/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/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 01:10:16,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 01:10:16,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 01:10:16,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 01:10:17,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-07-14 01:10:17,043 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 01:10:17,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 01:10:17,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 01:10:17,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 01:10:17,046 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 01:10:17,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 01:10:17,047 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 01:10:17,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 01:10:17,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 01:10:17,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 01:10:17,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 01:10:17,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 01:10:17,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 01:10:17,048 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 01:10:17,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 01:10:17,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 01:10:17,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 01:10:17,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 01:10:17,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 01:10:17,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 01:10:17,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 01:10:17,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 01:10:17,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 01:10:17,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 01:10:17,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 01:10:17,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 01:10:17,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 01:10:17,050 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 01:10:17,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 01:10:17,050 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-14 01:10:17,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 01:10:17,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 01:10:17,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 01:10:17,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 01:10:17,324 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 01:10:17,325 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 01:10:17,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-07-14 01:10:17,326 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-07-14 01:10:17,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 01:10:17,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 01:10:17,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 01:10:17,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 01:10:17,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 01:10:17,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:17" (1/1) ... [2021-07-14 01:10:17,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:17" (1/1) ... [2021-07-14 01:10:17,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 01:10:17,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 01:10:17,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 01:10:17,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 01:10:17,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:17" (1/1) ... [2021-07-14 01:10:17,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:17" (1/1) ... [2021-07-14 01:10:17,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:17" (1/1) ... [2021-07-14 01:10:17,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:17" (1/1) ... [2021-07-14 01:10:17,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:17" (1/1) ... [2021-07-14 01:10:17,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:17" (1/1) ... [2021-07-14 01:10:17,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:17" (1/1) ... [2021-07-14 01:10:17,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 01:10:17,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 01:10:17,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 01:10:17,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 01:10:17,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 01:10:17,450 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 01:10:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 01:10:17,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 01:10:17,450 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 01:10:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 01:10:17,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 01:10:17,451 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 01:10:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 01:10:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 01:10:17,451 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 01:10:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 01:10:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 01:10:17,451 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-14 01:10:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-14 01:10:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-14 01:10:17,451 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-07-14 01:10:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-07-14 01:10:17,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-07-14 01:10:17,452 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 01:10:17,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 01:10:17,634 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 01:10:17,635 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:10:17 BoogieIcfgContainer [2021-07-14 01:10:17,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 01:10:17,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 01:10:17,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 01:10:17,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 01:10:17,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:10:17" (1/2) ... [2021-07-14 01:10:17,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29daf7cd and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:10:17, skipping insertion in model container [2021-07-14 01:10:17,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:10:17" (2/2) ... [2021-07-14 01:10:17,653 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-07-14 01:10:17,657 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 01:10:17,657 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 01:10:17,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 01:10:17,658 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 01:10:17,747 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-07-14 01:10:17,764 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-07-14 01:10:17,802 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 01:10:17,803 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 01:10:17,803 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 01:10:17,803 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 01:10:17,803 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 01:10:17,803 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 01:10:17,803 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 01:10:17,803 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 01:10:18,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 12444 states, 9550 states have (on average 2.8894240837696334) internal successors, (27594), 12443 states have internal predecessors, (27594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:18,982 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:18,982 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:18,983 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:18,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:18,994 INFO L82 PathProgramCache]: Analyzing trace with hash -750672588, now seen corresponding path program 1 times [2021-07-14 01:10:19,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:19,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079220092] [2021-07-14 01:10:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:19,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:19,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:19,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:19,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:19,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:19,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:19,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:19,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:19,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:19,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079220092] [2021-07-14 01:10:19,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079220092] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:19,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:19,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 01:10:19,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939300509] [2021-07-14 01:10:19,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-14 01:10:19,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:19,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-14 01:10:19,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-14 01:10:19,244 INFO L87 Difference]: Start difference. First operand has 12444 states, 9550 states have (on average 2.8894240837696334) internal successors, (27594), 12443 states have internal predecessors, (27594), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:19,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:19,441 INFO L93 Difference]: Finished difference Result 12865 states and 28600 transitions. [2021-07-14 01:10:19,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 01:10:19,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:19,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:19,493 INFO L225 Difference]: With dead ends: 12865 [2021-07-14 01:10:19,493 INFO L226 Difference]: Without dead ends: 5519 [2021-07-14 01:10:19,494 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-14 01:10:19,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2021-07-14 01:10:19,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5447. [2021-07-14 01:10:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5447 states, 5446 states have (on average 3.0457216305545356) internal successors, (16587), 5446 states have internal predecessors, (16587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5447 states to 5447 states and 16587 transitions. [2021-07-14 01:10:19,880 INFO L78 Accepts]: Start accepts. Automaton has 5447 states and 16587 transitions. Word has length 39 [2021-07-14 01:10:19,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:19,893 INFO L482 AbstractCegarLoop]: Abstraction has 5447 states and 16587 transitions. [2021-07-14 01:10:19,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:19,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5447 states and 16587 transitions. [2021-07-14 01:10:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:19,908 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:19,908 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:19,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 01:10:19,925 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:19,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:19,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1532353228, now seen corresponding path program 2 times [2021-07-14 01:10:19,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:19,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506988617] [2021-07-14 01:10:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:19,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:19,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:19,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:19,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:19,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:19,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:19,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:19,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:19,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:19,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:19,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:19,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506988617] [2021-07-14 01:10:19,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506988617] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:19,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:19,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-14 01:10:19,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102786005] [2021-07-14 01:10:19,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 01:10:19,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:19,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 01:10:19,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-14 01:10:19,990 INFO L87 Difference]: Start difference. First operand 5447 states and 16587 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:20,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:20,261 INFO L93 Difference]: Finished difference Result 12960 states and 38635 transitions. [2021-07-14 01:10:20,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 01:10:20,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:20,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:20,377 INFO L225 Difference]: With dead ends: 12960 [2021-07-14 01:10:20,377 INFO L226 Difference]: Without dead ends: 12960 [2021-07-14 01:10:20,378 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:10:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12960 states. [2021-07-14 01:10:20,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12960 to 6330. [2021-07-14 01:10:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6330 states, 6329 states have (on average 3.034128614315058) internal successors, (19203), 6329 states have internal predecessors, (19203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 19203 transitions. [2021-07-14 01:10:20,601 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 19203 transitions. Word has length 39 [2021-07-14 01:10:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:20,602 INFO L482 AbstractCegarLoop]: Abstraction has 6330 states and 19203 transitions. [2021-07-14 01:10:20,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 19203 transitions. [2021-07-14 01:10:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:20,687 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:20,687 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:20,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 01:10:20,687 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:20,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:20,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1512667376, now seen corresponding path program 3 times [2021-07-14 01:10:20,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:20,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415000078] [2021-07-14 01:10:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:20,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:20,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:20,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:20,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:20,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:20,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:20,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:20,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:20,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:20,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:20,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:20,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:20,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:20,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:20,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:20,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:20,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:20,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:20,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:20,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:20,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:20,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415000078] [2021-07-14 01:10:20,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415000078] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:20,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:20,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:10:20,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876503598] [2021-07-14 01:10:20,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:10:20,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:20,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:10:20,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:20,806 INFO L87 Difference]: Start difference. First operand 6330 states and 19203 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:21,308 INFO L93 Difference]: Finished difference Result 15591 states and 44705 transitions. [2021-07-14 01:10:21,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 01:10:21,311 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:21,357 INFO L225 Difference]: With dead ends: 15591 [2021-07-14 01:10:21,357 INFO L226 Difference]: Without dead ends: 15591 [2021-07-14 01:10:21,357 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-07-14 01:10:21,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15591 states. [2021-07-14 01:10:21,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15591 to 8449. [2021-07-14 01:10:21,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8449 states, 8448 states have (on average 2.908499053030303) internal successors, (24571), 8448 states have internal predecessors, (24571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8449 states to 8449 states and 24571 transitions. [2021-07-14 01:10:21,684 INFO L78 Accepts]: Start accepts. Automaton has 8449 states and 24571 transitions. Word has length 39 [2021-07-14 01:10:21,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:21,684 INFO L482 AbstractCegarLoop]: Abstraction has 8449 states and 24571 transitions. [2021-07-14 01:10:21,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 8449 states and 24571 transitions. [2021-07-14 01:10:21,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:21,705 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:21,705 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:21,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 01:10:21,706 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:21,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:21,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1931892976, now seen corresponding path program 4 times [2021-07-14 01:10:21,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:21,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382707774] [2021-07-14 01:10:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:21,772 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-07-14 01:10:21,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-14 01:10:21,783 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-07-14 01:10:21,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 01:10:21,792 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-07-14 01:10:21,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 01:10:21,795 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-07-14 01:10:21,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 01:10:21,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:21,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-14 01:10:21,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:21,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:21,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:21,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-14 01:10:21,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:21,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:21,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:21,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382707774] [2021-07-14 01:10:21,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382707774] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:21,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:21,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-14 01:10:21,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582081185] [2021-07-14 01:10:21,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 01:10:21,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:21,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 01:10:21,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-14 01:10:21,815 INFO L87 Difference]: Start difference. First operand 8449 states and 24571 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:21,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:21,890 INFO L93 Difference]: Finished difference Result 12853 states and 37603 transitions. [2021-07-14 01:10:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 01:10:21,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:21,922 INFO L225 Difference]: With dead ends: 12853 [2021-07-14 01:10:21,922 INFO L226 Difference]: Without dead ends: 8621 [2021-07-14 01:10:21,923 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.2ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-14 01:10:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8621 states. [2021-07-14 01:10:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8621 to 8439. [2021-07-14 01:10:22,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8439 states, 8438 states have (on average 2.854467883384688) internal successors, (24086), 8438 states have internal predecessors, (24086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8439 states to 8439 states and 24086 transitions. [2021-07-14 01:10:22,164 INFO L78 Accepts]: Start accepts. Automaton has 8439 states and 24086 transitions. Word has length 39 [2021-07-14 01:10:22,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:22,165 INFO L482 AbstractCegarLoop]: Abstraction has 8439 states and 24086 transitions. [2021-07-14 01:10:22,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:22,165 INFO L276 IsEmpty]: Start isEmpty. Operand 8439 states and 24086 transitions. [2021-07-14 01:10:22,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:22,183 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:22,183 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:22,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-14 01:10:22,183 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:22,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:22,184 INFO L82 PathProgramCache]: Analyzing trace with hash -143098478, now seen corresponding path program 5 times [2021-07-14 01:10:22,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:22,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407835102] [2021-07-14 01:10:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:22,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:22,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:22,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:22,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407835102] [2021-07-14 01:10:22,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407835102] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:22,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:22,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:10:22,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781426907] [2021-07-14 01:10:22,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:10:22,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:22,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:10:22,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:10:22,261 INFO L87 Difference]: Start difference. First operand 8439 states and 24086 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:22,578 INFO L93 Difference]: Finished difference Result 16007 states and 42244 transitions. [2021-07-14 01:10:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 01:10:22,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:22,694 INFO L225 Difference]: With dead ends: 16007 [2021-07-14 01:10:22,695 INFO L226 Difference]: Without dead ends: 15146 [2021-07-14 01:10:22,695 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-07-14 01:10:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15146 states. [2021-07-14 01:10:22,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15146 to 7776. [2021-07-14 01:10:22,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7776 states, 7775 states have (on average 2.707395498392283) internal successors, (21050), 7775 states have internal predecessors, (21050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:22,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7776 states to 7776 states and 21050 transitions. [2021-07-14 01:10:22,923 INFO L78 Accepts]: Start accepts. Automaton has 7776 states and 21050 transitions. Word has length 39 [2021-07-14 01:10:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:22,923 INFO L482 AbstractCegarLoop]: Abstraction has 7776 states and 21050 transitions. [2021-07-14 01:10:22,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand 7776 states and 21050 transitions. [2021-07-14 01:10:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:22,938 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:22,938 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:22,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-14 01:10:22,938 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:22,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:22,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1344004272, now seen corresponding path program 6 times [2021-07-14 01:10:22,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:22,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408604292] [2021-07-14 01:10:22,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:22,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:22,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:22,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:22,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:23,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:23,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:23,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:23,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408604292] [2021-07-14 01:10:23,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408604292] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:23,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:23,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:10:23,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79129030] [2021-07-14 01:10:23,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:10:23,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:23,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:10:23,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:23,002 INFO L87 Difference]: Start difference. First operand 7776 states and 21050 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:23,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:23,463 INFO L93 Difference]: Finished difference Result 14270 states and 37365 transitions. [2021-07-14 01:10:23,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 01:10:23,463 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:23,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:23,492 INFO L225 Difference]: With dead ends: 14270 [2021-07-14 01:10:23,492 INFO L226 Difference]: Without dead ends: 13168 [2021-07-14 01:10:23,492 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-07-14 01:10:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13168 states. [2021-07-14 01:10:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13168 to 7494. [2021-07-14 01:10:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7494 states, 7493 states have (on average 2.707860669958628) internal successors, (20290), 7493 states have internal predecessors, (20290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 20290 transitions. [2021-07-14 01:10:23,695 INFO L78 Accepts]: Start accepts. Automaton has 7494 states and 20290 transitions. Word has length 39 [2021-07-14 01:10:23,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:23,695 INFO L482 AbstractCegarLoop]: Abstraction has 7494 states and 20290 transitions. [2021-07-14 01:10:23,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:23,695 INFO L276 IsEmpty]: Start isEmpty. Operand 7494 states and 20290 transitions. [2021-07-14 01:10:23,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:23,710 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:23,710 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:23,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-14 01:10:23,710 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:23,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:23,710 INFO L82 PathProgramCache]: Analyzing trace with hash 417546908, now seen corresponding path program 7 times [2021-07-14 01:10:23,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:23,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205333960] [2021-07-14 01:10:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:23,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:23,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:23,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:23,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:23,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:23,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:23,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:23,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:23,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:23,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:23,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:23,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:23,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:23,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:23,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:23,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:23,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:23,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205333960] [2021-07-14 01:10:23,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205333960] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:23,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:23,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:10:23,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490271213] [2021-07-14 01:10:23,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:10:23,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:23,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:10:23,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:10:23,793 INFO L87 Difference]: Start difference. First operand 7494 states and 20290 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:24,155 INFO L93 Difference]: Finished difference Result 13290 states and 33861 transitions. [2021-07-14 01:10:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 01:10:24,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:24,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:24,181 INFO L225 Difference]: With dead ends: 13290 [2021-07-14 01:10:24,181 INFO L226 Difference]: Without dead ends: 12905 [2021-07-14 01:10:24,182 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 77.8ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-07-14 01:10:24,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12905 states. [2021-07-14 01:10:24,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12905 to 7299. [2021-07-14 01:10:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7299 states, 7298 states have (on average 2.5791997807618525) internal successors, (18823), 7298 states have internal predecessors, (18823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:24,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7299 states to 7299 states and 18823 transitions. [2021-07-14 01:10:24,360 INFO L78 Accepts]: Start accepts. Automaton has 7299 states and 18823 transitions. Word has length 39 [2021-07-14 01:10:24,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:24,360 INFO L482 AbstractCegarLoop]: Abstraction has 7299 states and 18823 transitions. [2021-07-14 01:10:24,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7299 states and 18823 transitions. [2021-07-14 01:10:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:24,373 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:24,373 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:24,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-14 01:10:24,374 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:24,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:24,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1940047758, now seen corresponding path program 8 times [2021-07-14 01:10:24,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:24,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013545406] [2021-07-14 01:10:24,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:24,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:24,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:24,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:24,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:24,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:24,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:24,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:24,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:24,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:24,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:24,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:24,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:24,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:24,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:24,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:24,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:24,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:24,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:24,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:24,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:24,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:24,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013545406] [2021-07-14 01:10:24,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013545406] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:24,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:24,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:10:24,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143182702] [2021-07-14 01:10:24,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:10:24,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:24,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:10:24,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:24,443 INFO L87 Difference]: Start difference. First operand 7299 states and 18823 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:24,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:24,873 INFO L93 Difference]: Finished difference Result 12625 states and 32209 transitions. [2021-07-14 01:10:24,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 01:10:24,874 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:24,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:24,897 INFO L225 Difference]: With dead ends: 12625 [2021-07-14 01:10:24,897 INFO L226 Difference]: Without dead ends: 12314 [2021-07-14 01:10:24,900 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-07-14 01:10:24,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12314 states. [2021-07-14 01:10:25,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12314 to 7233. [2021-07-14 01:10:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7233 states, 7232 states have (on average 2.5869745575221237) internal successors, (18709), 7232 states have internal predecessors, (18709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 18709 transitions. [2021-07-14 01:10:25,081 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 18709 transitions. Word has length 39 [2021-07-14 01:10:25,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:25,081 INFO L482 AbstractCegarLoop]: Abstraction has 7233 states and 18709 transitions. [2021-07-14 01:10:25,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 18709 transitions. [2021-07-14 01:10:25,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:25,092 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:25,093 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:25,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-14 01:10:25,093 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:25,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:25,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1099618340, now seen corresponding path program 9 times [2021-07-14 01:10:25,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:25,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803455] [2021-07-14 01:10:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:25,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:25,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:25,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:25,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:25,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:25,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:25,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:25,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:25,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803455] [2021-07-14 01:10:25,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803455] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:25,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:25,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:10:25,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737534485] [2021-07-14 01:10:25,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:10:25,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:25,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:10:25,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:25,133 INFO L87 Difference]: Start difference. First operand 7233 states and 18709 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:25,372 INFO L93 Difference]: Finished difference Result 12295 states and 30364 transitions. [2021-07-14 01:10:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:10:25,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:25,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:25,393 INFO L225 Difference]: With dead ends: 12295 [2021-07-14 01:10:25,394 INFO L226 Difference]: Without dead ends: 12213 [2021-07-14 01:10:25,394 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:25,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12213 states. [2021-07-14 01:10:25,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12213 to 7726. [2021-07-14 01:10:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7726 states, 7725 states have (on average 2.493462783171521) internal successors, (19262), 7725 states have internal predecessors, (19262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7726 states to 7726 states and 19262 transitions. [2021-07-14 01:10:25,558 INFO L78 Accepts]: Start accepts. Automaton has 7726 states and 19262 transitions. Word has length 39 [2021-07-14 01:10:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:25,558 INFO L482 AbstractCegarLoop]: Abstraction has 7726 states and 19262 transitions. [2021-07-14 01:10:25,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:25,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7726 states and 19262 transitions. [2021-07-14 01:10:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:25,569 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:25,569 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:25,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-14 01:10:25,570 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:25,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:25,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1922829356, now seen corresponding path program 10 times [2021-07-14 01:10:25,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:25,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148604903] [2021-07-14 01:10:25,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:25,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:25,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:25,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:25,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:25,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:25,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:25,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:25,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:25,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:25,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:25,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148604903] [2021-07-14 01:10:25,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148604903] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:25,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:25,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 01:10:25,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878475510] [2021-07-14 01:10:25,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 01:10:25,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:25,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 01:10:25,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-07-14 01:10:25,620 INFO L87 Difference]: Start difference. First operand 7726 states and 19262 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:25,890 INFO L93 Difference]: Finished difference Result 10366 states and 24312 transitions. [2021-07-14 01:10:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 01:10:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:25,906 INFO L225 Difference]: With dead ends: 10366 [2021-07-14 01:10:25,906 INFO L226 Difference]: Without dead ends: 9897 [2021-07-14 01:10:25,906 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 65.9ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-07-14 01:10:25,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9897 states. [2021-07-14 01:10:26,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9897 to 7051. [2021-07-14 01:10:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7050 states have (on average 2.440851063829787) internal successors, (17208), 7050 states have internal predecessors, (17208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 17208 transitions. [2021-07-14 01:10:26,037 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 17208 transitions. Word has length 39 [2021-07-14 01:10:26,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:26,037 INFO L482 AbstractCegarLoop]: Abstraction has 7051 states and 17208 transitions. [2021-07-14 01:10:26,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 17208 transitions. [2021-07-14 01:10:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:26,047 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:26,047 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:26,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-14 01:10:26,047 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:26,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:26,048 INFO L82 PathProgramCache]: Analyzing trace with hash 384097700, now seen corresponding path program 11 times [2021-07-14 01:10:26,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:26,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209137909] [2021-07-14 01:10:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:26,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:26,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:26,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:26,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:26,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:26,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:26,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:26,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:26,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:26,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:26,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:26,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209137909] [2021-07-14 01:10:26,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209137909] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:26,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:26,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:10:26,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339365767] [2021-07-14 01:10:26,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:10:26,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:26,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:10:26,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:26,106 INFO L87 Difference]: Start difference. First operand 7051 states and 17208 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:26,556 INFO L93 Difference]: Finished difference Result 10070 states and 23892 transitions. [2021-07-14 01:10:26,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 01:10:26,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:26,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:26,573 INFO L225 Difference]: With dead ends: 10070 [2021-07-14 01:10:26,573 INFO L226 Difference]: Without dead ends: 9745 [2021-07-14 01:10:26,574 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-07-14 01:10:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9745 states. [2021-07-14 01:10:26,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9745 to 6919. [2021-07-14 01:10:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6919 states, 6918 states have (on average 2.452153801676785) internal successors, (16964), 6918 states have internal predecessors, (16964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:26,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6919 states to 6919 states and 16964 transitions. [2021-07-14 01:10:26,706 INFO L78 Accepts]: Start accepts. Automaton has 6919 states and 16964 transitions. Word has length 39 [2021-07-14 01:10:26,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:26,706 INFO L482 AbstractCegarLoop]: Abstraction has 6919 states and 16964 transitions. [2021-07-14 01:10:26,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:26,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6919 states and 16964 transitions. [2021-07-14 01:10:26,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:26,716 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:26,716 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:26,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-14 01:10:26,716 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:26,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:26,717 INFO L82 PathProgramCache]: Analyzing trace with hash -2125987632, now seen corresponding path program 12 times [2021-07-14 01:10:26,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:26,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763484444] [2021-07-14 01:10:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:26,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:26,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:26,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:26,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:26,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:26,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:26,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:26,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:26,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763484444] [2021-07-14 01:10:26,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763484444] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:26,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:26,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-14 01:10:26,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838336133] [2021-07-14 01:10:26,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 01:10:26,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:26,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 01:10:26,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-14 01:10:26,742 INFO L87 Difference]: Start difference. First operand 6919 states and 16964 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:26,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:26,866 INFO L93 Difference]: Finished difference Result 11577 states and 28104 transitions. [2021-07-14 01:10:26,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 01:10:26,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:26,884 INFO L225 Difference]: With dead ends: 11577 [2021-07-14 01:10:26,884 INFO L226 Difference]: Without dead ends: 11577 [2021-07-14 01:10:26,885 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:10:26,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11577 states. [2021-07-14 01:10:26,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11577 to 6883. [2021-07-14 01:10:26,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6883 states, 6882 states have (on average 2.433449578610869) internal successors, (16747), 6882 states have internal predecessors, (16747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 16747 transitions. [2021-07-14 01:10:27,002 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 16747 transitions. Word has length 39 [2021-07-14 01:10:27,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:27,002 INFO L482 AbstractCegarLoop]: Abstraction has 6883 states and 16747 transitions. [2021-07-14 01:10:27,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:27,002 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 16747 transitions. [2021-07-14 01:10:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:27,011 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:27,011 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:27,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-14 01:10:27,012 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:27,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:27,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1251541004, now seen corresponding path program 13 times [2021-07-14 01:10:27,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:27,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676389642] [2021-07-14 01:10:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:27,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:27,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:27,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:27,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:27,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676389642] [2021-07-14 01:10:27,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676389642] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:27,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:27,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:10:27,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823402161] [2021-07-14 01:10:27,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:10:27,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:27,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:10:27,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:10:27,054 INFO L87 Difference]: Start difference. First operand 6883 states and 16747 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:27,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:27,376 INFO L93 Difference]: Finished difference Result 11905 states and 28206 transitions. [2021-07-14 01:10:27,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 01:10:27,376 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:27,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:27,395 INFO L225 Difference]: With dead ends: 11905 [2021-07-14 01:10:27,395 INFO L226 Difference]: Without dead ends: 11809 [2021-07-14 01:10:27,396 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:10:27,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11809 states. [2021-07-14 01:10:27,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11809 to 7093. [2021-07-14 01:10:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7093 states, 7092 states have (on average 2.4077834179357023) internal successors, (17076), 7092 states have internal predecessors, (17076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:27,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 17076 transitions. [2021-07-14 01:10:27,517 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 17076 transitions. Word has length 39 [2021-07-14 01:10:27,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:27,517 INFO L482 AbstractCegarLoop]: Abstraction has 7093 states and 17076 transitions. [2021-07-14 01:10:27,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 17076 transitions. [2021-07-14 01:10:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:27,527 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:27,527 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:27,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-14 01:10:27,528 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:27,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:27,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1740771022, now seen corresponding path program 14 times [2021-07-14 01:10:27,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:27,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669303985] [2021-07-14 01:10:27,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:27,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:27,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:27,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:27,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:27,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669303985] [2021-07-14 01:10:27,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669303985] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:27,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:27,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:10:27,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298404254] [2021-07-14 01:10:27,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:10:27,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:27,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:10:27,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:27,560 INFO L87 Difference]: Start difference. First operand 7093 states and 17076 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:27,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:27,720 INFO L93 Difference]: Finished difference Result 10183 states and 22901 transitions. [2021-07-14 01:10:27,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:10:27,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:27,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:27,734 INFO L225 Difference]: With dead ends: 10183 [2021-07-14 01:10:27,735 INFO L226 Difference]: Without dead ends: 9859 [2021-07-14 01:10:27,735 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:27,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9859 states. [2021-07-14 01:10:27,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9859 to 5471. [2021-07-14 01:10:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5471 states, 5470 states have (on average 2.240402193784278) internal successors, (12255), 5470 states have internal predecessors, (12255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 12255 transitions. [2021-07-14 01:10:27,822 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 12255 transitions. Word has length 39 [2021-07-14 01:10:27,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:27,822 INFO L482 AbstractCegarLoop]: Abstraction has 5471 states and 12255 transitions. [2021-07-14 01:10:27,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:27,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 12255 transitions. [2021-07-14 01:10:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:27,829 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:27,829 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:27,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-14 01:10:27,829 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:27,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:27,830 INFO L82 PathProgramCache]: Analyzing trace with hash 623469036, now seen corresponding path program 15 times [2021-07-14 01:10:27,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:27,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845418490] [2021-07-14 01:10:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:27,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:27,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:27,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:27,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:27,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:27,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:27,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845418490] [2021-07-14 01:10:27,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845418490] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:27,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:27,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:10:27,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709874575] [2021-07-14 01:10:27,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:10:27,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:27,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:10:27,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:10:27,879 INFO L87 Difference]: Start difference. First operand 5471 states and 12255 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:28,208 INFO L93 Difference]: Finished difference Result 9553 states and 21275 transitions. [2021-07-14 01:10:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 01:10:28,209 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:28,231 INFO L225 Difference]: With dead ends: 9553 [2021-07-14 01:10:28,232 INFO L226 Difference]: Without dead ends: 8925 [2021-07-14 01:10:28,236 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:10:28,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8925 states. [2021-07-14 01:10:28,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8925 to 5201. [2021-07-14 01:10:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 2.2348076923076925) internal successors, (11621), 5200 states have internal predecessors, (11621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:28,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 11621 transitions. [2021-07-14 01:10:28,320 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 11621 transitions. Word has length 39 [2021-07-14 01:10:28,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:28,320 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 11621 transitions. [2021-07-14 01:10:28,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 11621 transitions. [2021-07-14 01:10:28,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:28,326 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:28,326 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:28,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-14 01:10:28,326 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:28,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:28,326 INFO L82 PathProgramCache]: Analyzing trace with hash 94169304, now seen corresponding path program 16 times [2021-07-14 01:10:28,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:28,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886123112] [2021-07-14 01:10:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:28,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:28,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:28,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:28,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:28,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:28,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:28,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:28,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:28,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:28,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886123112] [2021-07-14 01:10:28,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886123112] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:28,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:28,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:10:28,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900924819] [2021-07-14 01:10:28,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:10:28,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:28,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:10:28,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:28,359 INFO L87 Difference]: Start difference. First operand 5201 states and 11621 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:28,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:28,518 INFO L93 Difference]: Finished difference Result 9227 states and 20534 transitions. [2021-07-14 01:10:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:10:28,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:28,532 INFO L225 Difference]: With dead ends: 9227 [2021-07-14 01:10:28,532 INFO L226 Difference]: Without dead ends: 9124 [2021-07-14 01:10:28,532 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9124 states. [2021-07-14 01:10:28,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9124 to 4832. [2021-07-14 01:10:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4832 states, 4831 states have (on average 2.1898157731318566) internal successors, (10579), 4831 states have internal predecessors, (10579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 10579 transitions. [2021-07-14 01:10:28,611 INFO L78 Accepts]: Start accepts. Automaton has 4832 states and 10579 transitions. Word has length 39 [2021-07-14 01:10:28,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:28,612 INFO L482 AbstractCegarLoop]: Abstraction has 4832 states and 10579 transitions. [2021-07-14 01:10:28,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:28,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4832 states and 10579 transitions. [2021-07-14 01:10:28,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:28,618 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:28,618 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:28,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-14 01:10:28,618 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:28,618 INFO L82 PathProgramCache]: Analyzing trace with hash -745293622, now seen corresponding path program 17 times [2021-07-14 01:10:28,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:28,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035544785] [2021-07-14 01:10:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:28,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:28,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:28,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:28,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:28,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:28,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:28,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:28,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:28,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:28,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:28,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:28,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:28,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035544785] [2021-07-14 01:10:28,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035544785] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:28,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:28,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:10:28,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733611189] [2021-07-14 01:10:28,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:10:28,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:28,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:10:28,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:10:28,663 INFO L87 Difference]: Start difference. First operand 4832 states and 10579 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:28,928 INFO L93 Difference]: Finished difference Result 8718 states and 19359 transitions. [2021-07-14 01:10:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 01:10:28,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:28,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:28,943 INFO L225 Difference]: With dead ends: 8718 [2021-07-14 01:10:28,943 INFO L226 Difference]: Without dead ends: 8538 [2021-07-14 01:10:28,943 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 64.4ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:10:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8538 states. [2021-07-14 01:10:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8538 to 4708. [2021-07-14 01:10:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4708 states, 4707 states have (on average 2.1939664329721693) internal successors, (10327), 4707 states have internal predecessors, (10327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4708 states to 4708 states and 10327 transitions. [2021-07-14 01:10:29,016 INFO L78 Accepts]: Start accepts. Automaton has 4708 states and 10327 transitions. Word has length 39 [2021-07-14 01:10:29,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:29,016 INFO L482 AbstractCegarLoop]: Abstraction has 4708 states and 10327 transitions. [2021-07-14 01:10:29,017 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 4708 states and 10327 transitions. [2021-07-14 01:10:29,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:29,021 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:29,022 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:29,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-14 01:10:29,022 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:29,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:29,022 INFO L82 PathProgramCache]: Analyzing trace with hash -264971478, now seen corresponding path program 18 times [2021-07-14 01:10:29,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:29,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409710881] [2021-07-14 01:10:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:29,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:29,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:29,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:29,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:29,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:29,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409710881] [2021-07-14 01:10:29,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409710881] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:29,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:29,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:10:29,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122074051] [2021-07-14 01:10:29,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:10:29,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:29,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:10:29,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:10:29,051 INFO L87 Difference]: Start difference. First operand 4708 states and 10327 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:29,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:29,171 INFO L93 Difference]: Finished difference Result 7454 states and 16966 transitions. [2021-07-14 01:10:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 01:10:29,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:29,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:29,182 INFO L225 Difference]: With dead ends: 7454 [2021-07-14 01:10:29,182 INFO L226 Difference]: Without dead ends: 7184 [2021-07-14 01:10:29,182 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2021-07-14 01:10:29,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 3818. [2021-07-14 01:10:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3817 states have (on average 2.2418129421011264) internal successors, (8557), 3817 states have internal predecessors, (8557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 8557 transitions. [2021-07-14 01:10:29,241 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 8557 transitions. Word has length 39 [2021-07-14 01:10:29,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:29,241 INFO L482 AbstractCegarLoop]: Abstraction has 3818 states and 8557 transitions. [2021-07-14 01:10:29,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:29,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 8557 transitions. [2021-07-14 01:10:29,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:29,245 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:29,246 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:29,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-14 01:10:29,246 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:29,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:29,246 INFO L82 PathProgramCache]: Analyzing trace with hash 198639788, now seen corresponding path program 19 times [2021-07-14 01:10:29,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:29,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616824522] [2021-07-14 01:10:29,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:29,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:29,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:29,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:29,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:29,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:29,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616824522] [2021-07-14 01:10:29,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616824522] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:29,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:29,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:10:29,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409484650] [2021-07-14 01:10:29,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:10:29,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:29,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:10:29,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:29,295 INFO L87 Difference]: Start difference. First operand 3818 states and 8557 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:29,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:29,442 INFO L93 Difference]: Finished difference Result 4758 states and 10509 transitions. [2021-07-14 01:10:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:10:29,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:29,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:29,447 INFO L225 Difference]: With dead ends: 4758 [2021-07-14 01:10:29,448 INFO L226 Difference]: Without dead ends: 3583 [2021-07-14 01:10:29,448 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 33.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:29,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2021-07-14 01:10:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 2189. [2021-07-14 01:10:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2189 states, 2188 states have (on average 2.259597806215722) internal successors, (4944), 2188 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 4944 transitions. [2021-07-14 01:10:29,474 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 4944 transitions. Word has length 39 [2021-07-14 01:10:29,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:29,474 INFO L482 AbstractCegarLoop]: Abstraction has 2189 states and 4944 transitions. [2021-07-14 01:10:29,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:29,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 4944 transitions. [2021-07-14 01:10:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:29,476 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:29,476 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:29,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-14 01:10:29,476 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:29,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:29,476 INFO L82 PathProgramCache]: Analyzing trace with hash -757944946, now seen corresponding path program 20 times [2021-07-14 01:10:29,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:29,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943667725] [2021-07-14 01:10:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:29,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:29,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:29,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:29,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:29,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943667725] [2021-07-14 01:10:29,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943667725] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:29,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:29,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:10:29,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682038899] [2021-07-14 01:10:29,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:10:29,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:29,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:10:29,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:10:29,525 INFO L87 Difference]: Start difference. First operand 2189 states and 4944 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:29,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:29,765 INFO L93 Difference]: Finished difference Result 3425 states and 7696 transitions. [2021-07-14 01:10:29,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 01:10:29,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:29,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:29,769 INFO L225 Difference]: With dead ends: 3425 [2021-07-14 01:10:29,769 INFO L226 Difference]: Without dead ends: 2329 [2021-07-14 01:10:29,770 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 66.6ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-07-14 01:10:29,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2021-07-14 01:10:29,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 1645. [2021-07-14 01:10:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 2.2950121654501214) internal successors, (3773), 1644 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 3773 transitions. [2021-07-14 01:10:29,789 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 3773 transitions. Word has length 39 [2021-07-14 01:10:29,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:29,789 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 3773 transitions. [2021-07-14 01:10:29,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:29,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 3773 transitions. [2021-07-14 01:10:29,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:29,791 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:29,791 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:29,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-14 01:10:29,791 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:29,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:29,792 INFO L82 PathProgramCache]: Analyzing trace with hash -722963600, now seen corresponding path program 21 times [2021-07-14 01:10:29,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:29,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491236362] [2021-07-14 01:10:29,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:29,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:29,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:29,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:29,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:29,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:29,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491236362] [2021-07-14 01:10:29,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491236362] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:29,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:29,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-14 01:10:29,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372971277] [2021-07-14 01:10:29,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 01:10:29,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:29,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 01:10:29,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:29,844 INFO L87 Difference]: Start difference. First operand 1645 states and 3773 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:30,049 INFO L93 Difference]: Finished difference Result 1777 states and 4027 transitions. [2021-07-14 01:10:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 01:10:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:30,051 INFO L225 Difference]: With dead ends: 1777 [2021-07-14 01:10:30,051 INFO L226 Difference]: Without dead ends: 1426 [2021-07-14 01:10:30,052 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-07-14 01:10:30,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-07-14 01:10:30,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1426. [2021-07-14 01:10:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.3480701754385964) internal successors, (3346), 1425 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 3346 transitions. [2021-07-14 01:10:30,065 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 3346 transitions. Word has length 39 [2021-07-14 01:10:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:30,065 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 3346 transitions. [2021-07-14 01:10:30,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 3346 transitions. [2021-07-14 01:10:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:30,067 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:30,067 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:30,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-14 01:10:30,067 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:30,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1112925528, now seen corresponding path program 22 times [2021-07-14 01:10:30,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:30,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458953605] [2021-07-14 01:10:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:30,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:30,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:30,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:30,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:30,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458953605] [2021-07-14 01:10:30,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458953605] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:30,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:30,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 01:10:30,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644904601] [2021-07-14 01:10:30,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 01:10:30,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:30,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 01:10:30,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-14 01:10:30,102 INFO L87 Difference]: Start difference. First operand 1426 states and 3346 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:30,193 INFO L93 Difference]: Finished difference Result 1274 states and 2969 transitions. [2021-07-14 01:10:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 01:10:30,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:30,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:30,195 INFO L225 Difference]: With dead ends: 1274 [2021-07-14 01:10:30,195 INFO L226 Difference]: Without dead ends: 1238 [2021-07-14 01:10:30,195 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:30,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-07-14 01:10:30,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 902. [2021-07-14 01:10:30,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 2.297447280799112) internal successors, (2070), 901 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 2070 transitions. [2021-07-14 01:10:30,206 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 2070 transitions. Word has length 39 [2021-07-14 01:10:30,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:30,206 INFO L482 AbstractCegarLoop]: Abstraction has 902 states and 2070 transitions. [2021-07-14 01:10:30,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:30,207 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 2070 transitions. [2021-07-14 01:10:30,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:30,207 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:30,208 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:30,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-14 01:10:30,208 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:30,208 INFO L82 PathProgramCache]: Analyzing trace with hash 696630104, now seen corresponding path program 23 times [2021-07-14 01:10:30,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:30,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992810367] [2021-07-14 01:10:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:30,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:30,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:30,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:30,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:30,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992810367] [2021-07-14 01:10:30,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992810367] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:30,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:30,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 01:10:30,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859356745] [2021-07-14 01:10:30,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 01:10:30,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:30,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 01:10:30,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-07-14 01:10:30,264 INFO L87 Difference]: Start difference. First operand 902 states and 2070 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:30,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:30,372 INFO L93 Difference]: Finished difference Result 454 states and 843 transitions. [2021-07-14 01:10:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 01:10:30,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:30,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:30,373 INFO L225 Difference]: With dead ends: 454 [2021-07-14 01:10:30,373 INFO L226 Difference]: Without dead ends: 241 [2021-07-14 01:10:30,373 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-14 01:10:30,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-07-14 01:10:30,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 173. [2021-07-14 01:10:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.8837209302325582) internal successors, (324), 172 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 324 transitions. [2021-07-14 01:10:30,375 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 324 transitions. Word has length 39 [2021-07-14 01:10:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:30,375 INFO L482 AbstractCegarLoop]: Abstraction has 173 states and 324 transitions. [2021-07-14 01:10:30,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 324 transitions. [2021-07-14 01:10:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-14 01:10:30,376 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:10:30,376 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:10:30,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-14 01:10:30,376 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 01:10:30,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:10:30,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1323505184, now seen corresponding path program 24 times [2021-07-14 01:10:30,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:10:30,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750560336] [2021-07-14 01:10:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:10:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:10:30,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 01:10:30,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:10:30,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-14 01:10:30,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:10:30,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:10:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:10:30,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:10:30,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750560336] [2021-07-14 01:10:30,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750560336] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:10:30,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:10:30,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 01:10:30,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656734641] [2021-07-14 01:10:30,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 01:10:30,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:10:30,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 01:10:30,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-14 01:10:30,419 INFO L87 Difference]: Start difference. First operand 173 states and 324 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:30,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:10:30,508 INFO L93 Difference]: Finished difference Result 129 states and 200 transitions. [2021-07-14 01:10:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 01:10:30,509 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-07-14 01:10:30,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:10:30,509 INFO L225 Difference]: With dead ends: 129 [2021-07-14 01:10:30,509 INFO L226 Difference]: Without dead ends: 0 [2021-07-14 01:10:30,509 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-07-14 01:10:30,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-14 01:10:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-14 01:10:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-14 01:10:30,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-07-14 01:10:30,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:10:30,509 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-14 01:10:30,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 01:10:30,509 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-14 01:10:30,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-14 01:10:30,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-14 01:10:30,511 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 01:10:30,512 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 01:10:30 BasicIcfg [2021-07-14 01:10:30,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 01:10:30,513 INFO L168 Benchmark]: Toolchain (without parser) took 13159.86 ms. Allocated memory was 174.1 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 153.4 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 8.0 GB. [2021-07-14 01:10:30,513 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.43 ms. Allocated memory is still 174.1 MB. Free memory is still 154.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 01:10:30,513 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.88 ms. Allocated memory is still 174.1 MB. Free memory was 153.3 MB in the beginning and 151.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 01:10:30,513 INFO L168 Benchmark]: Boogie Preprocessor took 14.63 ms. Allocated memory is still 174.1 MB. Free memory was 151.9 MB in the beginning and 150.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 01:10:30,513 INFO L168 Benchmark]: RCFGBuilder took 248.08 ms. Allocated memory is still 174.1 MB. Free memory was 150.9 MB in the beginning and 135.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-07-14 01:10:30,513 INFO L168 Benchmark]: TraceAbstraction took 12863.44 ms. Allocated memory was 174.1 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 135.3 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 8.0 GB. [2021-07-14 01:10:30,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.43 ms. Allocated memory is still 174.1 MB. Free memory is still 154.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 17.88 ms. Allocated memory is still 174.1 MB. Free memory was 153.3 MB in the beginning and 151.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.63 ms. Allocated memory is still 174.1 MB. Free memory was 151.9 MB in the beginning and 150.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 248.08 ms. Allocated memory is still 174.1 MB. Free memory was 150.9 MB in the beginning and 135.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12863.44 ms. Allocated memory was 174.1 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 135.3 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 60861, positive: 56190, positive conditional: 56190, positive unconditional: 0, negative: 4671, negative conditional: 4671, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 60861, positive: 56190, positive conditional: 0, positive unconditional: 56190, negative: 4671, negative conditional: 0, negative unconditional: 4671, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 494, positive: 454, positive conditional: 0, positive unconditional: 454, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 494, positive: 419, positive conditional: 0, positive unconditional: 419, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 175, positive: 77, positive conditional: 0, positive unconditional: 77, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 60861, positive: 55736, positive conditional: 0, positive unconditional: 55736, negative: 4631, negative conditional: 0, negative unconditional: 4631, unknown: 494, unknown conditional: 0, unknown unconditional: 494] , Statistics on independence cache: Total cache size (in pairs): 494, Positive cache size: 454, Positive conditional cache size: 0, Positive unconditional cache size: 454, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40, Independence queries for same thread: 0 - PositiveResult [Line: 95]: 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 11 procedures, 83 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12709.3ms, OverallIterations: 24, TraceHistogramMax: 1, EmptinessCheckTime: 351.1ms, AutomataDifference: 6633.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1100.6ms, PartialOrderReductionTime: 1085.5ms, HoareTripleCheckerStatistics: 1289 SDtfs, 2556 SDslu, 5401 SDs, 0 SdLazy, 6935 SolverSat, 1271 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3120.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1375.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12444occurred in iteration=0, InterpolantAutomatonStates: 263, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3073.7ms AutomataMinimizationTime, 24 MinimizatonAttempts, 79408 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.4ms SsaConstructionTime, 165.0ms SatisfiabilityAnalysisTime, 1134.3ms InterpolantComputationTime, 936 NumberOfCodeBlocks, 936 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 912 ConstructedInterpolants, 0 QuantifiedInterpolants, 2505 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 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...