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 3903 transitions. [2021-06-16 17:11:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:45,389 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:45,389 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:45,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-16 17:11:45,389 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:45,389 INFO L82 PathProgramCache]: Analyzing trace with hash 206229742, now seen corresponding path program 44 times [2021-06-16 17:11:45,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:45,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423088519] [2021-06-16 17:11:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:45,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,443 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-16 17:11:45,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:45,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:45,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423088519] [2021-06-16 17:11:45,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423088519] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:45,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:45,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:45,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263004502] [2021-06-16 17:11:45,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:45,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:45,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:45,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:45,455 INFO L87 Difference]: Start difference. First operand 2059 states and 3903 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:45,585 INFO L93 Difference]: Finished difference Result 2373 states and 4489 transitions. [2021-06-16 17:11:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 17:11:45,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:45,587 INFO L225 Difference]: With dead ends: 2373 [2021-06-16 17:11:45,587 INFO L226 Difference]: Without dead ends: 1692 [2021-06-16 17:11:45,587 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:11:45,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2021-06-16 17:11:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1526. [2021-06-16 17:11:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 1.8714754098360655) internal successors, (2854), 1525 states have internal predecessors, (2854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2854 transitions. [2021-06-16 17:11:45,603 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2854 transitions. Word has length 48 [2021-06-16 17:11:45,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:45,603 INFO L482 AbstractCegarLoop]: Abstraction has 1526 states and 2854 transitions. [2021-06-16 17:11:45,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2854 transitions. [2021-06-16 17:11:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:45,605 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:45,605 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:45,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-16 17:11:45,605 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:45,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:45,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1195497382, now seen corresponding path program 45 times [2021-06-16 17:11:45,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:45,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986905520] [2021-06-16 17:11:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:45,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:45,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:45,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:45,632 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-06-16 17:11:45,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:45,639 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-06-16 17:11:45,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:45,646 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-16 17:11:45,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,652 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-06-16 17:11:45,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:45,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:45,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:45,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986905520] [2021-06-16 17:11:45,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986905520] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:45,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:45,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 17:11:45,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833712118] [2021-06-16 17:11:45,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 17:11:45,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:45,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 17:11:45,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:11:45,662 INFO L87 Difference]: Start difference. First operand 1526 states and 2854 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:45,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:45,770 INFO L93 Difference]: Finished difference Result 1518 states and 2811 transitions. [2021-06-16 17:11:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 17:11:45,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:45,772 INFO L225 Difference]: With dead ends: 1518 [2021-06-16 17:11:45,772 INFO L226 Difference]: Without dead ends: 1381 [2021-06-16 17:11:45,772 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:45,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2021-06-16 17:11:45,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1369. [2021-06-16 17:11:45,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1368 states have (on average 1.8596491228070176) internal successors, (2544), 1368 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2544 transitions. [2021-06-16 17:11:45,791 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2544 transitions. Word has length 48 [2021-06-16 17:11:45,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:45,791 INFO L482 AbstractCegarLoop]: Abstraction has 1369 states and 2544 transitions. [2021-06-16 17:11:45,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:45,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2544 transitions. [2021-06-16 17:11:45,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:45,793 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:45,793 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:45,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-16 17:11:45,793 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:45,794 INFO L82 PathProgramCache]: Analyzing trace with hash 446375886, now seen corresponding path program 46 times [2021-06-16 17:11:45,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:45,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32703386] [2021-06-16 17:11:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:45,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:45,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:45,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:45,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:45,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:45,837 INFO L142 QuantifierPusher]: treesize reduction 25, result has 32.4 percent of original size [2021-06-16 17:11:45,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:45,845 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-06-16 17:11:45,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:45,852 INFO L142 QuantifierPusher]: treesize reduction 7, result has 66.7 percent of original size [2021-06-16 17:11:45,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:45,861 INFO L142 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-06-16 17:11:45,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:45,870 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-06-16 17:11:45,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:45,879 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-06-16 17:11:45,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,887 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-06-16 17:11:45,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,897 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-06-16 17:11:45,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:45,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:45,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:45,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:45,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32703386] [2021-06-16 17:11:45,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32703386] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:45,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:45,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-16 17:11:45,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287077286] [2021-06-16 17:11:45,907 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-16 17:11:45,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:45,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-16 17:11:45,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-16 17:11:45,908 INFO L87 Difference]: Start difference. First operand 1369 states and 2544 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:46,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:46,040 INFO L93 Difference]: Finished difference Result 1377 states and 2554 transitions. [2021-06-16 17:11:46,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 17:11:46,040 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:46,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:46,041 INFO L225 Difference]: With dead ends: 1377 [2021-06-16 17:11:46,041 INFO L226 Difference]: Without dead ends: 1348 [2021-06-16 17:11:46,041 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 113.0ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-16 17:11:46,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-06-16 17:11:46,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1348. [2021-06-16 17:11:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 1.8678544914625093) internal successors, (2516), 1347 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2516 transitions. [2021-06-16 17:11:46,054 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2516 transitions. Word has length 48 [2021-06-16 17:11:46,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:46,054 INFO L482 AbstractCegarLoop]: Abstraction has 1348 states and 2516 transitions. [2021-06-16 17:11:46,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2516 transitions. [2021-06-16 17:11:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:46,056 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:46,056 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:46,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-16 17:11:46,056 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:46,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:46,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1094335830, now seen corresponding path program 47 times [2021-06-16 17:11:46,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:46,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390378859] [2021-06-16 17:11:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:46,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:46,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:46,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:11:46,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:11:46,089 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-06-16 17:11:46,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:46,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:46,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:46,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:46,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390378859] [2021-06-16 17:11:46,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390378859] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:46,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:46,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:46,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133409132] [2021-06-16 17:11:46,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:46,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:46,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:46,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:46,107 INFO L87 Difference]: Start difference. First operand 1348 states and 2516 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:46,293 INFO L93 Difference]: Finished difference Result 1525 states and 2801 transitions. [2021-06-16 17:11:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 17:11:46,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:46,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:46,294 INFO L225 Difference]: With dead ends: 1525 [2021-06-16 17:11:46,295 INFO L226 Difference]: Without dead ends: 1032 [2021-06-16 17:11:46,295 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-06-16 17:11:46,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2021-06-16 17:11:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 722. [2021-06-16 17:11:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 1.7628294036061027) internal successors, (1271), 721 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1271 transitions. [2021-06-16 17:11:46,303 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1271 transitions. Word has length 48 [2021-06-16 17:11:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:46,303 INFO L482 AbstractCegarLoop]: Abstraction has 722 states and 1271 transitions. [2021-06-16 17:11:46,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:46,303 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1271 transitions. [2021-06-16 17:11:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:46,303 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:46,304 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:46,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-16 17:11:46,304 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:46,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:46,304 INFO L82 PathProgramCache]: Analyzing trace with hash -600519736, now seen corresponding path program 48 times [2021-06-16 17:11:46,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:46,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762442981] [2021-06-16 17:11:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:46,329 INFO L142 QuantifierPusher]: treesize reduction 30, result has 48.3 percent of original size [2021-06-16 17:11:46,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-16 17:11:46,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-16 17:11:46,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:46,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-16 17:11:46,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-06-16 17:11:46,410 INFO L142 QuantifierPusher]: treesize reduction 15, result has 62.5 percent of original size [2021-06-16 17:11:46,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-06-16 17:11:46,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:46,430 INFO L142 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-06-16 17:11:46,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 17:11:46,445 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-06-16 17:11:46,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-16 17:11:46,472 INFO L142 QuantifierPusher]: treesize reduction 73, result has 50.0 percent of original size [2021-06-16 17:11:46,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-16 17:11:46,502 INFO L142 QuantifierPusher]: treesize reduction 104, result has 29.3 percent of original size [2021-06-16 17:11:46,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-16 17:11:46,549 INFO L142 QuantifierPusher]: treesize reduction 34, result has 22.7 percent of original size [2021-06-16 17:11:46,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:46,562 INFO L142 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-06-16 17:11:46,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:46,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:46,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:46,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762442981] [2021-06-16 17:11:46,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762442981] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:46,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:46,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-16 17:11:46,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895586045] [2021-06-16 17:11:46,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-16 17:11:46,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:46,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-16 17:11:46,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-06-16 17:11:46,565 INFO L87 Difference]: Start difference. First operand 722 states and 1271 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:46,780 INFO L93 Difference]: Finished difference Result 749 states and 1309 transitions. [2021-06-16 17:11:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:11:46,780 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:46,781 INFO L225 Difference]: With dead ends: 749 [2021-06-16 17:11:46,781 INFO L226 Difference]: Without dead ends: 711 [2021-06-16 17:11:46,781 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 280.2ms TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-06-16 17:11:46,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-06-16 17:11:46,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 710. [2021-06-16 17:11:46,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 1.767277856135402) internal successors, (1253), 709 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1253 transitions. [2021-06-16 17:11:46,788 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1253 transitions. Word has length 48 [2021-06-16 17:11:46,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:46,788 INFO L482 AbstractCegarLoop]: Abstraction has 710 states and 1253 transitions. [2021-06-16 17:11:46,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1253 transitions. [2021-06-16 17:11:46,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:46,789 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:46,789 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:46,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-16 17:11:46,789 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:46,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:46,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1805911384, now seen corresponding path program 49 times [2021-06-16 17:11:46,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:46,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158003330] [2021-06-16 17:11:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:46,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-16 17:11:46,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-16 17:11:46,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-16 17:11:46,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-16 17:11:46,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 17:11:46,838 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-06-16 17:11:46,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:46,845 INFO L142 QuantifierPusher]: treesize reduction 6, result has 73.9 percent of original size [2021-06-16 17:11:46,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:46,855 INFO L142 QuantifierPusher]: treesize reduction 24, result has 40.0 percent of original size [2021-06-16 17:11:46,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-16 17:11:46,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:46,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:46,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:46,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:46,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:46,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:46,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158003330] [2021-06-16 17:11:46,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158003330] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:46,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:46,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:46,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793643046] [2021-06-16 17:11:46,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:46,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:46,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:46,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:46,896 INFO L87 Difference]: Start difference. First operand 710 states and 1253 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:47,030 INFO L93 Difference]: Finished difference Result 870 states and 1499 transitions. [2021-06-16 17:11:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 17:11:47,031 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:47,032 INFO L225 Difference]: With dead ends: 870 [2021-06-16 17:11:47,032 INFO L226 Difference]: Without dead ends: 704 [2021-06-16 17:11:47,032 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 82.8ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-06-16 17:11:47,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2021-06-16 17:11:47,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.766714082503556) internal successors, (1242), 703 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1242 transitions. [2021-06-16 17:11:47,039 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1242 transitions. Word has length 48 [2021-06-16 17:11:47,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:47,039 INFO L482 AbstractCegarLoop]: Abstraction has 704 states and 1242 transitions. [2021-06-16 17:11:47,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:47,039 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1242 transitions. [2021-06-16 17:11:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:47,040 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:47,040 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:47,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-16 17:11:47,040 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:47,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1863054320, now seen corresponding path program 50 times [2021-06-16 17:11:47,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:47,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401906013] [2021-06-16 17:11:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:47,059 INFO L142 QuantifierPusher]: treesize reduction 19, result has 62.0 percent of original size [2021-06-16 17:11:47,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-16 17:11:47,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:47,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:47,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:47,088 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-06-16 17:11:47,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:47,089 INFO L142 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size [2021-06-16 17:11:47,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:47,098 INFO L142 QuantifierPusher]: treesize reduction 9, result has 52.6 percent of original size [2021-06-16 17:11:47,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:47,108 INFO L142 QuantifierPusher]: treesize reduction 9, result has 52.6 percent of original size [2021-06-16 17:11:47,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:47,117 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-06-16 17:11:47,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-16 17:11:47,127 INFO L142 QuantifierPusher]: treesize reduction 10, result has 9.1 percent of original size [2021-06-16 17:11:47,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:47,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:47,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:47,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401906013] [2021-06-16 17:11:47,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401906013] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:47,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:47,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:11:47,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909664382] [2021-06-16 17:11:47,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:11:47,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:47,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:11:47,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:11:47,130 INFO L87 Difference]: Start difference. First operand 704 states and 1242 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:47,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:47,255 INFO L93 Difference]: Finished difference Result 588 states and 1019 transitions. [2021-06-16 17:11:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 17:11:47,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:47,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:47,256 INFO L225 Difference]: With dead ends: 588 [2021-06-16 17:11:47,256 INFO L226 Difference]: Without dead ends: 546 [2021-06-16 17:11:47,256 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 73.9ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-06-16 17:11:47,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 517. [2021-06-16 17:11:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.7635658914728682) internal successors, (910), 516 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:47,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 910 transitions. [2021-06-16 17:11:47,263 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 910 transitions. Word has length 48 [2021-06-16 17:11:47,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:47,263 INFO L482 AbstractCegarLoop]: Abstraction has 517 states and 910 transitions. [2021-06-16 17:11:47,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 910 transitions. [2021-06-16 17:11:47,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:47,264 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:47,266 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:47,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-16 17:11:47,266 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:47,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:47,267 INFO L82 PathProgramCache]: Analyzing trace with hash 562711134, now seen corresponding path program 51 times [2021-06-16 17:11:47,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:47,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263450141] [2021-06-16 17:11:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:47,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-16 17:11:47,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:47,297 INFO L142 QuantifierPusher]: treesize reduction 29, result has 31.0 percent of original size [2021-06-16 17:11:47,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 17:11:47,298 INFO L142 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-06-16 17:11:47,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:47,307 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 17:11:47,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:47,308 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-06-16 17:11:47,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:47,314 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-16 17:11:47,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:47,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:47,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:47,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:47,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263450141] [2021-06-16 17:11:47,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263450141] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:47,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:47,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-16 17:11:47,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937752666] [2021-06-16 17:11:47,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 17:11:47,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:47,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 17:11:47,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:11:47,323 INFO L87 Difference]: Start difference. First operand 517 states and 910 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) [2021-06-16 17:11:47,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:47,378 INFO L93 Difference]: Finished difference Result 424 states and 754 transitions. [2021-06-16 17:11:47,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 17:11:47,379 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 [2021-06-16 17:11:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:47,379 INFO L225 Difference]: With dead ends: 424 [2021-06-16 17:11:47,379 INFO L226 Difference]: Without dead ends: 341 [2021-06-16 17:11:47,379 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:11:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-06-16 17:11:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 320. [2021-06-16 17:11:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.755485893416928) internal successors, (560), 319 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 560 transitions. [2021-06-16 17:11:47,384 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 560 transitions. Word has length 48 [2021-06-16 17:11:47,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:47,384 INFO L482 AbstractCegarLoop]: Abstraction has 320 states and 560 transitions. [2021-06-16 17:11:47,384 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) [2021-06-16 17:11:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 560 transitions. [2021-06-16 17:11:47,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 17:11:47,384 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:11:47,385 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:11:47,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-16 17:11:47,385 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 17:11:47,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:11:47,385 INFO L82 PathProgramCache]: Analyzing trace with hash 259930560, now seen corresponding path program 52 times [2021-06-16 17:11:47,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:11:47,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132753317] [2021-06-16 17:11:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:11:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:11:47,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:47,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:47,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-16 17:11:47,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-16 17:11:47,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:47,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:47,420 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-06-16 17:11:47,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:47,427 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-06-16 17:11:47,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 17:11:47,440 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-06-16 17:11:47,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:11:47,441 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-06-16 17:11:47,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 17:11:47,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:11:47,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:11:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:11:47,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:11:47,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132753317] [2021-06-16 17:11:47,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132753317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:11:47,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:11:47,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:11:47,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815658965] [2021-06-16 17:11:47,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:11:47,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:11:47,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:11:47,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:11:47,451 INFO L87 Difference]: Start difference. First operand 320 states and 560 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:11:47,527 INFO L93 Difference]: Finished difference Result 213 states and 338 transitions. [2021-06-16 17:11:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 17:11:47,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 17:11:47,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:11:47,528 INFO L225 Difference]: With dead ends: 213 [2021-06-16 17:11:47,528 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 17:11:47,528 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 67.1ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:11:47,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 17:11:47,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 17:11:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:47,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 17:11:47,528 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-06-16 17:11:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:11:47,529 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 17:11:47,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:11:47,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 17:11:47,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 17:11:47,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-16 17:11:47,531 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 17:11:47,532 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 05:11:47 BasicIcfg [2021-06-16 17:11:47,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 17:11:47,533 INFO L168 Benchmark]: Toolchain (without parser) took 25390.85 ms. Allocated memory was 179.3 MB in the beginning and 786.4 MB in the end (delta: 607.1 MB). Free memory was 157.9 MB in the beginning and 300.8 MB in the end (delta: -142.9 MB). Peak memory consumption was 464.8 MB. Max. memory is 8.0 GB. [2021-06-16 17:11:47,533 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.49 ms. Allocated memory is still 179.3 MB. Free memory is still 158.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 17:11:47,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.53 ms. Allocated memory is still 179.3 MB. Free memory was 157.7 MB in the beginning and 156.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 17:11:47,533 INFO L168 Benchmark]: Boogie Preprocessor took 30.88 ms. Allocated memory is still 179.3 MB. Free memory was 156.2 MB in the beginning and 155.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 17:11:47,533 INFO L168 Benchmark]: RCFGBuilder took 282.25 ms. Allocated memory is still 179.3 MB. Free memory was 155.1 MB in the beginning and 141.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-16 17:11:47,533 INFO L168 Benchmark]: TraceAbstraction took 25039.07 ms. Allocated memory was 179.3 MB in the beginning and 786.4 MB in the end (delta: 607.1 MB). Free memory was 140.7 MB in the beginning and 300.8 MB in the end (delta: -160.1 MB). Peak memory consumption was 448.0 MB. Max. memory is 8.0 GB. [2021-06-16 17:11:47,534 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 0.49 ms. Allocated memory is still 179.3 MB. Free memory is still 158.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 33.53 ms. Allocated memory is still 179.3 MB. Free memory was 157.7 MB in the beginning and 156.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.88 ms. Allocated memory is still 179.3 MB. Free memory was 156.2 MB in the beginning and 155.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 282.25 ms. Allocated memory is still 179.3 MB. Free memory was 155.1 MB in the beginning and 141.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25039.07 ms. Allocated memory was 179.3 MB in the beginning and 786.4 MB in the end (delta: 607.1 MB). Free memory was 140.7 MB in the beginning and 300.8 MB in the end (delta: -160.1 MB). Peak memory consumption was 448.0 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: 7247, positive: 6555, positive conditional: 6555, positive unconditional: 0, negative: 692, negative conditional: 692, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7246, positive: 6555, positive conditional: 0, positive unconditional: 6555, negative: 691, negative conditional: 0, negative unconditional: 691, 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: 226, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 183, negative conditional: 0, negative unconditional: 183, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7246, positive: 5885, positive conditional: 0, positive unconditional: 5885, negative: 621, negative conditional: 0, negative unconditional: 621, 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: 1 - 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: 24942.0ms, OverallIterations: 52, TraceHistogramMax: 1, EmptinessCheckTime: 287.7ms, AutomataDifference: 13484.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 688.8ms, PartialOrderReductionTime: 677.1ms, HoareTripleCheckerStatistics: 4836 SDtfs, 8310 SDslu, 18853 SDs, 0 SdLazy, 13017 SolverSat, 2040 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6599.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 730 GetRequests, 122 SyntacticMatches, 27 SemanticMatches, 581 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 7701.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5077occurred in iteration=16, InterpolantAutomatonStates: 598, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3676.1ms AutomataMinimizationTime, 52 MinimizatonAttempts, 34904 StatesRemovedByMinimization, 48 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 86.0ms SsaConstructionTime, 376.6ms SatisfiabilityAnalysisTime, 6009.6ms InterpolantComputationTime, 2496 NumberOfCodeBlocks, 2496 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2444 ConstructedInterpolants, 0 QuantifiedInterpolants, 15634 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 52 InterpolantComputations, 52 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...