/usr/bin/java -Xmx16000000000 -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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 03:38:15,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 03:38:15,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 03:38:15,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 03:38:15,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 03:38:15,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 03:38:15,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 03:38:15,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 03:38:15,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 03:38:15,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 03:38:15,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 03:38:15,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 03:38:15,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 03:38:15,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 03:38:15,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 03:38:15,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 03:38:15,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 03:38:15,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 03:38:15,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 03:38:15,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 03:38:15,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 03:38:15,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 03:38:15,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 03:38:15,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 03:38:15,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-05 03:38:15,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 03:38:15,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 03:38:15,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 03:38:15,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 03:38:15,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 03:38:15,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 03:38:15,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 03:38:15,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 03:38:15,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 03:38:15,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 03:38:15,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 03:38:15,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 03:38:15,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 03:38:15,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 03:38:15,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 03:38:15,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 03:38:15,924 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.epf [2021-06-05 03:38:15,959 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 03:38:15,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 03:38:15,960 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 03:38:15,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 03:38:15,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 03:38:15,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 03:38:15,962 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 03:38:15,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 03:38:15,963 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 03:38:15,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 03:38:15,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 03:38:15,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 03:38:15,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 03:38:15,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 03:38:15,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 03:38:15,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 03:38:15,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 03:38:15,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 03:38:15,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 03:38:15,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 03:38:15,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 03:38:15,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 03:38:15,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 03:38:15,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 03:38:15,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 03:38:15,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 03:38:15,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 03:38:15,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 03:38:15,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 03:38:15,966 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 03:38:15,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 03:38:15,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 03:38:16,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 03:38:16,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 03:38:16,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 03:38:16,307 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 03:38:16,308 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 03:38:16,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2021-06-05 03:38:16,309 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2021-06-05 03:38:16,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 03:38:16,342 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 03:38:16,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 03:38:16,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 03:38:16,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 03:38:16,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:16" (1/1) ... [2021-06-05 03:38:16,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:16" (1/1) ... [2021-06-05 03:38:16,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 03:38:16,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 03:38:16,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 03:38:16,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 03:38:16,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:16" (1/1) ... [2021-06-05 03:38:16,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:16" (1/1) ... [2021-06-05 03:38:16,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:16" (1/1) ... [2021-06-05 03:38:16,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:16" (1/1) ... [2021-06-05 03:38:16,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:16" (1/1) ... [2021-06-05 03:38:16,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:16" (1/1) ... [2021-06-05 03:38:16,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:16" (1/1) ... [2021-06-05 03:38:16,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 03:38:16,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 03:38:16,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 03:38:16,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 03:38:16,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 03:38:16,485 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-05 03:38:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-05 03:38:16,486 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-05 03:38:16,486 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-05 03:38:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-05 03:38:16,486 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-05 03:38:16,486 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-05 03:38:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-05 03:38:16,486 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-05 03:38:16,487 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-05 03:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-05 03:38:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-05 03:38:16,487 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-05 03:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-05 03:38:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-05 03:38:16,487 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 03:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 03:38:16,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 03:38:16,488 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 03:38:16,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 03:38:16,641 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 03:38:16,642 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:38:16 BoogieIcfgContainer [2021-06-05 03:38:16,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 03:38:16,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 03:38:16,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 03:38:16,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 03:38:16,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:38:16" (1/2) ... [2021-06-05 03:38:16,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8940110 and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:38:16, skipping insertion in model container [2021-06-05 03:38:16,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:38:16" (2/2) ... [2021-06-05 03:38:16,649 INFO L111 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2021-06-05 03:38:16,653 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 03:38:16,654 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 03:38:16,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 03:38:16,654 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 03:38:16,706 INFO L149 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2021-06-05 03:38:16,725 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-05 03:38:16,742 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:38:16,742 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:38:16,749 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:38:16,749 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:38:16,750 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:38:16,750 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:38:16,750 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:38:16,750 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:38:16,759 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 48 transitions, 196 flow [2021-06-05 03:38:16,964 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1148 states, 1146 states have (on average 3.7068062827225132) internal successors, (4248), 1147 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 1148 states, 1146 states have (on average 3.7068062827225132) internal successors, (4248), 1147 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:16,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:16,992 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:16,993 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:16,994 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:16,998 INFO L82 PathProgramCache]: Analyzing trace with hash 921696598, now seen corresponding path program 1 times [2021-06-05 03:38:17,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:17,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138351031] [2021-06-05 03:38:17,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:17,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:17,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138351031] [2021-06-05 03:38:17,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138351031] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:17,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:17,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:38:17,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992897099] [2021-06-05 03:38:17,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:38:17,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:17,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:38:17,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:17,139 INFO L87 Difference]: Start difference. First operand has 1148 states, 1146 states have (on average 3.7068062827225132) internal successors, (4248), 1147 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:17,179 INFO L93 Difference]: Finished difference Result 959 states and 3411 transitions. [2021-06-05 03:38:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:38:17,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:17,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:17,200 INFO L225 Difference]: With dead ends: 959 [2021-06-05 03:38:17,200 INFO L226 Difference]: Without dead ends: 957 [2021-06-05 03:38:17,202 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:17,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-06-05 03:38:17,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 957. [2021-06-05 03:38:17,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.5658995815899583) internal successors, (3409), 956 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3409 transitions. [2021-06-05 03:38:17,312 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3409 transitions. Word has length 21 [2021-06-05 03:38:17,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:17,314 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3409 transitions. [2021-06-05 03:38:17,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3409 transitions. [2021-06-05 03:38:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:17,320 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:17,320 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:17,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 03:38:17,321 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:17,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:17,324 INFO L82 PathProgramCache]: Analyzing trace with hash 79574102, now seen corresponding path program 1 times [2021-06-05 03:38:17,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:17,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126487950] [2021-06-05 03:38:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:17,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:17,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126487950] [2021-06-05 03:38:17,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126487950] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:17,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:17,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:38:17,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906996248] [2021-06-05 03:38:17,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:38:17,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:17,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:38:17,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:17,376 INFO L87 Difference]: Start difference. First operand 957 states and 3409 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:17,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:17,401 INFO L93 Difference]: Finished difference Result 741 states and 2572 transitions. [2021-06-05 03:38:17,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:38:17,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:17,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:17,407 INFO L225 Difference]: With dead ends: 741 [2021-06-05 03:38:17,407 INFO L226 Difference]: Without dead ends: 741 [2021-06-05 03:38:17,408 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-06-05 03:38:17,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2021-06-05 03:38:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 3.4756756756756757) internal successors, (2572), 740 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 2572 transitions. [2021-06-05 03:38:17,449 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 2572 transitions. Word has length 21 [2021-06-05 03:38:17,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:17,450 INFO L482 AbstractCegarLoop]: Abstraction has 741 states and 2572 transitions. [2021-06-05 03:38:17,450 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:17,451 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 2572 transitions. [2021-06-05 03:38:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:17,454 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:17,454 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:17,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 03:38:17,455 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:17,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1823307896, now seen corresponding path program 1 times [2021-06-05 03:38:17,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:17,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757854440] [2021-06-05 03:38:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:17,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:17,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757854440] [2021-06-05 03:38:17,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757854440] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:17,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:17,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:38:17,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337984214] [2021-06-05 03:38:17,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:38:17,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:17,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:38:17,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:17,510 INFO L87 Difference]: Start difference. First operand 741 states and 2572 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:17,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:17,535 INFO L93 Difference]: Finished difference Result 567 states and 1945 transitions. [2021-06-05 03:38:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:38:17,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:17,542 INFO L225 Difference]: With dead ends: 567 [2021-06-05 03:38:17,542 INFO L226 Difference]: Without dead ends: 567 [2021-06-05 03:38:17,543 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-06-05 03:38:17,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2021-06-05 03:38:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 3.4363957597173145) internal successors, (1945), 566 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1945 transitions. [2021-06-05 03:38:17,568 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1945 transitions. Word has length 21 [2021-06-05 03:38:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:17,568 INFO L482 AbstractCegarLoop]: Abstraction has 567 states and 1945 transitions. [2021-06-05 03:38:17,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1945 transitions. [2021-06-05 03:38:17,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:17,570 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:17,570 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:17,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 03:38:17,571 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:17,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:17,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1824113276, now seen corresponding path program 1 times [2021-06-05 03:38:17,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:17,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883759081] [2021-06-05 03:38:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:17,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:17,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883759081] [2021-06-05 03:38:17,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883759081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:17,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:17,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:17,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923193901] [2021-06-05 03:38:17,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:17,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:17,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:17,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:17,837 INFO L87 Difference]: Start difference. First operand 567 states and 1945 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:17,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:17,917 INFO L93 Difference]: Finished difference Result 1267 states and 4072 transitions. [2021-06-05 03:38:17,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:17,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:17,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:17,927 INFO L225 Difference]: With dead ends: 1267 [2021-06-05 03:38:17,927 INFO L226 Difference]: Without dead ends: 1133 [2021-06-05 03:38:17,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-06-05 03:38:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 616. [2021-06-05 03:38:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 3.4) internal successors, (2091), 615 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:17,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 2091 transitions. [2021-06-05 03:38:17,962 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 2091 transitions. Word has length 21 [2021-06-05 03:38:17,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:17,963 INFO L482 AbstractCegarLoop]: Abstraction has 616 states and 2091 transitions. [2021-06-05 03:38:17,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:17,963 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 2091 transitions. [2021-06-05 03:38:17,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:17,965 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:17,966 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:17,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 03:38:17,966 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:17,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1418935620, now seen corresponding path program 2 times [2021-06-05 03:38:17,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:17,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145130380] [2021-06-05 03:38:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:18,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:18,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145130380] [2021-06-05 03:38:18,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145130380] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:18,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:18,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:18,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115733648] [2021-06-05 03:38:18,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:18,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:18,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:18,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:18,147 INFO L87 Difference]: Start difference. First operand 616 states and 2091 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:18,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:18,236 INFO L93 Difference]: Finished difference Result 1250 states and 3995 transitions. [2021-06-05 03:38:18,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:18,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:18,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:18,244 INFO L225 Difference]: With dead ends: 1250 [2021-06-05 03:38:18,245 INFO L226 Difference]: Without dead ends: 1098 [2021-06-05 03:38:18,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:18,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-06-05 03:38:18,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 581. [2021-06-05 03:38:18,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 3.420689655172414) internal successors, (1984), 580 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:18,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1984 transitions. [2021-06-05 03:38:18,277 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1984 transitions. Word has length 21 [2021-06-05 03:38:18,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:18,277 INFO L482 AbstractCegarLoop]: Abstraction has 581 states and 1984 transitions. [2021-06-05 03:38:18,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:18,278 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1984 transitions. [2021-06-05 03:38:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:18,280 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:18,280 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:18,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 03:38:18,280 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:18,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:18,281 INFO L82 PathProgramCache]: Analyzing trace with hash 213760410, now seen corresponding path program 3 times [2021-06-05 03:38:18,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:18,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175427809] [2021-06-05 03:38:18,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:18,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:18,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175427809] [2021-06-05 03:38:18,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175427809] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:18,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:18,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:18,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580393039] [2021-06-05 03:38:18,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:18,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:18,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:18,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:18,421 INFO L87 Difference]: Start difference. First operand 581 states and 1984 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:18,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:18,509 INFO L93 Difference]: Finished difference Result 1207 states and 3862 transitions. [2021-06-05 03:38:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:18,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:18,516 INFO L225 Difference]: With dead ends: 1207 [2021-06-05 03:38:18,516 INFO L226 Difference]: Without dead ends: 1104 [2021-06-05 03:38:18,517 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2021-06-05 03:38:18,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 601. [2021-06-05 03:38:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 3.4066666666666667) internal successors, (2044), 600 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 2044 transitions. [2021-06-05 03:38:18,544 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 2044 transitions. Word has length 21 [2021-06-05 03:38:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:18,545 INFO L482 AbstractCegarLoop]: Abstraction has 601 states and 2044 transitions. [2021-06-05 03:38:18,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 2044 transitions. [2021-06-05 03:38:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:18,547 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:18,547 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:18,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 03:38:18,547 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:18,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:18,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1651666564, now seen corresponding path program 4 times [2021-06-05 03:38:18,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:18,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997497313] [2021-06-05 03:38:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:18,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:18,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997497313] [2021-06-05 03:38:18,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997497313] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:18,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:18,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:18,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157984003] [2021-06-05 03:38:18,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:18,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:18,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:18,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:18,696 INFO L87 Difference]: Start difference. First operand 601 states and 2044 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:18,745 INFO L93 Difference]: Finished difference Result 1238 states and 3949 transitions. [2021-06-05 03:38:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:18,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:18,752 INFO L225 Difference]: With dead ends: 1238 [2021-06-05 03:38:18,753 INFO L226 Difference]: Without dead ends: 1084 [2021-06-05 03:38:18,755 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:18,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-06-05 03:38:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 581. [2021-06-05 03:38:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 3.4034482758620688) internal successors, (1974), 580 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1974 transitions. [2021-06-05 03:38:18,781 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1974 transitions. Word has length 21 [2021-06-05 03:38:18,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:18,782 INFO L482 AbstractCegarLoop]: Abstraction has 581 states and 1974 transitions. [2021-06-05 03:38:18,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:18,782 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1974 transitions. [2021-06-05 03:38:18,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:18,784 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:18,784 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:18,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 03:38:18,785 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:18,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:18,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1790028250, now seen corresponding path program 5 times [2021-06-05 03:38:18,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:18,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078627838] [2021-06-05 03:38:18,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:18,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:18,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078627838] [2021-06-05 03:38:18,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078627838] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:18,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:18,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:18,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427060798] [2021-06-05 03:38:18,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:18,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:18,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:18,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:18,873 INFO L87 Difference]: Start difference. First operand 581 states and 1974 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:18,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:18,941 INFO L93 Difference]: Finished difference Result 1182 states and 3774 transitions. [2021-06-05 03:38:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:18,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:18,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:18,947 INFO L225 Difference]: With dead ends: 1182 [2021-06-05 03:38:18,948 INFO L226 Difference]: Without dead ends: 1079 [2021-06-05 03:38:18,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-06-05 03:38:18,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 593. [2021-06-05 03:38:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 3.3885135135135136) internal successors, (2006), 592 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:18,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 2006 transitions. [2021-06-05 03:38:18,976 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 2006 transitions. Word has length 21 [2021-06-05 03:38:18,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:18,976 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 2006 transitions. [2021-06-05 03:38:18,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:18,977 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 2006 transitions. [2021-06-05 03:38:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:18,979 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:18,979 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:18,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 03:38:18,979 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:18,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:18,980 INFO L82 PathProgramCache]: Analyzing trace with hash 856912858, now seen corresponding path program 6 times [2021-06-05 03:38:18,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:18,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940719709] [2021-06-05 03:38:18,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:19,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:19,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940719709] [2021-06-05 03:38:19,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940719709] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:19,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:19,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:19,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912453749] [2021-06-05 03:38:19,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:19,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:19,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:19,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:19,082 INFO L87 Difference]: Start difference. First operand 593 states and 2006 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:19,145 INFO L93 Difference]: Finished difference Result 1196 states and 3811 transitions. [2021-06-05 03:38:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:19,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:19,151 INFO L225 Difference]: With dead ends: 1196 [2021-06-05 03:38:19,152 INFO L226 Difference]: Without dead ends: 1053 [2021-06-05 03:38:19,152 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:19,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2021-06-05 03:38:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 567. [2021-06-05 03:38:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 3.4240282685512367) internal successors, (1938), 566 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1938 transitions. [2021-06-05 03:38:19,177 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1938 transitions. Word has length 21 [2021-06-05 03:38:19,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:19,177 INFO L482 AbstractCegarLoop]: Abstraction has 567 states and 1938 transitions. [2021-06-05 03:38:19,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1938 transitions. [2021-06-05 03:38:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:19,180 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:19,180 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:19,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 03:38:19,181 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:19,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:19,181 INFO L82 PathProgramCache]: Analyzing trace with hash -179046054, now seen corresponding path program 7 times [2021-06-05 03:38:19,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:19,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997556203] [2021-06-05 03:38:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:19,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:19,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997556203] [2021-06-05 03:38:19,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997556203] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:19,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:19,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:19,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214506629] [2021-06-05 03:38:19,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:19,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:19,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:19,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:19,293 INFO L87 Difference]: Start difference. First operand 567 states and 1938 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:19,349 INFO L93 Difference]: Finished difference Result 1298 states and 4181 transitions. [2021-06-05 03:38:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:19,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:19,355 INFO L225 Difference]: With dead ends: 1298 [2021-06-05 03:38:19,355 INFO L226 Difference]: Without dead ends: 1164 [2021-06-05 03:38:19,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 86.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:19,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2021-06-05 03:38:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 623. [2021-06-05 03:38:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 3.3858520900321545) internal successors, (2106), 622 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 2106 transitions. [2021-06-05 03:38:19,382 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 2106 transitions. Word has length 21 [2021-06-05 03:38:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:19,382 INFO L482 AbstractCegarLoop]: Abstraction has 623 states and 2106 transitions. [2021-06-05 03:38:19,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 2106 transitions. [2021-06-05 03:38:19,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:19,384 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:19,384 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:19,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 03:38:19,385 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:19,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:19,385 INFO L82 PathProgramCache]: Analyzing trace with hash 872872346, now seen corresponding path program 8 times [2021-06-05 03:38:19,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:19,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043230811] [2021-06-05 03:38:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:19,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:19,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043230811] [2021-06-05 03:38:19,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043230811] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:19,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:19,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:19,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965409185] [2021-06-05 03:38:19,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:19,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:19,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:19,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:19,480 INFO L87 Difference]: Start difference. First operand 623 states and 2106 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:19,543 INFO L93 Difference]: Finished difference Result 1281 states and 4104 transitions. [2021-06-05 03:38:19,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:19,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:19,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:19,550 INFO L225 Difference]: With dead ends: 1281 [2021-06-05 03:38:19,550 INFO L226 Difference]: Without dead ends: 1129 [2021-06-05 03:38:19,550 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 97.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2021-06-05 03:38:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 588. [2021-06-05 03:38:19,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 3.4003407155025553) internal successors, (1996), 587 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1996 transitions. [2021-06-05 03:38:19,574 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1996 transitions. Word has length 21 [2021-06-05 03:38:19,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:19,574 INFO L482 AbstractCegarLoop]: Abstraction has 588 states and 1996 transitions. [2021-06-05 03:38:19,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,574 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1996 transitions. [2021-06-05 03:38:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:19,576 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:19,576 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:19,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 03:38:19,576 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:19,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:19,576 INFO L82 PathProgramCache]: Analyzing trace with hash 2136036634, now seen corresponding path program 9 times [2021-06-05 03:38:19,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:19,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455826390] [2021-06-05 03:38:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:19,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:19,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455826390] [2021-06-05 03:38:19,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455826390] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:19,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:19,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:19,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918275995] [2021-06-05 03:38:19,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:19,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:19,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:19,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:19,676 INFO L87 Difference]: Start difference. First operand 588 states and 1996 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:19,724 INFO L93 Difference]: Finished difference Result 1287 states and 4136 transitions. [2021-06-05 03:38:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:19,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:19,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:19,731 INFO L225 Difference]: With dead ends: 1287 [2021-06-05 03:38:19,731 INFO L226 Difference]: Without dead ends: 1153 [2021-06-05 03:38:19,731 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:19,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2021-06-05 03:38:19,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 614. [2021-06-05 03:38:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 3.3719412724306688) internal successors, (2067), 613 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 2067 transitions. [2021-06-05 03:38:19,755 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 2067 transitions. Word has length 21 [2021-06-05 03:38:19,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:19,755 INFO L482 AbstractCegarLoop]: Abstraction has 614 states and 2067 transitions. [2021-06-05 03:38:19,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 2067 transitions. [2021-06-05 03:38:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:19,757 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:19,757 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:19,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 03:38:19,758 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:19,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:19,758 INFO L82 PathProgramCache]: Analyzing trace with hash 929894012, now seen corresponding path program 10 times [2021-06-05 03:38:19,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:19,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299400187] [2021-06-05 03:38:19,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:19,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:19,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299400187] [2021-06-05 03:38:19,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299400187] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:19,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:19,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:19,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359715908] [2021-06-05 03:38:19,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:19,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:19,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:19,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:19,838 INFO L87 Difference]: Start difference. First operand 614 states and 2067 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:19,899 INFO L93 Difference]: Finished difference Result 1268 states and 4055 transitions. [2021-06-05 03:38:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:19,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:19,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:19,906 INFO L225 Difference]: With dead ends: 1268 [2021-06-05 03:38:19,906 INFO L226 Difference]: Without dead ends: 1127 [2021-06-05 03:38:19,906 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:19,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2021-06-05 03:38:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 588. [2021-06-05 03:38:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 3.3781942078364566) internal successors, (1983), 587 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1983 transitions. [2021-06-05 03:38:19,973 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1983 transitions. Word has length 21 [2021-06-05 03:38:19,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:19,973 INFO L482 AbstractCegarLoop]: Abstraction has 588 states and 1983 transitions. [2021-06-05 03:38:19,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1983 transitions. [2021-06-05 03:38:19,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:19,975 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:19,975 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:19,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 03:38:19,976 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:19,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:19,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1110176068, now seen corresponding path program 11 times [2021-06-05 03:38:19,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:19,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424309511] [2021-06-05 03:38:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:20,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:20,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424309511] [2021-06-05 03:38:20,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424309511] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:20,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:20,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:20,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323549936] [2021-06-05 03:38:20,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:20,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:20,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:20,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:20,086 INFO L87 Difference]: Start difference. First operand 588 states and 1983 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:20,167 INFO L93 Difference]: Finished difference Result 1245 states and 3995 transitions. [2021-06-05 03:38:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:20,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:20,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:20,174 INFO L225 Difference]: With dead ends: 1245 [2021-06-05 03:38:20,175 INFO L226 Difference]: Without dead ends: 1128 [2021-06-05 03:38:20,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 99.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:20,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-06-05 03:38:20,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 606. [2021-06-05 03:38:20,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 3.3619834710743803) internal successors, (2034), 605 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 2034 transitions. [2021-06-05 03:38:20,205 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 2034 transitions. Word has length 21 [2021-06-05 03:38:20,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:20,205 INFO L482 AbstractCegarLoop]: Abstraction has 606 states and 2034 transitions. [2021-06-05 03:38:20,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,205 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 2034 transitions. [2021-06-05 03:38:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:20,207 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:20,207 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:20,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 03:38:20,207 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:20,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:20,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1438558950, now seen corresponding path program 12 times [2021-06-05 03:38:20,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:20,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288706059] [2021-06-05 03:38:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:20,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:20,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288706059] [2021-06-05 03:38:20,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288706059] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:20,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:20,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:20,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118103719] [2021-06-05 03:38:20,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:20,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:20,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:20,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:20,311 INFO L87 Difference]: Start difference. First operand 606 states and 2034 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:20,389 INFO L93 Difference]: Finished difference Result 1243 states and 3972 transitions. [2021-06-05 03:38:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:20,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:20,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:20,406 INFO L225 Difference]: With dead ends: 1243 [2021-06-05 03:38:20,406 INFO L226 Difference]: Without dead ends: 1089 [2021-06-05 03:38:20,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 101.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:20,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2021-06-05 03:38:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 567. [2021-06-05 03:38:20,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 3.408127208480565) internal successors, (1929), 566 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1929 transitions. [2021-06-05 03:38:20,427 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1929 transitions. Word has length 21 [2021-06-05 03:38:20,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:20,427 INFO L482 AbstractCegarLoop]: Abstraction has 567 states and 1929 transitions. [2021-06-05 03:38:20,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,428 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1929 transitions. [2021-06-05 03:38:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:20,429 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:20,429 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:20,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 03:38:20,430 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:20,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1957163848, now seen corresponding path program 13 times [2021-06-05 03:38:20,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:20,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220001305] [2021-06-05 03:38:20,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:20,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:20,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220001305] [2021-06-05 03:38:20,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220001305] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:20,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:20,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:20,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389158875] [2021-06-05 03:38:20,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:20,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:20,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:20,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:20,517 INFO L87 Difference]: Start difference. First operand 567 states and 1929 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:20,575 INFO L93 Difference]: Finished difference Result 1192 states and 3820 transitions. [2021-06-05 03:38:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:20,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:20,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:20,580 INFO L225 Difference]: With dead ends: 1192 [2021-06-05 03:38:20,580 INFO L226 Difference]: Without dead ends: 1089 [2021-06-05 03:38:20,580 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2021-06-05 03:38:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 597. [2021-06-05 03:38:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 3.4060402684563758) internal successors, (2030), 596 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 2030 transitions. [2021-06-05 03:38:20,601 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 2030 transitions. Word has length 21 [2021-06-05 03:38:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:20,601 INFO L482 AbstractCegarLoop]: Abstraction has 597 states and 2030 transitions. [2021-06-05 03:38:20,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,601 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 2030 transitions. [2021-06-05 03:38:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:20,603 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:20,603 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:20,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 03:38:20,603 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:20,604 INFO L82 PathProgramCache]: Analyzing trace with hash 472376474, now seen corresponding path program 14 times [2021-06-05 03:38:20,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:20,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135833283] [2021-06-05 03:38:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:20,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:20,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135833283] [2021-06-05 03:38:20,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135833283] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:20,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:20,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:20,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140332911] [2021-06-05 03:38:20,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:20,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:20,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:20,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:20,689 INFO L87 Difference]: Start difference. First operand 597 states and 2030 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:20,748 INFO L93 Difference]: Finished difference Result 1223 states and 3907 transitions. [2021-06-05 03:38:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:20,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:20,751 INFO L225 Difference]: With dead ends: 1223 [2021-06-05 03:38:20,751 INFO L226 Difference]: Without dead ends: 1069 [2021-06-05 03:38:20,752 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-06-05 03:38:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 577. [2021-06-05 03:38:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 3.4027777777777777) internal successors, (1960), 576 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1960 transitions. [2021-06-05 03:38:20,772 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1960 transitions. Word has length 21 [2021-06-05 03:38:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:20,772 INFO L482 AbstractCegarLoop]: Abstraction has 577 states and 1960 transitions. [2021-06-05 03:38:20,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1960 transitions. [2021-06-05 03:38:20,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:20,774 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:20,774 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:20,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 03:38:20,774 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:20,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:20,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1419053670, now seen corresponding path program 15 times [2021-06-05 03:38:20,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:20,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352029428] [2021-06-05 03:38:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:20,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:20,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352029428] [2021-06-05 03:38:20,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352029428] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:20,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:20,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:20,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190895187] [2021-06-05 03:38:20,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:20,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:20,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:20,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:20,846 INFO L87 Difference]: Start difference. First operand 577 states and 1960 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:20,904 INFO L93 Difference]: Finished difference Result 1165 states and 3727 transitions. [2021-06-05 03:38:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:20,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:20,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:20,908 INFO L225 Difference]: With dead ends: 1165 [2021-06-05 03:38:20,908 INFO L226 Difference]: Without dead ends: 1062 [2021-06-05 03:38:20,909 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:20,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2021-06-05 03:38:20,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 589. [2021-06-05 03:38:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 3.3877551020408165) internal successors, (1992), 588 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 1992 transitions. [2021-06-05 03:38:20,928 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 1992 transitions. Word has length 21 [2021-06-05 03:38:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:20,928 INFO L482 AbstractCegarLoop]: Abstraction has 589 states and 1992 transitions. [2021-06-05 03:38:20,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 1992 transitions. [2021-06-05 03:38:20,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:20,930 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:20,930 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:20,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 03:38:20,930 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:20,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:20,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1264168858, now seen corresponding path program 16 times [2021-06-05 03:38:20,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:20,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466022107] [2021-06-05 03:38:20,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:21,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:21,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:21,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466022107] [2021-06-05 03:38:21,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466022107] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:21,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:21,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:21,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305092552] [2021-06-05 03:38:21,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:21,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:21,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:21,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:21,003 INFO L87 Difference]: Start difference. First operand 589 states and 1992 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:21,060 INFO L93 Difference]: Finished difference Result 1177 states and 3759 transitions. [2021-06-05 03:38:21,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:21,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:21,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:21,064 INFO L225 Difference]: With dead ends: 1177 [2021-06-05 03:38:21,064 INFO L226 Difference]: Without dead ends: 1050 [2021-06-05 03:38:21,064 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:21,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-06-05 03:38:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 577. [2021-06-05 03:38:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 3.392361111111111) internal successors, (1954), 576 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1954 transitions. [2021-06-05 03:38:21,084 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1954 transitions. Word has length 21 [2021-06-05 03:38:21,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:21,084 INFO L482 AbstractCegarLoop]: Abstraction has 577 states and 1954 transitions. [2021-06-05 03:38:21,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1954 transitions. [2021-06-05 03:38:21,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:21,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:21,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:21,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 03:38:21,086 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:21,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:21,087 INFO L82 PathProgramCache]: Analyzing trace with hash 947468028, now seen corresponding path program 17 times [2021-06-05 03:38:21,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:21,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130542831] [2021-06-05 03:38:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:21,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:21,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130542831] [2021-06-05 03:38:21,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130542831] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:21,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:21,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:21,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161228123] [2021-06-05 03:38:21,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:21,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:21,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:21,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:21,164 INFO L87 Difference]: Start difference. First operand 577 states and 1954 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:21,210 INFO L93 Difference]: Finished difference Result 1241 states and 3972 transitions. [2021-06-05 03:38:21,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:21,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:21,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:21,214 INFO L225 Difference]: With dead ends: 1241 [2021-06-05 03:38:21,214 INFO L226 Difference]: Without dead ends: 1107 [2021-06-05 03:38:21,214 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:21,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-06-05 03:38:21,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 603. [2021-06-05 03:38:21,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 3.3637873754152823) internal successors, (2025), 602 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 2025 transitions. [2021-06-05 03:38:21,234 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 2025 transitions. Word has length 21 [2021-06-05 03:38:21,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:21,234 INFO L482 AbstractCegarLoop]: Abstraction has 603 states and 2025 transitions. [2021-06-05 03:38:21,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,234 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 2025 transitions. [2021-06-05 03:38:21,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:21,236 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:21,236 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:21,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 03:38:21,236 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:21,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:21,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1035404762, now seen corresponding path program 18 times [2021-06-05 03:38:21,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:21,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573883587] [2021-06-05 03:38:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:21,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:21,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573883587] [2021-06-05 03:38:21,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573883587] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:21,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:21,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:21,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697290104] [2021-06-05 03:38:21,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:21,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:21,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:21,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:21,319 INFO L87 Difference]: Start difference. First operand 603 states and 2025 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:21,375 INFO L93 Difference]: Finished difference Result 1222 states and 3891 transitions. [2021-06-05 03:38:21,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:21,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:21,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:21,378 INFO L225 Difference]: With dead ends: 1222 [2021-06-05 03:38:21,378 INFO L226 Difference]: Without dead ends: 1071 [2021-06-05 03:38:21,379 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:21,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-06-05 03:38:21,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 567. [2021-06-05 03:38:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 3.3992932862190814) internal successors, (1924), 566 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1924 transitions. [2021-06-05 03:38:21,397 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1924 transitions. Word has length 21 [2021-06-05 03:38:21,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:21,398 INFO L482 AbstractCegarLoop]: Abstraction has 567 states and 1924 transitions. [2021-06-05 03:38:21,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,398 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1924 transitions. [2021-06-05 03:38:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:21,399 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:21,399 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:21,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 03:38:21,399 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:21,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:21,400 INFO L82 PathProgramCache]: Analyzing trace with hash 873653722, now seen corresponding path program 19 times [2021-06-05 03:38:21,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:21,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234915521] [2021-06-05 03:38:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:21,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:21,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234915521] [2021-06-05 03:38:21,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234915521] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:21,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:21,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:21,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989349980] [2021-06-05 03:38:21,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:21,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:21,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:21,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:21,471 INFO L87 Difference]: Start difference. First operand 567 states and 1924 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:21,536 INFO L93 Difference]: Finished difference Result 1130 states and 3615 transitions. [2021-06-05 03:38:21,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:21,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:21,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:21,539 INFO L225 Difference]: With dead ends: 1130 [2021-06-05 03:38:21,539 INFO L226 Difference]: Without dead ends: 1027 [2021-06-05 03:38:21,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:21,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2021-06-05 03:38:21,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 585. [2021-06-05 03:38:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 3.392123287671233) internal successors, (1981), 584 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1981 transitions. [2021-06-05 03:38:21,558 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1981 transitions. Word has length 21 [2021-06-05 03:38:21,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:21,558 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1981 transitions. [2021-06-05 03:38:21,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,558 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1981 transitions. [2021-06-05 03:38:21,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:21,559 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:21,559 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:21,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 03:38:21,560 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:21,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:21,560 INFO L82 PathProgramCache]: Analyzing trace with hash -59461670, now seen corresponding path program 20 times [2021-06-05 03:38:21,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:21,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153154532] [2021-06-05 03:38:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:21,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:21,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153154532] [2021-06-05 03:38:21,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153154532] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:21,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:21,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:21,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11862936] [2021-06-05 03:38:21,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:21,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:21,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:21,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:21,634 INFO L87 Difference]: Start difference. First operand 585 states and 1981 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:21,702 INFO L93 Difference]: Finished difference Result 1144 states and 3652 transitions. [2021-06-05 03:38:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:21,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:21,705 INFO L225 Difference]: With dead ends: 1144 [2021-06-05 03:38:21,705 INFO L226 Difference]: Without dead ends: 1015 [2021-06-05 03:38:21,705 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:21,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-06-05 03:38:21,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 573. [2021-06-05 03:38:21,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 3.3968531468531467) internal successors, (1943), 572 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1943 transitions. [2021-06-05 03:38:21,724 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1943 transitions. Word has length 21 [2021-06-05 03:38:21,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:21,724 INFO L482 AbstractCegarLoop]: Abstraction has 573 states and 1943 transitions. [2021-06-05 03:38:21,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,724 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1943 transitions. [2021-06-05 03:38:21,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:21,725 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:21,725 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:21,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 03:38:21,726 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:21,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:21,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1169683272, now seen corresponding path program 21 times [2021-06-05 03:38:21,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:21,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660965795] [2021-06-05 03:38:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:21,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:21,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660965795] [2021-06-05 03:38:21,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660965795] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:21,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:21,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:21,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896319530] [2021-06-05 03:38:21,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:21,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:21,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:21,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:21,800 INFO L87 Difference]: Start difference. First operand 573 states and 1943 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:21,854 INFO L93 Difference]: Finished difference Result 1128 states and 3604 transitions. [2021-06-05 03:38:21,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:21,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:21,858 INFO L225 Difference]: With dead ends: 1128 [2021-06-05 03:38:21,858 INFO L226 Difference]: Without dead ends: 1025 [2021-06-05 03:38:21,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2021-06-05 03:38:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 585. [2021-06-05 03:38:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 3.381849315068493) internal successors, (1975), 584 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1975 transitions. [2021-06-05 03:38:21,889 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1975 transitions. Word has length 21 [2021-06-05 03:38:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:21,889 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1975 transitions. [2021-06-05 03:38:21,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1975 transitions. [2021-06-05 03:38:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:21,890 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:21,890 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:21,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 03:38:21,891 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:21,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:21,891 INFO L82 PathProgramCache]: Analyzing trace with hash -65892390, now seen corresponding path program 22 times [2021-06-05 03:38:21,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:21,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442397869] [2021-06-05 03:38:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:21,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:21,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442397869] [2021-06-05 03:38:21,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442397869] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:21,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:21,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:21,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686452838] [2021-06-05 03:38:21,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:21,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:21,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:21,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:21,971 INFO L87 Difference]: Start difference. First operand 585 states and 1975 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:22,026 INFO L93 Difference]: Finished difference Result 1140 states and 3636 transitions. [2021-06-05 03:38:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:22,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:22,030 INFO L225 Difference]: With dead ends: 1140 [2021-06-05 03:38:22,030 INFO L226 Difference]: Without dead ends: 1013 [2021-06-05 03:38:22,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:22,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2021-06-05 03:38:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 573. [2021-06-05 03:38:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 3.3863636363636362) internal successors, (1937), 572 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1937 transitions. [2021-06-05 03:38:22,051 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1937 transitions. Word has length 21 [2021-06-05 03:38:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:22,051 INFO L482 AbstractCegarLoop]: Abstraction has 573 states and 1937 transitions. [2021-06-05 03:38:22,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,051 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1937 transitions. [2021-06-05 03:38:22,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:22,052 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:22,052 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:22,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 03:38:22,053 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:22,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1537010138, now seen corresponding path program 23 times [2021-06-05 03:38:22,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:22,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504047780] [2021-06-05 03:38:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:22,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:22,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504047780] [2021-06-05 03:38:22,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504047780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:22,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:22,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:22,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654101626] [2021-06-05 03:38:22,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:22,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:22,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:22,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:22,130 INFO L87 Difference]: Start difference. First operand 573 states and 1937 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:22,189 INFO L93 Difference]: Finished difference Result 1162 states and 3721 transitions. [2021-06-05 03:38:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:22,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:22,192 INFO L225 Difference]: With dead ends: 1162 [2021-06-05 03:38:22,193 INFO L226 Difference]: Without dead ends: 1045 [2021-06-05 03:38:22,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2021-06-05 03:38:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 591. [2021-06-05 03:38:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 3.369491525423729) internal successors, (1988), 590 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1988 transitions. [2021-06-05 03:38:22,214 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1988 transitions. Word has length 21 [2021-06-05 03:38:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:22,214 INFO L482 AbstractCegarLoop]: Abstraction has 591 states and 1988 transitions. [2021-06-05 03:38:22,214 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1988 transitions. [2021-06-05 03:38:22,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:22,215 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:22,215 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:22,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 03:38:22,216 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:22,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1208627256, now seen corresponding path program 24 times [2021-06-05 03:38:22,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:22,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751346809] [2021-06-05 03:38:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:22,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:22,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751346809] [2021-06-05 03:38:22,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751346809] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:22,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:22,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:22,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493997162] [2021-06-05 03:38:22,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:22,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:22,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:22,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:22,299 INFO L87 Difference]: Start difference. First operand 591 states and 1988 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:22,357 INFO L93 Difference]: Finished difference Result 1160 states and 3698 transitions. [2021-06-05 03:38:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:22,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:22,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:22,360 INFO L225 Difference]: With dead ends: 1160 [2021-06-05 03:38:22,360 INFO L226 Difference]: Without dead ends: 1010 [2021-06-05 03:38:22,360 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 89.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:22,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2021-06-05 03:38:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 556. [2021-06-05 03:38:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 3.427027027027027) internal successors, (1902), 555 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1902 transitions. [2021-06-05 03:38:22,379 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1902 transitions. Word has length 21 [2021-06-05 03:38:22,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:22,379 INFO L482 AbstractCegarLoop]: Abstraction has 556 states and 1902 transitions. [2021-06-05 03:38:22,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1902 transitions. [2021-06-05 03:38:22,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:22,381 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:22,381 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:22,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 03:38:22,381 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:22,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:22,381 INFO L82 PathProgramCache]: Analyzing trace with hash -281686468, now seen corresponding path program 25 times [2021-06-05 03:38:22,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:22,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305979749] [2021-06-05 03:38:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:22,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:22,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305979749] [2021-06-05 03:38:22,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305979749] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:22,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:22,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:22,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226165562] [2021-06-05 03:38:22,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:22,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:22,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:22,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:22,475 INFO L87 Difference]: Start difference. First operand 556 states and 1902 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:22,525 INFO L93 Difference]: Finished difference Result 1242 states and 3976 transitions. [2021-06-05 03:38:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:22,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:22,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:22,529 INFO L225 Difference]: With dead ends: 1242 [2021-06-05 03:38:22,529 INFO L226 Difference]: Without dead ends: 1108 [2021-06-05 03:38:22,530 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 87.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:22,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-06-05 03:38:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 591. [2021-06-05 03:38:22,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 3.3813559322033897) internal successors, (1995), 590 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1995 transitions. [2021-06-05 03:38:22,552 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1995 transitions. Word has length 21 [2021-06-05 03:38:22,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:22,552 INFO L482 AbstractCegarLoop]: Abstraction has 591 states and 1995 transitions. [2021-06-05 03:38:22,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1995 transitions. [2021-06-05 03:38:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:22,553 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:22,553 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:22,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 03:38:22,553 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:22,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:22,554 INFO L82 PathProgramCache]: Analyzing trace with hash 770231932, now seen corresponding path program 26 times [2021-06-05 03:38:22,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:22,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455448767] [2021-06-05 03:38:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:22,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:22,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455448767] [2021-06-05 03:38:22,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455448767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:22,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:22,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:22,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339537769] [2021-06-05 03:38:22,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:22,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:22,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:22,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:22,631 INFO L87 Difference]: Start difference. First operand 591 states and 1995 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:22,702 INFO L93 Difference]: Finished difference Result 1225 states and 3899 transitions. [2021-06-05 03:38:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:22,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:22,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:22,705 INFO L225 Difference]: With dead ends: 1225 [2021-06-05 03:38:22,705 INFO L226 Difference]: Without dead ends: 1073 [2021-06-05 03:38:22,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 88.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-06-05 03:38:22,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 556. [2021-06-05 03:38:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 3.4018018018018017) internal successors, (1888), 555 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1888 transitions. [2021-06-05 03:38:22,725 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1888 transitions. Word has length 21 [2021-06-05 03:38:22,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:22,725 INFO L482 AbstractCegarLoop]: Abstraction has 556 states and 1888 transitions. [2021-06-05 03:38:22,725 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,725 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1888 transitions. [2021-06-05 03:38:22,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:22,726 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:22,727 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:22,727 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 03:38:22,727 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:22,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:22,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1892039334, now seen corresponding path program 27 times [2021-06-05 03:38:22,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:22,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620616704] [2021-06-05 03:38:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:22,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:22,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620616704] [2021-06-05 03:38:22,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620616704] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:22,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:22,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:22,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230784260] [2021-06-05 03:38:22,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:22,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:22,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:22,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:22,815 INFO L87 Difference]: Start difference. First operand 556 states and 1888 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:22,880 INFO L93 Difference]: Finished difference Result 1182 states and 3766 transitions. [2021-06-05 03:38:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:22,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:22,883 INFO L225 Difference]: With dead ends: 1182 [2021-06-05 03:38:22,884 INFO L226 Difference]: Without dead ends: 1079 [2021-06-05 03:38:22,884 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:22,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-06-05 03:38:22,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 576. [2021-06-05 03:38:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 3.3878260869565215) internal successors, (1948), 575 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1948 transitions. [2021-06-05 03:38:22,904 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1948 transitions. Word has length 21 [2021-06-05 03:38:22,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:22,904 INFO L482 AbstractCegarLoop]: Abstraction has 576 states and 1948 transitions. [2021-06-05 03:38:22,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1948 transitions. [2021-06-05 03:38:22,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:22,905 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:22,905 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:22,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 03:38:22,905 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:22,906 INFO L82 PathProgramCache]: Analyzing trace with hash 537500988, now seen corresponding path program 28 times [2021-06-05 03:38:22,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:22,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957630067] [2021-06-05 03:38:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:22,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:22,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957630067] [2021-06-05 03:38:22,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957630067] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:22,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:22,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:22,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506720002] [2021-06-05 03:38:22,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:22,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:22,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:22,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:22,985 INFO L87 Difference]: Start difference. First operand 576 states and 1948 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:23,033 INFO L93 Difference]: Finished difference Result 1213 states and 3853 transitions. [2021-06-05 03:38:23,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:23,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:23,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:23,037 INFO L225 Difference]: With dead ends: 1213 [2021-06-05 03:38:23,037 INFO L226 Difference]: Without dead ends: 1059 [2021-06-05 03:38:23,037 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 74.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:23,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2021-06-05 03:38:23,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 556. [2021-06-05 03:38:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 3.383783783783784) internal successors, (1878), 555 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1878 transitions. [2021-06-05 03:38:23,056 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1878 transitions. Word has length 21 [2021-06-05 03:38:23,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:23,056 INFO L482 AbstractCegarLoop]: Abstraction has 556 states and 1878 transitions. [2021-06-05 03:38:23,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1878 transitions. [2021-06-05 03:38:23,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:23,058 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:23,058 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:23,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 03:38:23,058 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:23,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:23,058 INFO L82 PathProgramCache]: Analyzing trace with hash -315771494, now seen corresponding path program 29 times [2021-06-05 03:38:23,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:23,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557573495] [2021-06-05 03:38:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:23,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:23,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557573495] [2021-06-05 03:38:23,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557573495] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:23,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:23,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:23,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327855017] [2021-06-05 03:38:23,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:23,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:23,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:23,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:23,128 INFO L87 Difference]: Start difference. First operand 556 states and 1878 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:23,183 INFO L93 Difference]: Finished difference Result 1157 states and 3678 transitions. [2021-06-05 03:38:23,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:23,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:23,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:23,186 INFO L225 Difference]: With dead ends: 1157 [2021-06-05 03:38:23,186 INFO L226 Difference]: Without dead ends: 1054 [2021-06-05 03:38:23,187 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:23,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2021-06-05 03:38:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 568. [2021-06-05 03:38:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 3.368606701940035) internal successors, (1910), 567 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1910 transitions. [2021-06-05 03:38:23,205 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1910 transitions. Word has length 21 [2021-06-05 03:38:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:23,205 INFO L482 AbstractCegarLoop]: Abstraction has 568 states and 1910 transitions. [2021-06-05 03:38:23,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1910 transitions. [2021-06-05 03:38:23,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:23,206 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:23,206 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:23,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 03:38:23,207 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:23,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:23,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1248886886, now seen corresponding path program 30 times [2021-06-05 03:38:23,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:23,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438301567] [2021-06-05 03:38:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:23,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:23,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438301567] [2021-06-05 03:38:23,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438301567] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:23,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:23,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:23,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078632802] [2021-06-05 03:38:23,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:23,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:23,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:23,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:23,277 INFO L87 Difference]: Start difference. First operand 568 states and 1910 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:23,337 INFO L93 Difference]: Finished difference Result 1171 states and 3715 transitions. [2021-06-05 03:38:23,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:23,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:23,340 INFO L225 Difference]: With dead ends: 1171 [2021-06-05 03:38:23,340 INFO L226 Difference]: Without dead ends: 1028 [2021-06-05 03:38:23,341 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:23,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-06-05 03:38:23,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 542. [2021-06-05 03:38:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.406654343807763) internal successors, (1843), 541 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1843 transitions. [2021-06-05 03:38:23,357 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1843 transitions. Word has length 21 [2021-06-05 03:38:23,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:23,357 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1843 transitions. [2021-06-05 03:38:23,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,358 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1843 transitions. [2021-06-05 03:38:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:23,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:23,359 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:23,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 03:38:23,359 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:23,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:23,359 INFO L82 PathProgramCache]: Analyzing trace with hash 2039974810, now seen corresponding path program 31 times [2021-06-05 03:38:23,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:23,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665078351] [2021-06-05 03:38:23,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:23,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:23,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665078351] [2021-06-05 03:38:23,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665078351] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:23,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:23,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:23,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603277132] [2021-06-05 03:38:23,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:23,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:23,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:23,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:23,453 INFO L87 Difference]: Start difference. First operand 542 states and 1843 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:23,500 INFO L93 Difference]: Finished difference Result 1207 states and 3850 transitions. [2021-06-05 03:38:23,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:23,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:23,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:23,504 INFO L225 Difference]: With dead ends: 1207 [2021-06-05 03:38:23,504 INFO L226 Difference]: Without dead ends: 1073 [2021-06-05 03:38:23,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:23,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-06-05 03:38:23,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 591. [2021-06-05 03:38:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 3.371186440677966) internal successors, (1989), 590 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1989 transitions. [2021-06-05 03:38:23,526 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1989 transitions. Word has length 21 [2021-06-05 03:38:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:23,526 INFO L482 AbstractCegarLoop]: Abstraction has 591 states and 1989 transitions. [2021-06-05 03:38:23,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1989 transitions. [2021-06-05 03:38:23,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:23,527 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:23,527 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:23,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 03:38:23,527 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:23,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:23,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1203074086, now seen corresponding path program 32 times [2021-06-05 03:38:23,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:23,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307574330] [2021-06-05 03:38:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:23,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:23,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307574330] [2021-06-05 03:38:23,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307574330] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:23,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:23,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:23,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317285161] [2021-06-05 03:38:23,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:23,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:23,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:23,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:23,619 INFO L87 Difference]: Start difference. First operand 591 states and 1989 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:23,684 INFO L93 Difference]: Finished difference Result 1190 states and 3773 transitions. [2021-06-05 03:38:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:23,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:23,687 INFO L225 Difference]: With dead ends: 1190 [2021-06-05 03:38:23,688 INFO L226 Difference]: Without dead ends: 1038 [2021-06-05 03:38:23,688 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 103.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:23,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2021-06-05 03:38:23,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 556. [2021-06-05 03:38:23,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 3.390990990990991) internal successors, (1882), 555 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1882 transitions. [2021-06-05 03:38:23,707 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1882 transitions. Word has length 21 [2021-06-05 03:38:23,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:23,707 INFO L482 AbstractCegarLoop]: Abstraction has 556 states and 1882 transitions. [2021-06-05 03:38:23,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1882 transitions. [2021-06-05 03:38:23,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:23,708 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:23,708 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:23,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 03:38:23,709 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:23,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1641198536, now seen corresponding path program 1 times [2021-06-05 03:38:23,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:23,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114629715] [2021-06-05 03:38:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:23,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:23,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114629715] [2021-06-05 03:38:23,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114629715] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:23,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:23,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 03:38:23,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913567925] [2021-06-05 03:38:23,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 03:38:23,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:23,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 03:38:23,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:23,718 INFO L87 Difference]: Start difference. First operand 556 states and 1882 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:23,722 INFO L93 Difference]: Finished difference Result 473 states and 1551 transitions. [2021-06-05 03:38:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 03:38:23,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:23,723 INFO L225 Difference]: With dead ends: 473 [2021-06-05 03:38:23,723 INFO L226 Difference]: Without dead ends: 473 [2021-06-05 03:38:23,724 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 03:38:23,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-06-05 03:38:23,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2021-06-05 03:38:23,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 3.2860169491525424) internal successors, (1551), 472 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1551 transitions. [2021-06-05 03:38:23,736 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1551 transitions. Word has length 21 [2021-06-05 03:38:23,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:23,736 INFO L482 AbstractCegarLoop]: Abstraction has 473 states and 1551 transitions. [2021-06-05 03:38:23,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1551 transitions. [2021-06-05 03:38:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:23,737 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:23,737 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:23,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 03:38:23,737 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:23,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:23,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1800136862, now seen corresponding path program 33 times [2021-06-05 03:38:23,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:23,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785941230] [2021-06-05 03:38:23,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:23,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:23,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785941230] [2021-06-05 03:38:23,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785941230] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:23,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:23,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:23,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673953867] [2021-06-05 03:38:23,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:23,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:23,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:23,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:23,828 INFO L87 Difference]: Start difference. First operand 473 states and 1551 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:23,868 INFO L93 Difference]: Finished difference Result 940 states and 2857 transitions. [2021-06-05 03:38:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:23,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:23,872 INFO L225 Difference]: With dead ends: 940 [2021-06-05 03:38:23,872 INFO L226 Difference]: Without dead ends: 861 [2021-06-05 03:38:23,872 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:23,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-06-05 03:38:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 489. [2021-06-05 03:38:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 3.276639344262295) internal successors, (1599), 488 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1599 transitions. [2021-06-05 03:38:23,887 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1599 transitions. Word has length 21 [2021-06-05 03:38:23,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:23,887 INFO L482 AbstractCegarLoop]: Abstraction has 489 states and 1599 transitions. [2021-06-05 03:38:23,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:23,887 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1599 transitions. [2021-06-05 03:38:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:23,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:23,888 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:23,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 03:38:23,889 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:23,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:23,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1471753980, now seen corresponding path program 34 times [2021-06-05 03:38:23,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:23,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648504407] [2021-06-05 03:38:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:23,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:23,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648504407] [2021-06-05 03:38:23,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648504407] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:23,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:23,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:23,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838735147] [2021-06-05 03:38:23,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:23,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:23,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:23,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:23,975 INFO L87 Difference]: Start difference. First operand 489 states and 1599 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:24,020 INFO L93 Difference]: Finished difference Result 924 states and 2801 transitions. [2021-06-05 03:38:24,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:24,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:24,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:24,023 INFO L225 Difference]: With dead ends: 924 [2021-06-05 03:38:24,023 INFO L226 Difference]: Without dead ends: 798 [2021-06-05 03:38:24,023 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:24,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-06-05 03:38:24,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 473. [2021-06-05 03:38:24,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 3.2690677966101696) internal successors, (1543), 472 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1543 transitions. [2021-06-05 03:38:24,044 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1543 transitions. Word has length 21 [2021-06-05 03:38:24,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:24,044 INFO L482 AbstractCegarLoop]: Abstraction has 473 states and 1543 transitions. [2021-06-05 03:38:24,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,044 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1543 transitions. [2021-06-05 03:38:24,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:24,045 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:24,045 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:24,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 03:38:24,046 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:24,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:24,046 INFO L82 PathProgramCache]: Analyzing trace with hash -243200132, now seen corresponding path program 35 times [2021-06-05 03:38:24,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:24,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369978799] [2021-06-05 03:38:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:24,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:24,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369978799] [2021-06-05 03:38:24,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369978799] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:24,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:24,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:24,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925778714] [2021-06-05 03:38:24,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:24,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:24,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:24,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:24,140 INFO L87 Difference]: Start difference. First operand 473 states and 1543 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:24,183 INFO L93 Difference]: Finished difference Result 915 states and 2771 transitions. [2021-06-05 03:38:24,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:24,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:24,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:24,185 INFO L225 Difference]: With dead ends: 915 [2021-06-05 03:38:24,185 INFO L226 Difference]: Without dead ends: 836 [2021-06-05 03:38:24,185 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 88.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:24,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-06-05 03:38:24,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 481. [2021-06-05 03:38:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 3.25625) internal successors, (1563), 480 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1563 transitions. [2021-06-05 03:38:24,201 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1563 transitions. Word has length 21 [2021-06-05 03:38:24,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:24,201 INFO L482 AbstractCegarLoop]: Abstraction has 481 states and 1563 transitions. [2021-06-05 03:38:24,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,201 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1563 transitions. [2021-06-05 03:38:24,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:24,202 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:24,202 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:24,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 03:38:24,203 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:24,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:24,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1734695044, now seen corresponding path program 36 times [2021-06-05 03:38:24,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:24,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009378648] [2021-06-05 03:38:24,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:24,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:24,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009378648] [2021-06-05 03:38:24,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009378648] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:24,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:24,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:24,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944220014] [2021-06-05 03:38:24,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:24,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:24,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:24,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:24,287 INFO L87 Difference]: Start difference. First operand 481 states and 1563 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:24,344 INFO L93 Difference]: Finished difference Result 899 states and 2715 transitions. [2021-06-05 03:38:24,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:24,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:24,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:24,346 INFO L225 Difference]: With dead ends: 899 [2021-06-05 03:38:24,346 INFO L226 Difference]: Without dead ends: 786 [2021-06-05 03:38:24,346 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 97.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:24,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-06-05 03:38:24,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 461. [2021-06-05 03:38:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 3.2891304347826087) internal successors, (1513), 460 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1513 transitions. [2021-06-05 03:38:24,359 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1513 transitions. Word has length 21 [2021-06-05 03:38:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:24,359 INFO L482 AbstractCegarLoop]: Abstraction has 461 states and 1513 transitions. [2021-06-05 03:38:24,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,359 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1513 transitions. [2021-06-05 03:38:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:24,360 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:24,360 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:24,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 03:38:24,360 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:24,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:24,361 INFO L82 PathProgramCache]: Analyzing trace with hash 749113148, now seen corresponding path program 37 times [2021-06-05 03:38:24,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:24,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710341502] [2021-06-05 03:38:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:24,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:24,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:24,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710341502] [2021-06-05 03:38:24,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710341502] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:24,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:24,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:24,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913527437] [2021-06-05 03:38:24,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:24,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:24,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:24,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:24,438 INFO L87 Difference]: Start difference. First operand 461 states and 1513 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:24,501 INFO L93 Difference]: Finished difference Result 927 states and 2839 transitions. [2021-06-05 03:38:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:24,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:24,503 INFO L225 Difference]: With dead ends: 927 [2021-06-05 03:38:24,503 INFO L226 Difference]: Without dead ends: 840 [2021-06-05 03:38:24,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:24,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-06-05 03:38:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 477. [2021-06-05 03:38:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 3.28781512605042) internal successors, (1565), 476 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 1565 transitions. [2021-06-05 03:38:24,517 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 1565 transitions. Word has length 21 [2021-06-05 03:38:24,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:24,517 INFO L482 AbstractCegarLoop]: Abstraction has 477 states and 1565 transitions. [2021-06-05 03:38:24,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,518 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 1565 transitions. [2021-06-05 03:38:24,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:24,518 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:24,519 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:24,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 03:38:24,519 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:24,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:24,519 INFO L82 PathProgramCache]: Analyzing trace with hash 997222278, now seen corresponding path program 38 times [2021-06-05 03:38:24,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:24,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087356340] [2021-06-05 03:38:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:24,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:24,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087356340] [2021-06-05 03:38:24,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087356340] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:24,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:24,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:24,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561673744] [2021-06-05 03:38:24,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:24,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:24,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:24,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:24,604 INFO L87 Difference]: Start difference. First operand 477 states and 1565 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:24,647 INFO L93 Difference]: Finished difference Result 919 states and 2803 transitions. [2021-06-05 03:38:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:24,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:24,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:24,650 INFO L225 Difference]: With dead ends: 919 [2021-06-05 03:38:24,650 INFO L226 Difference]: Without dead ends: 832 [2021-06-05 03:38:24,650 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-06-05 03:38:24,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 469. [2021-06-05 03:38:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 3.2927350427350426) internal successors, (1541), 468 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1541 transitions. [2021-06-05 03:38:24,663 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1541 transitions. Word has length 21 [2021-06-05 03:38:24,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:24,664 INFO L482 AbstractCegarLoop]: Abstraction has 469 states and 1541 transitions. [2021-06-05 03:38:24,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,664 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1541 transitions. [2021-06-05 03:38:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:24,665 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:24,665 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:24,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 03:38:24,665 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:24,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1294223846, now seen corresponding path program 39 times [2021-06-05 03:38:24,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:24,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181066604] [2021-06-05 03:38:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:24,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:24,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181066604] [2021-06-05 03:38:24,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181066604] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:24,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:24,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:24,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767782648] [2021-06-05 03:38:24,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:24,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:24,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:24,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:24,769 INFO L87 Difference]: Start difference. First operand 469 states and 1541 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:24,822 INFO L93 Difference]: Finished difference Result 950 states and 2902 transitions. [2021-06-05 03:38:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:24,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:24,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:24,824 INFO L225 Difference]: With dead ends: 950 [2021-06-05 03:38:24,824 INFO L226 Difference]: Without dead ends: 863 [2021-06-05 03:38:24,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 116.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:24,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-06-05 03:38:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 489. [2021-06-05 03:38:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 3.2807377049180326) internal successors, (1601), 488 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1601 transitions. [2021-06-05 03:38:24,837 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1601 transitions. Word has length 21 [2021-06-05 03:38:24,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:24,837 INFO L482 AbstractCegarLoop]: Abstraction has 489 states and 1601 transitions. [2021-06-05 03:38:24,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,838 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1601 transitions. [2021-06-05 03:38:24,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:24,839 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:24,839 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:24,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 03:38:24,839 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:24,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2141739260, now seen corresponding path program 40 times [2021-06-05 03:38:24,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:24,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526010187] [2021-06-05 03:38:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:24,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:24,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526010187] [2021-06-05 03:38:24,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526010187] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:24,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:24,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:24,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086741956] [2021-06-05 03:38:24,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:24,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:24,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:24,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:24,923 INFO L87 Difference]: Start difference. First operand 489 states and 1601 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:24,962 INFO L93 Difference]: Finished difference Result 973 states and 2957 transitions. [2021-06-05 03:38:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:24,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:24,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:24,965 INFO L225 Difference]: With dead ends: 973 [2021-06-05 03:38:24,965 INFO L226 Difference]: Without dead ends: 843 [2021-06-05 03:38:24,965 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-06-05 03:38:24,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 469. [2021-06-05 03:38:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 3.2756410256410255) internal successors, (1533), 468 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1533 transitions. [2021-06-05 03:38:24,977 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1533 transitions. Word has length 21 [2021-06-05 03:38:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:24,977 INFO L482 AbstractCegarLoop]: Abstraction has 469 states and 1533 transitions. [2021-06-05 03:38:24,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1533 transitions. [2021-06-05 03:38:24,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:24,978 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:24,978 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:24,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 03:38:24,979 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:24,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:24,979 INFO L82 PathProgramCache]: Analyzing trace with hash 644082788, now seen corresponding path program 41 times [2021-06-05 03:38:24,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:24,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549643710] [2021-06-05 03:38:24,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:25,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:25,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549643710] [2021-06-05 03:38:25,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549643710] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:25,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:25,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:25,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268565731] [2021-06-05 03:38:25,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:25,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:25,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:25,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:25,067 INFO L87 Difference]: Start difference. First operand 469 states and 1533 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:25,105 INFO L93 Difference]: Finished difference Result 930 states and 2822 transitions. [2021-06-05 03:38:25,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:25,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:25,107 INFO L225 Difference]: With dead ends: 930 [2021-06-05 03:38:25,108 INFO L226 Difference]: Without dead ends: 851 [2021-06-05 03:38:25,108 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2021-06-05 03:38:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 485. [2021-06-05 03:38:25,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 3.2665289256198347) internal successors, (1581), 484 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1581 transitions. [2021-06-05 03:38:25,121 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1581 transitions. Word has length 21 [2021-06-05 03:38:25,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:25,121 INFO L482 AbstractCegarLoop]: Abstraction has 485 states and 1581 transitions. [2021-06-05 03:38:25,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,121 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1581 transitions. [2021-06-05 03:38:25,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:25,122 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:25,122 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:25,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 03:38:25,122 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:25,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:25,123 INFO L82 PathProgramCache]: Analyzing trace with hash -945851962, now seen corresponding path program 42 times [2021-06-05 03:38:25,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:25,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733363238] [2021-06-05 03:38:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:25,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:25,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733363238] [2021-06-05 03:38:25,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733363238] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:25,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:25,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:25,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094752043] [2021-06-05 03:38:25,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:25,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:25,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:25,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:25,204 INFO L87 Difference]: Start difference. First operand 485 states and 1581 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:25,247 INFO L93 Difference]: Finished difference Result 914 states and 2766 transitions. [2021-06-05 03:38:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:25,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:25,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:25,249 INFO L225 Difference]: With dead ends: 914 [2021-06-05 03:38:25,249 INFO L226 Difference]: Without dead ends: 780 [2021-06-05 03:38:25,250 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 79.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:25,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-06-05 03:38:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 461. [2021-06-05 03:38:25,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 3.2804347826086957) internal successors, (1509), 460 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1509 transitions. [2021-06-05 03:38:25,261 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1509 transitions. Word has length 21 [2021-06-05 03:38:25,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:25,261 INFO L482 AbstractCegarLoop]: Abstraction has 461 states and 1509 transitions. [2021-06-05 03:38:25,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1509 transitions. [2021-06-05 03:38:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:25,263 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:25,263 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:25,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 03:38:25,263 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:25,263 INFO L82 PathProgramCache]: Analyzing trace with hash -97683814, now seen corresponding path program 43 times [2021-06-05 03:38:25,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:25,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000234584] [2021-06-05 03:38:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:25,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:25,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000234584] [2021-06-05 03:38:25,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000234584] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:25,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:25,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:25,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487124743] [2021-06-05 03:38:25,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:25,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:25,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:25,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:25,334 INFO L87 Difference]: Start difference. First operand 461 states and 1509 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:25,384 INFO L93 Difference]: Finished difference Result 890 states and 2713 transitions. [2021-06-05 03:38:25,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:25,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:25,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:25,386 INFO L225 Difference]: With dead ends: 890 [2021-06-05 03:38:25,386 INFO L226 Difference]: Without dead ends: 803 [2021-06-05 03:38:25,386 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:25,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-06-05 03:38:25,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 473. [2021-06-05 03:38:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 3.2733050847457625) internal successors, (1545), 472 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1545 transitions. [2021-06-05 03:38:25,398 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1545 transitions. Word has length 21 [2021-06-05 03:38:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:25,398 INFO L482 AbstractCegarLoop]: Abstraction has 473 states and 1545 transitions. [2021-06-05 03:38:25,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,398 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1545 transitions. [2021-06-05 03:38:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:25,399 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:25,399 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:25,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 03:38:25,399 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:25,400 INFO L82 PathProgramCache]: Analyzing trace with hash 150425316, now seen corresponding path program 44 times [2021-06-05 03:38:25,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:25,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639665916] [2021-06-05 03:38:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:25,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:25,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639665916] [2021-06-05 03:38:25,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639665916] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:25,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:25,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:25,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364125980] [2021-06-05 03:38:25,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:25,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:25,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:25,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:25,469 INFO L87 Difference]: Start difference. First operand 473 states and 1545 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:25,508 INFO L93 Difference]: Finished difference Result 882 states and 2677 transitions. [2021-06-05 03:38:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:25,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:25,511 INFO L225 Difference]: With dead ends: 882 [2021-06-05 03:38:25,511 INFO L226 Difference]: Without dead ends: 795 [2021-06-05 03:38:25,511 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 67.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:25,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-06-05 03:38:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 465. [2021-06-05 03:38:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 3.2780172413793105) internal successors, (1521), 464 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1521 transitions. [2021-06-05 03:38:25,522 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1521 transitions. Word has length 21 [2021-06-05 03:38:25,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:25,523 INFO L482 AbstractCegarLoop]: Abstraction has 465 states and 1521 transitions. [2021-06-05 03:38:25,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,523 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1521 transitions. [2021-06-05 03:38:25,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:25,524 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:25,524 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:25,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 03:38:25,524 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:25,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:25,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1094782618, now seen corresponding path program 45 times [2021-06-05 03:38:25,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:25,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293472509] [2021-06-05 03:38:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:25,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:25,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293472509] [2021-06-05 03:38:25,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293472509] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:25,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:25,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:25,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710227675] [2021-06-05 03:38:25,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:25,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:25,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:25,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:25,589 INFO L87 Difference]: Start difference. First operand 465 states and 1521 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:25,639 INFO L93 Difference]: Finished difference Result 896 states and 2726 transitions. [2021-06-05 03:38:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:25,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:25,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:25,641 INFO L225 Difference]: With dead ends: 896 [2021-06-05 03:38:25,642 INFO L226 Difference]: Without dead ends: 809 [2021-06-05 03:38:25,642 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:25,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2021-06-05 03:38:25,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 477. [2021-06-05 03:38:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 3.2626050420168067) internal successors, (1553), 476 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 1553 transitions. [2021-06-05 03:38:25,653 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 1553 transitions. Word has length 21 [2021-06-05 03:38:25,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:25,654 INFO L482 AbstractCegarLoop]: Abstraction has 477 states and 1553 transitions. [2021-06-05 03:38:25,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 1553 transitions. [2021-06-05 03:38:25,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:25,655 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:25,655 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:25,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 03:38:25,655 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:25,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:25,655 INFO L82 PathProgramCache]: Analyzing trace with hash -421844740, now seen corresponding path program 46 times [2021-06-05 03:38:25,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:25,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420647803] [2021-06-05 03:38:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:25,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:25,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420647803] [2021-06-05 03:38:25,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420647803] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:25,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:25,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:25,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556290034] [2021-06-05 03:38:25,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:25,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:25,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:25,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:25,721 INFO L87 Difference]: Start difference. First operand 477 states and 1553 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:25,778 INFO L93 Difference]: Finished difference Result 902 states and 2731 transitions. [2021-06-05 03:38:25,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:25,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:25,780 INFO L225 Difference]: With dead ends: 902 [2021-06-05 03:38:25,780 INFO L226 Difference]: Without dead ends: 797 [2021-06-05 03:38:25,780 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:25,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-06-05 03:38:25,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 465. [2021-06-05 03:38:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 3.269396551724138) internal successors, (1517), 464 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1517 transitions. [2021-06-05 03:38:25,792 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1517 transitions. Word has length 21 [2021-06-05 03:38:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:25,792 INFO L482 AbstractCegarLoop]: Abstraction has 465 states and 1517 transitions. [2021-06-05 03:38:25,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1517 transitions. [2021-06-05 03:38:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:25,793 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:25,793 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:25,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 03:38:25,793 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:25,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:25,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1261878044, now seen corresponding path program 47 times [2021-06-05 03:38:25,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:25,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991683528] [2021-06-05 03:38:25,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:25,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:25,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991683528] [2021-06-05 03:38:25,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991683528] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:25,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:25,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:25,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942316698] [2021-06-05 03:38:25,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:25,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:25,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:25,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:25,868 INFO L87 Difference]: Start difference. First operand 465 states and 1517 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:25,917 INFO L93 Difference]: Finished difference Result 876 states and 2650 transitions. [2021-06-05 03:38:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:25,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:25,919 INFO L225 Difference]: With dead ends: 876 [2021-06-05 03:38:25,919 INFO L226 Difference]: Without dead ends: 797 [2021-06-05 03:38:25,920 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 74.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:25,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-06-05 03:38:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 473. [2021-06-05 03:38:25,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 3.2563559322033897) internal successors, (1537), 472 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1537 transitions. [2021-06-05 03:38:25,931 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 1537 transitions. Word has length 21 [2021-06-05 03:38:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:25,931 INFO L482 AbstractCegarLoop]: Abstraction has 473 states and 1537 transitions. [2021-06-05 03:38:25,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 1537 transitions. [2021-06-05 03:38:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:25,932 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:25,932 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:25,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 03:38:25,932 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:25,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1464160710, now seen corresponding path program 48 times [2021-06-05 03:38:25,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:25,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408014699] [2021-06-05 03:38:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:26,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:26,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408014699] [2021-06-05 03:38:26,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408014699] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:26,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:26,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:26,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000592273] [2021-06-05 03:38:26,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:26,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:26,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:26,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:26,006 INFO L87 Difference]: Start difference. First operand 473 states and 1537 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:26,060 INFO L93 Difference]: Finished difference Result 860 states and 2594 transitions. [2021-06-05 03:38:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:26,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:26,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:26,062 INFO L225 Difference]: With dead ends: 860 [2021-06-05 03:38:26,062 INFO L226 Difference]: Without dead ends: 749 [2021-06-05 03:38:26,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 88.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-06-05 03:38:26,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 455. [2021-06-05 03:38:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 3.297356828193833) internal successors, (1497), 454 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1497 transitions. [2021-06-05 03:38:26,073 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1497 transitions. Word has length 21 [2021-06-05 03:38:26,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:26,073 INFO L482 AbstractCegarLoop]: Abstraction has 455 states and 1497 transitions. [2021-06-05 03:38:26,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,074 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1497 transitions. [2021-06-05 03:38:26,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:26,074 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:26,075 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:26,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 03:38:26,075 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:26,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:26,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1149207288, now seen corresponding path program 49 times [2021-06-05 03:38:26,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:26,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791490003] [2021-06-05 03:38:26,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:26,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:26,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791490003] [2021-06-05 03:38:26,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791490003] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:26,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:26,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:26,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870612244] [2021-06-05 03:38:26,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:26,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:26,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:26,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:26,150 INFO L87 Difference]: Start difference. First operand 455 states and 1497 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:26,190 INFO L93 Difference]: Finished difference Result 982 states and 2989 transitions. [2021-06-05 03:38:26,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:26,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:26,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:26,193 INFO L225 Difference]: With dead ends: 982 [2021-06-05 03:38:26,193 INFO L226 Difference]: Without dead ends: 872 [2021-06-05 03:38:26,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 74.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:26,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-06-05 03:38:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 486. [2021-06-05 03:38:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 3.2494845360824742) internal successors, (1576), 485 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1576 transitions. [2021-06-05 03:38:26,206 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1576 transitions. Word has length 21 [2021-06-05 03:38:26,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:26,206 INFO L482 AbstractCegarLoop]: Abstraction has 486 states and 1576 transitions. [2021-06-05 03:38:26,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1576 transitions. [2021-06-05 03:38:26,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:26,207 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:26,207 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:26,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-05 03:38:26,207 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:26,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:26,207 INFO L82 PathProgramCache]: Analyzing trace with hash -2093841608, now seen corresponding path program 50 times [2021-06-05 03:38:26,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:26,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268509008] [2021-06-05 03:38:26,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:26,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:26,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268509008] [2021-06-05 03:38:26,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268509008] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:26,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:26,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:26,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322067584] [2021-06-05 03:38:26,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:26,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:26,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:26,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:26,284 INFO L87 Difference]: Start difference. First operand 486 states and 1576 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:26,341 INFO L93 Difference]: Finished difference Result 965 states and 2916 transitions. [2021-06-05 03:38:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:26,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:26,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:26,344 INFO L225 Difference]: With dead ends: 965 [2021-06-05 03:38:26,344 INFO L226 Difference]: Without dead ends: 841 [2021-06-05 03:38:26,344 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 92.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:26,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-06-05 03:38:26,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 455. [2021-06-05 03:38:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 3.2709251101321586) internal successors, (1485), 454 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1485 transitions. [2021-06-05 03:38:26,356 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1485 transitions. Word has length 21 [2021-06-05 03:38:26,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:26,356 INFO L482 AbstractCegarLoop]: Abstraction has 455 states and 1485 transitions. [2021-06-05 03:38:26,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,357 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1485 transitions. [2021-06-05 03:38:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:26,357 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:26,357 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:26,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-05 03:38:26,358 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:26,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:26,358 INFO L82 PathProgramCache]: Analyzing trace with hash 909369340, now seen corresponding path program 51 times [2021-06-05 03:38:26,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:26,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499246242] [2021-06-05 03:38:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:26,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:26,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499246242] [2021-06-05 03:38:26,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499246242] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:26,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:26,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:26,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815982650] [2021-06-05 03:38:26,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:26,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:26,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:26,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:26,447 INFO L87 Difference]: Start difference. First operand 455 states and 1485 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:26,488 INFO L93 Difference]: Finished difference Result 922 states and 2791 transitions. [2021-06-05 03:38:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:26,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:26,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:26,490 INFO L225 Difference]: With dead ends: 922 [2021-06-05 03:38:26,490 INFO L226 Difference]: Without dead ends: 843 [2021-06-05 03:38:26,490 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 86.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:26,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-06-05 03:38:26,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 471. [2021-06-05 03:38:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 3.2617021276595746) internal successors, (1533), 470 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 1533 transitions. [2021-06-05 03:38:26,502 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 1533 transitions. Word has length 21 [2021-06-05 03:38:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:26,502 INFO L482 AbstractCegarLoop]: Abstraction has 471 states and 1533 transitions. [2021-06-05 03:38:26,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 1533 transitions. [2021-06-05 03:38:26,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:26,503 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:26,503 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:26,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-05 03:38:26,503 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:26,504 INFO L82 PathProgramCache]: Analyzing trace with hash 580986458, now seen corresponding path program 52 times [2021-06-05 03:38:26,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:26,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137476797] [2021-06-05 03:38:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:26,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:26,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:26,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137476797] [2021-06-05 03:38:26,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137476797] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:26,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:26,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:26,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404808219] [2021-06-05 03:38:26,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:26,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:26,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:26,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:26,585 INFO L87 Difference]: Start difference. First operand 471 states and 1533 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:26,624 INFO L93 Difference]: Finished difference Result 953 states and 2878 transitions. [2021-06-05 03:38:26,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:26,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:26,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:26,626 INFO L225 Difference]: With dead ends: 953 [2021-06-05 03:38:26,626 INFO L226 Difference]: Without dead ends: 827 [2021-06-05 03:38:26,627 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:26,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-06-05 03:38:26,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 455. [2021-06-05 03:38:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 3.253303964757709) internal successors, (1477), 454 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1477 transitions. [2021-06-05 03:38:26,640 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1477 transitions. Word has length 21 [2021-06-05 03:38:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:26,640 INFO L482 AbstractCegarLoop]: Abstraction has 455 states and 1477 transitions. [2021-06-05 03:38:26,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1477 transitions. [2021-06-05 03:38:26,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:26,641 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:26,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:26,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-05 03:38:26,642 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:26,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:26,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1133967654, now seen corresponding path program 53 times [2021-06-05 03:38:26,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:26,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251982605] [2021-06-05 03:38:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:26,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:26,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251982605] [2021-06-05 03:38:26,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251982605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:26,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:26,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:26,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095078816] [2021-06-05 03:38:26,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:26,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:26,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:26,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:26,734 INFO L87 Difference]: Start difference. First operand 455 states and 1477 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:26,777 INFO L93 Difference]: Finished difference Result 897 states and 2705 transitions. [2021-06-05 03:38:26,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:26,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:26,780 INFO L225 Difference]: With dead ends: 897 [2021-06-05 03:38:26,780 INFO L226 Difference]: Without dead ends: 818 [2021-06-05 03:38:26,780 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 89.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:26,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2021-06-05 03:38:26,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 463. [2021-06-05 03:38:26,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 3.24025974025974) internal successors, (1497), 462 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1497 transitions. [2021-06-05 03:38:26,793 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1497 transitions. Word has length 21 [2021-06-05 03:38:26,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:26,793 INFO L482 AbstractCegarLoop]: Abstraction has 463 states and 1497 transitions. [2021-06-05 03:38:26,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,793 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1497 transitions. [2021-06-05 03:38:26,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:26,794 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:26,794 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:26,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-05 03:38:26,794 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:26,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:26,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1669504730, now seen corresponding path program 54 times [2021-06-05 03:38:26,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:26,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253374726] [2021-06-05 03:38:26,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:26,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:26,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253374726] [2021-06-05 03:38:26,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253374726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:26,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:26,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:26,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41786022] [2021-06-05 03:38:26,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:26,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:26,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:26,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:26,884 INFO L87 Difference]: Start difference. First operand 463 states and 1497 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:26,946 INFO L93 Difference]: Finished difference Result 911 states and 2742 transitions. [2021-06-05 03:38:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:26,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:26,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:26,949 INFO L225 Difference]: With dead ends: 911 [2021-06-05 03:38:26,949 INFO L226 Difference]: Without dead ends: 798 [2021-06-05 03:38:26,949 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 106.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-06-05 03:38:26,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 443. [2021-06-05 03:38:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 3.273755656108597) internal successors, (1447), 442 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1447 transitions. [2021-06-05 03:38:26,961 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1447 transitions. Word has length 21 [2021-06-05 03:38:26,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:26,961 INFO L482 AbstractCegarLoop]: Abstraction has 443 states and 1447 transitions. [2021-06-05 03:38:26,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:26,961 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1447 transitions. [2021-06-05 03:38:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:26,962 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:26,962 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:26,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 03:38:26,962 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:26,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:26,963 INFO L82 PathProgramCache]: Analyzing trace with hash -2053126694, now seen corresponding path program 55 times [2021-06-05 03:38:26,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:26,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402873961] [2021-06-05 03:38:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:27,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:27,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402873961] [2021-06-05 03:38:27,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402873961] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:27,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:27,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:27,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361026327] [2021-06-05 03:38:27,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:27,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:27,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:27,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:27,034 INFO L87 Difference]: Start difference. First operand 443 states and 1447 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:27,079 INFO L93 Difference]: Finished difference Result 963 states and 2923 transitions. [2021-06-05 03:38:27,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:27,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:27,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:27,081 INFO L225 Difference]: With dead ends: 963 [2021-06-05 03:38:27,081 INFO L226 Difference]: Without dead ends: 853 [2021-06-05 03:38:27,082 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 70.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-06-05 03:38:27,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 443. [2021-06-05 03:38:27,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 3.2217194570135748) internal successors, (1424), 442 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1424 transitions. [2021-06-05 03:38:27,094 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1424 transitions. Word has length 21 [2021-06-05 03:38:27,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:27,094 INFO L482 AbstractCegarLoop]: Abstraction has 443 states and 1424 transitions. [2021-06-05 03:38:27,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1424 transitions. [2021-06-05 03:38:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:27,095 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:27,095 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:27,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 03:38:27,095 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:27,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:27,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1001208294, now seen corresponding path program 56 times [2021-06-05 03:38:27,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:27,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146976249] [2021-06-05 03:38:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:27,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:27,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146976249] [2021-06-05 03:38:27,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146976249] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:27,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:27,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:27,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276595164] [2021-06-05 03:38:27,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:27,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:27,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:27,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:27,196 INFO L87 Difference]: Start difference. First operand 443 states and 1424 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:27,256 INFO L93 Difference]: Finished difference Result 946 states and 2850 transitions. [2021-06-05 03:38:27,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:27,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:27,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:27,258 INFO L225 Difference]: With dead ends: 946 [2021-06-05 03:38:27,258 INFO L226 Difference]: Without dead ends: 822 [2021-06-05 03:38:27,259 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:27,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-06-05 03:38:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 412. [2021-06-05 03:38:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 3.236009732360097) internal successors, (1330), 411 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1330 transitions. [2021-06-05 03:38:27,269 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1330 transitions. Word has length 21 [2021-06-05 03:38:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:27,270 INFO L482 AbstractCegarLoop]: Abstraction has 412 states and 1330 transitions. [2021-06-05 03:38:27,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,270 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1330 transitions. [2021-06-05 03:38:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:27,271 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:27,271 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:27,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 03:38:27,271 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:27,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:27,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1785983304, now seen corresponding path program 57 times [2021-06-05 03:38:27,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:27,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539470240] [2021-06-05 03:38:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:27,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:27,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539470240] [2021-06-05 03:38:27,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539470240] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:27,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:27,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:27,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626904569] [2021-06-05 03:38:27,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:27,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:27,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:27,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:27,340 INFO L87 Difference]: Start difference. First operand 412 states and 1330 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:27,381 INFO L93 Difference]: Finished difference Result 905 states and 2737 transitions. [2021-06-05 03:38:27,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:27,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:27,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:27,383 INFO L225 Difference]: With dead ends: 905 [2021-06-05 03:38:27,383 INFO L226 Difference]: Without dead ends: 795 [2021-06-05 03:38:27,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:27,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-06-05 03:38:27,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 434. [2021-06-05 03:38:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 3.203233256351039) internal successors, (1387), 433 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1387 transitions. [2021-06-05 03:38:27,394 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1387 transitions. Word has length 21 [2021-06-05 03:38:27,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:27,394 INFO L482 AbstractCegarLoop]: Abstraction has 434 states and 1387 transitions. [2021-06-05 03:38:27,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1387 transitions. [2021-06-05 03:38:27,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:27,395 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:27,395 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:27,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 03:38:27,396 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:27,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:27,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1302841370, now seen corresponding path program 58 times [2021-06-05 03:38:27,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:27,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733185285] [2021-06-05 03:38:27,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:27,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:27,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733185285] [2021-06-05 03:38:27,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733185285] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:27,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:27,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:27,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936828403] [2021-06-05 03:38:27,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:27,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:27,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:27,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:27,463 INFO L87 Difference]: Start difference. First operand 434 states and 1387 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:27,518 INFO L93 Difference]: Finished difference Result 822 states and 2499 transitions. [2021-06-05 03:38:27,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:27,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:27,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:27,520 INFO L225 Difference]: With dead ends: 822 [2021-06-05 03:38:27,520 INFO L226 Difference]: Without dead ends: 709 [2021-06-05 03:38:27,520 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2021-06-05 03:38:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 412. [2021-06-05 03:38:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 3.2092457420924574) internal successors, (1319), 411 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1319 transitions. [2021-06-05 03:38:27,530 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1319 transitions. Word has length 21 [2021-06-05 03:38:27,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:27,530 INFO L482 AbstractCegarLoop]: Abstraction has 412 states and 1319 transitions. [2021-06-05 03:38:27,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,530 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1319 transitions. [2021-06-05 03:38:27,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:27,531 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:27,531 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:27,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 03:38:27,531 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:27,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:27,532 INFO L82 PathProgramCache]: Analyzing trace with hash -737228710, now seen corresponding path program 59 times [2021-06-05 03:38:27,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:27,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358742631] [2021-06-05 03:38:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:27,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:27,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358742631] [2021-06-05 03:38:27,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358742631] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:27,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:27,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:27,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933360082] [2021-06-05 03:38:27,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:27,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:27,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:27,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:27,601 INFO L87 Difference]: Start difference. First operand 412 states and 1319 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:27,657 INFO L93 Difference]: Finished difference Result 880 states and 2648 transitions. [2021-06-05 03:38:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:27,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:27,659 INFO L225 Difference]: With dead ends: 880 [2021-06-05 03:38:27,659 INFO L226 Difference]: Without dead ends: 787 [2021-06-05 03:38:27,659 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 86.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:27,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-06-05 03:38:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 426. [2021-06-05 03:38:27,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 3.1905882352941175) internal successors, (1356), 425 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1356 transitions. [2021-06-05 03:38:27,669 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1356 transitions. Word has length 21 [2021-06-05 03:38:27,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:27,669 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1356 transitions. [2021-06-05 03:38:27,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1356 transitions. [2021-06-05 03:38:27,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:27,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:27,670 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:27,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 03:38:27,671 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1065611592, now seen corresponding path program 60 times [2021-06-05 03:38:27,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:27,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449454887] [2021-06-05 03:38:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:27,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:27,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449454887] [2021-06-05 03:38:27,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449454887] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:27,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:27,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:27,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126705669] [2021-06-05 03:38:27,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:27,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:27,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:27,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:27,746 INFO L87 Difference]: Start difference. First operand 426 states and 1356 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:27,798 INFO L93 Difference]: Finished difference Result 814 states and 2468 transitions. [2021-06-05 03:38:27,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:27,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:27,800 INFO L225 Difference]: With dead ends: 814 [2021-06-05 03:38:27,800 INFO L226 Difference]: Without dead ends: 690 [2021-06-05 03:38:27,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:27,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-06-05 03:38:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 393. [2021-06-05 03:38:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.2448979591836733) internal successors, (1272), 392 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1272 transitions. [2021-06-05 03:38:27,813 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1272 transitions. Word has length 21 [2021-06-05 03:38:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:27,813 INFO L482 AbstractCegarLoop]: Abstraction has 393 states and 1272 transitions. [2021-06-05 03:38:27,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1272 transitions. [2021-06-05 03:38:27,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:27,814 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:27,814 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:27,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 03:38:27,814 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:27,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:27,815 INFO L82 PathProgramCache]: Analyzing trace with hash 910773180, now seen corresponding path program 61 times [2021-06-05 03:38:27,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:27,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883034085] [2021-06-05 03:38:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:27,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:27,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883034085] [2021-06-05 03:38:27,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883034085] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:27,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:27,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:27,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352692223] [2021-06-05 03:38:27,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:27,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:27,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:27,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:27,890 INFO L87 Difference]: Start difference. First operand 393 states and 1272 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:27,930 INFO L93 Difference]: Finished difference Result 825 states and 2485 transitions. [2021-06-05 03:38:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:27,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:27,932 INFO L225 Difference]: With dead ends: 825 [2021-06-05 03:38:27,932 INFO L226 Difference]: Without dead ends: 746 [2021-06-05 03:38:27,932 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 76.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-06-05 03:38:27,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 417. [2021-06-05 03:38:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 3.25) internal successors, (1352), 416 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1352 transitions. [2021-06-05 03:38:27,943 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1352 transitions. Word has length 21 [2021-06-05 03:38:27,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:27,943 INFO L482 AbstractCegarLoop]: Abstraction has 417 states and 1352 transitions. [2021-06-05 03:38:27,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:27,944 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1352 transitions. [2021-06-05 03:38:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:27,945 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:27,945 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:27,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 03:38:27,945 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:27,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:27,945 INFO L82 PathProgramCache]: Analyzing trace with hash 582390298, now seen corresponding path program 62 times [2021-06-05 03:38:27,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:27,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058099218] [2021-06-05 03:38:27,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:28,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:28,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058099218] [2021-06-05 03:38:28,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058099218] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:28,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:28,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:28,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248831339] [2021-06-05 03:38:28,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:28,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:28,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:28,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:28,027 INFO L87 Difference]: Start difference. First operand 417 states and 1352 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:28,074 INFO L93 Difference]: Finished difference Result 856 states and 2572 transitions. [2021-06-05 03:38:28,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:28,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:28,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:28,076 INFO L225 Difference]: With dead ends: 856 [2021-06-05 03:38:28,076 INFO L226 Difference]: Without dead ends: 730 [2021-06-05 03:38:28,076 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:28,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2021-06-05 03:38:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 401. [2021-06-05 03:38:28,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.24) internal successors, (1296), 400 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1296 transitions. [2021-06-05 03:38:28,087 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1296 transitions. Word has length 21 [2021-06-05 03:38:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:28,087 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 1296 transitions. [2021-06-05 03:38:28,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1296 transitions. [2021-06-05 03:38:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:28,088 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:28,088 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:28,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 03:38:28,088 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:28,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:28,088 INFO L82 PathProgramCache]: Analyzing trace with hash 2103239612, now seen corresponding path program 63 times [2021-06-05 03:38:28,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:28,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21299180] [2021-06-05 03:38:28,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:28,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:28,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21299180] [2021-06-05 03:38:28,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21299180] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:28,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:28,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:28,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152649155] [2021-06-05 03:38:28,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:28,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:28,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:28,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:28,160 INFO L87 Difference]: Start difference. First operand 401 states and 1296 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:28,201 INFO L93 Difference]: Finished difference Result 829 states and 2489 transitions. [2021-06-05 03:38:28,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:28,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:28,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:28,203 INFO L225 Difference]: With dead ends: 829 [2021-06-05 03:38:28,203 INFO L226 Difference]: Without dead ends: 750 [2021-06-05 03:38:28,203 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:28,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-06-05 03:38:28,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 409. [2021-06-05 03:38:28,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 3.2254901960784315) internal successors, (1316), 408 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1316 transitions. [2021-06-05 03:38:28,216 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1316 transitions. Word has length 21 [2021-06-05 03:38:28,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:28,216 INFO L482 AbstractCegarLoop]: Abstraction has 409 states and 1316 transitions. [2021-06-05 03:38:28,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,216 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1316 transitions. [2021-06-05 03:38:28,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:28,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:28,217 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:28,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 03:38:28,217 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:28,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:28,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1049070524, now seen corresponding path program 64 times [2021-06-05 03:38:28,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:28,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068889992] [2021-06-05 03:38:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:28,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:28,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068889992] [2021-06-05 03:38:28,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068889992] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:28,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:28,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:28,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105864910] [2021-06-05 03:38:28,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:28,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:28,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:28,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:28,287 INFO L87 Difference]: Start difference. First operand 409 states and 1316 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:28,340 INFO L93 Difference]: Finished difference Result 777 states and 2360 transitions. [2021-06-05 03:38:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:28,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:28,342 INFO L225 Difference]: With dead ends: 777 [2021-06-05 03:38:28,342 INFO L226 Difference]: Without dead ends: 678 [2021-06-05 03:38:28,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:28,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-06-05 03:38:28,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 401. [2021-06-05 03:38:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.23) internal successors, (1292), 400 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1292 transitions. [2021-06-05 03:38:28,352 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1292 transitions. Word has length 21 [2021-06-05 03:38:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:28,352 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 1292 transitions. [2021-06-05 03:38:28,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1292 transitions. [2021-06-05 03:38:28,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:28,353 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:28,353 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:28,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 03:38:28,353 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:28,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:28,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1868918118, now seen corresponding path program 65 times [2021-06-05 03:38:28,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:28,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741895936] [2021-06-05 03:38:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:28,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:28,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741895936] [2021-06-05 03:38:28,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741895936] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:28,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:28,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:28,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612392433] [2021-06-05 03:38:28,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:28,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:28,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:28,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:28,444 INFO L87 Difference]: Start difference. First operand 401 states and 1292 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:28,492 INFO L93 Difference]: Finished difference Result 805 states and 2409 transitions. [2021-06-05 03:38:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:28,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:28,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:28,493 INFO L225 Difference]: With dead ends: 805 [2021-06-05 03:38:28,494 INFO L226 Difference]: Without dead ends: 695 [2021-06-05 03:38:28,494 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:28,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-06-05 03:38:28,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 423. [2021-06-05 03:38:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 3.1966824644549763) internal successors, (1349), 422 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1349 transitions. [2021-06-05 03:38:28,505 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1349 transitions. Word has length 21 [2021-06-05 03:38:28,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:28,505 INFO L482 AbstractCegarLoop]: Abstraction has 423 states and 1349 transitions. [2021-06-05 03:38:28,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1349 transitions. [2021-06-05 03:38:28,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:28,506 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:28,506 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:28,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 03:38:28,506 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:28,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:28,506 INFO L82 PathProgramCache]: Analyzing trace with hash 857120636, now seen corresponding path program 66 times [2021-06-05 03:38:28,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:28,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000575227] [2021-06-05 03:38:28,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:28,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:28,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000575227] [2021-06-05 03:38:28,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000575227] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:28,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:28,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:28,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286920029] [2021-06-05 03:38:28,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:28,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:28,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:28,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:28,582 INFO L87 Difference]: Start difference. First operand 423 states and 1349 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:28,634 INFO L93 Difference]: Finished difference Result 722 states and 2171 transitions. [2021-06-05 03:38:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:28,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:28,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:28,636 INFO L225 Difference]: With dead ends: 722 [2021-06-05 03:38:28,636 INFO L226 Difference]: Without dead ends: 601 [2021-06-05 03:38:28,636 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:28,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-06-05 03:38:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 393. [2021-06-05 03:38:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.2346938775510203) internal successors, (1268), 392 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1268 transitions. [2021-06-05 03:38:28,645 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1268 transitions. Word has length 21 [2021-06-05 03:38:28,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:28,645 INFO L482 AbstractCegarLoop]: Abstraction has 393 states and 1268 transitions. [2021-06-05 03:38:28,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1268 transitions. [2021-06-05 03:38:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:28,646 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:28,646 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:28,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 03:38:28,647 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:28,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1893120794, now seen corresponding path program 67 times [2021-06-05 03:38:28,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:28,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783953275] [2021-06-05 03:38:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:28,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:28,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783953275] [2021-06-05 03:38:28,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783953275] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:28,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:28,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:28,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787276657] [2021-06-05 03:38:28,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:28,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:28,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:28,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:28,726 INFO L87 Difference]: Start difference. First operand 393 states and 1268 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:28,764 INFO L93 Difference]: Finished difference Result 788 states and 2359 transitions. [2021-06-05 03:38:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:28,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:28,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:28,766 INFO L225 Difference]: With dead ends: 788 [2021-06-05 03:38:28,766 INFO L226 Difference]: Without dead ends: 709 [2021-06-05 03:38:28,766 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:28,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2021-06-05 03:38:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 405. [2021-06-05 03:38:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.227722772277228) internal successors, (1304), 404 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1304 transitions. [2021-06-05 03:38:28,776 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1304 transitions. Word has length 21 [2021-06-05 03:38:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:28,776 INFO L482 AbstractCegarLoop]: Abstraction has 405 states and 1304 transitions. [2021-06-05 03:38:28,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1304 transitions. [2021-06-05 03:38:28,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:28,777 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:28,777 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:28,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-05 03:38:28,778 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:28,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:28,778 INFO L82 PathProgramCache]: Analyzing trace with hash 401625882, now seen corresponding path program 68 times [2021-06-05 03:38:28,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:28,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300726595] [2021-06-05 03:38:28,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:28,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:28,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:28,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300726595] [2021-06-05 03:38:28,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300726595] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:28,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:28,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:28,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047110395] [2021-06-05 03:38:28,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:28,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:28,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:28,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:28,867 INFO L87 Difference]: Start difference. First operand 405 states and 1304 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:28,926 INFO L93 Difference]: Finished difference Result 802 states and 2396 transitions. [2021-06-05 03:38:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:28,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:28,928 INFO L225 Difference]: With dead ends: 802 [2021-06-05 03:38:28,928 INFO L226 Difference]: Without dead ends: 701 [2021-06-05 03:38:28,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 98.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:28,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2021-06-05 03:38:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 397. [2021-06-05 03:38:28,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.2323232323232323) internal successors, (1280), 396 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1280 transitions. [2021-06-05 03:38:28,938 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1280 transitions. Word has length 21 [2021-06-05 03:38:28,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:28,938 INFO L482 AbstractCegarLoop]: Abstraction has 397 states and 1280 transitions. [2021-06-05 03:38:28,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:28,938 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1280 transitions. [2021-06-05 03:38:28,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:28,939 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:28,939 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:28,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 03:38:28,939 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:28,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:28,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1320783876, now seen corresponding path program 69 times [2021-06-05 03:38:28,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:28,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179780883] [2021-06-05 03:38:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:29,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:29,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:29,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179780883] [2021-06-05 03:38:29,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179780883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:29,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:29,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:29,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526967290] [2021-06-05 03:38:29,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:29,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:29,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:29,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:29,014 INFO L87 Difference]: Start difference. First operand 397 states and 1280 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:29,052 INFO L93 Difference]: Finished difference Result 800 states and 2395 transitions. [2021-06-05 03:38:29,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:29,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:29,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:29,054 INFO L225 Difference]: With dead ends: 800 [2021-06-05 03:38:29,054 INFO L226 Difference]: Without dead ends: 721 [2021-06-05 03:38:29,054 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:29,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-06-05 03:38:29,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 405. [2021-06-05 03:38:29,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.217821782178218) internal successors, (1300), 404 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1300 transitions. [2021-06-05 03:38:29,064 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1300 transitions. Word has length 21 [2021-06-05 03:38:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:29,064 INFO L482 AbstractCegarLoop]: Abstraction has 405 states and 1300 transitions. [2021-06-05 03:38:29,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,065 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1300 transitions. [2021-06-05 03:38:29,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:29,065 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:29,065 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:29,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 03:38:29,066 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:29,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:29,066 INFO L82 PathProgramCache]: Analyzing trace with hash 202273562, now seen corresponding path program 70 times [2021-06-05 03:38:29,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:29,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288872006] [2021-06-05 03:38:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:29,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:29,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288872006] [2021-06-05 03:38:29,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288872006] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:29,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:29,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:29,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477118584] [2021-06-05 03:38:29,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:29,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:29,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:29,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:29,146 INFO L87 Difference]: Start difference. First operand 405 states and 1300 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:29,197 INFO L93 Difference]: Finished difference Result 748 states and 2266 transitions. [2021-06-05 03:38:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:29,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:29,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:29,199 INFO L225 Difference]: With dead ends: 748 [2021-06-05 03:38:29,199 INFO L226 Difference]: Without dead ends: 649 [2021-06-05 03:38:29,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:29,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-06-05 03:38:29,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 397. [2021-06-05 03:38:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.2222222222222223) internal successors, (1276), 396 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1276 transitions. [2021-06-05 03:38:29,209 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1276 transitions. Word has length 21 [2021-06-05 03:38:29,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:29,209 INFO L482 AbstractCegarLoop]: Abstraction has 397 states and 1276 transitions. [2021-06-05 03:38:29,209 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,209 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1276 transitions. [2021-06-05 03:38:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:29,210 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:29,210 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:29,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-05 03:38:29,210 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:29,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:29,211 INFO L82 PathProgramCache]: Analyzing trace with hash 957414170, now seen corresponding path program 71 times [2021-06-05 03:38:29,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:29,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949795305] [2021-06-05 03:38:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:29,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:29,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949795305] [2021-06-05 03:38:29,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949795305] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:29,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:29,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:29,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17139045] [2021-06-05 03:38:29,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:29,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:29,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:29,279 INFO L87 Difference]: Start difference. First operand 397 states and 1276 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:29,336 INFO L93 Difference]: Finished difference Result 776 states and 2315 transitions. [2021-06-05 03:38:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:29,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:29,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:29,337 INFO L225 Difference]: With dead ends: 776 [2021-06-05 03:38:29,337 INFO L226 Difference]: Without dead ends: 683 [2021-06-05 03:38:29,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 85.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:29,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-06-05 03:38:29,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 411. [2021-06-05 03:38:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 3.202439024390244) internal successors, (1313), 410 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 1313 transitions. [2021-06-05 03:38:29,348 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 1313 transitions. Word has length 21 [2021-06-05 03:38:29,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:29,348 INFO L482 AbstractCegarLoop]: Abstraction has 411 states and 1313 transitions. [2021-06-05 03:38:29,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 1313 transitions. [2021-06-05 03:38:29,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:29,349 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:29,349 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:29,349 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-05 03:38:29,349 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:29,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:29,349 INFO L82 PathProgramCache]: Analyzing trace with hash -632520580, now seen corresponding path program 72 times [2021-06-05 03:38:29,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:29,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100264737] [2021-06-05 03:38:29,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:29,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:29,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100264737] [2021-06-05 03:38:29,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100264737] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:29,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:29,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:29,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489941552] [2021-06-05 03:38:29,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:29,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:29,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:29,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:29,445 INFO L87 Difference]: Start difference. First operand 411 states and 1313 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:29,501 INFO L93 Difference]: Finished difference Result 710 states and 2135 transitions. [2021-06-05 03:38:29,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:29,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:29,503 INFO L225 Difference]: With dead ends: 710 [2021-06-05 03:38:29,503 INFO L226 Difference]: Without dead ends: 593 [2021-06-05 03:38:29,503 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:29,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-06-05 03:38:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 385. [2021-06-05 03:38:29,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.2604166666666665) internal successors, (1252), 384 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1252 transitions. [2021-06-05 03:38:29,512 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1252 transitions. Word has length 21 [2021-06-05 03:38:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:29,513 INFO L482 AbstractCegarLoop]: Abstraction has 385 states and 1252 transitions. [2021-06-05 03:38:29,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1252 transitions. [2021-06-05 03:38:29,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:29,513 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:29,513 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:29,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-05 03:38:29,514 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:29,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:29,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1845007066, now seen corresponding path program 73 times [2021-06-05 03:38:29,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:29,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814398351] [2021-06-05 03:38:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:29,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:29,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814398351] [2021-06-05 03:38:29,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814398351] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:29,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:29,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:29,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385653912] [2021-06-05 03:38:29,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:29,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:29,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:29,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:29,608 INFO L87 Difference]: Start difference. First operand 385 states and 1252 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:29,660 INFO L93 Difference]: Finished difference Result 760 states and 2275 transitions. [2021-06-05 03:38:29,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:29,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:29,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:29,662 INFO L225 Difference]: With dead ends: 760 [2021-06-05 03:38:29,662 INFO L226 Difference]: Without dead ends: 673 [2021-06-05 03:38:29,662 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-06-05 03:38:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 393. [2021-06-05 03:38:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.2448979591836733) internal successors, (1272), 392 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1272 transitions. [2021-06-05 03:38:29,672 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1272 transitions. Word has length 21 [2021-06-05 03:38:29,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:29,672 INFO L482 AbstractCegarLoop]: Abstraction has 393 states and 1272 transitions. [2021-06-05 03:38:29,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,673 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1272 transitions. [2021-06-05 03:38:29,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:29,673 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:29,673 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:29,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-05 03:38:29,674 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:29,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:29,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2093116196, now seen corresponding path program 74 times [2021-06-05 03:38:29,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:29,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306587714] [2021-06-05 03:38:29,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:29,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:29,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306587714] [2021-06-05 03:38:29,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306587714] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:29,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:29,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:29,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518169599] [2021-06-05 03:38:29,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:29,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:29,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:29,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:29,776 INFO L87 Difference]: Start difference. First operand 393 states and 1272 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:29,830 INFO L93 Difference]: Finished difference Result 752 states and 2239 transitions. [2021-06-05 03:38:29,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:29,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:29,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:29,831 INFO L225 Difference]: With dead ends: 752 [2021-06-05 03:38:29,832 INFO L226 Difference]: Without dead ends: 665 [2021-06-05 03:38:29,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 89.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-06-05 03:38:29,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 385. [2021-06-05 03:38:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.25) internal successors, (1248), 384 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1248 transitions. [2021-06-05 03:38:29,843 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1248 transitions. Word has length 21 [2021-06-05 03:38:29,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:29,843 INFO L482 AbstractCegarLoop]: Abstraction has 385 states and 1248 transitions. [2021-06-05 03:38:29,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,843 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1248 transitions. [2021-06-05 03:38:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:29,846 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:29,847 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:29,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-05 03:38:29,847 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:29,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:29,847 INFO L82 PathProgramCache]: Analyzing trace with hash -198329928, now seen corresponding path program 75 times [2021-06-05 03:38:29,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:29,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794117454] [2021-06-05 03:38:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:29,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:29,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794117454] [2021-06-05 03:38:29,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794117454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:29,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:29,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:29,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464086819] [2021-06-05 03:38:29,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:29,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:29,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:29,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:29,939 INFO L87 Difference]: Start difference. First operand 385 states and 1248 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:29,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:29,990 INFO L93 Difference]: Finished difference Result 803 states and 2410 transitions. [2021-06-05 03:38:29,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:29,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:29,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:29,992 INFO L225 Difference]: With dead ends: 803 [2021-06-05 03:38:29,992 INFO L226 Difference]: Without dead ends: 716 [2021-06-05 03:38:29,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:29,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-06-05 03:38:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 405. [2021-06-05 03:38:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.237623762376238) internal successors, (1308), 404 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1308 transitions. [2021-06-05 03:38:30,004 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1308 transitions. Word has length 21 [2021-06-05 03:38:30,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:30,004 INFO L482 AbstractCegarLoop]: Abstraction has 405 states and 1308 transitions. [2021-06-05 03:38:30,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1308 transitions. [2021-06-05 03:38:30,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:30,005 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:30,005 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:30,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-05 03:38:30,006 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:30,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:30,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1057334118, now seen corresponding path program 76 times [2021-06-05 03:38:30,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:30,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280544025] [2021-06-05 03:38:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:30,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:30,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280544025] [2021-06-05 03:38:30,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280544025] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:30,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:30,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:30,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384272952] [2021-06-05 03:38:30,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:30,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:30,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:30,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:30,103 INFO L87 Difference]: Start difference. First operand 405 states and 1308 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:30,147 INFO L93 Difference]: Finished difference Result 826 states and 2465 transitions. [2021-06-05 03:38:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:30,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:30,149 INFO L225 Difference]: With dead ends: 826 [2021-06-05 03:38:30,149 INFO L226 Difference]: Without dead ends: 696 [2021-06-05 03:38:30,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-06-05 03:38:30,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 385. [2021-06-05 03:38:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.2291666666666665) internal successors, (1240), 384 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1240 transitions. [2021-06-05 03:38:30,161 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1240 transitions. Word has length 21 [2021-06-05 03:38:30,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:30,162 INFO L482 AbstractCegarLoop]: Abstraction has 385 states and 1240 transitions. [2021-06-05 03:38:30,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1240 transitions. [2021-06-05 03:38:30,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:30,163 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:30,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:30,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-05 03:38:30,163 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:30,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:30,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1739976706, now seen corresponding path program 77 times [2021-06-05 03:38:30,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:30,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959589743] [2021-06-05 03:38:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:30,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:30,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959589743] [2021-06-05 03:38:30,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959589743] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:30,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:30,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:30,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128079586] [2021-06-05 03:38:30,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:30,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:30,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:30,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:30,248 INFO L87 Difference]: Start difference. First operand 385 states and 1240 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:30,284 INFO L93 Difference]: Finished difference Result 783 states and 2330 transitions. [2021-06-05 03:38:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:30,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:30,286 INFO L225 Difference]: With dead ends: 783 [2021-06-05 03:38:30,286 INFO L226 Difference]: Without dead ends: 704 [2021-06-05 03:38:30,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:30,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-06-05 03:38:30,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 401. [2021-06-05 03:38:30,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.22) internal successors, (1288), 400 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1288 transitions. [2021-06-05 03:38:30,296 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1288 transitions. Word has length 21 [2021-06-05 03:38:30,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:30,296 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 1288 transitions. [2021-06-05 03:38:30,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1288 transitions. [2021-06-05 03:38:30,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:30,297 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:30,297 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:30,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-05 03:38:30,297 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:30,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:30,298 INFO L82 PathProgramCache]: Analyzing trace with hash 150041956, now seen corresponding path program 78 times [2021-06-05 03:38:30,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:30,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371819341] [2021-06-05 03:38:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:30,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:30,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371819341] [2021-06-05 03:38:30,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371819341] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:30,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:30,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:30,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462408679] [2021-06-05 03:38:30,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:30,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:30,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:30,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:30,383 INFO L87 Difference]: Start difference. First operand 401 states and 1288 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:30,425 INFO L93 Difference]: Finished difference Result 814 states and 2417 transitions. [2021-06-05 03:38:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:30,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:30,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:30,426 INFO L225 Difference]: With dead ends: 814 [2021-06-05 03:38:30,426 INFO L226 Difference]: Without dead ends: 680 [2021-06-05 03:38:30,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 86.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:30,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-06-05 03:38:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 377. [2021-06-05 03:38:30,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.234042553191489) internal successors, (1216), 376 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1216 transitions. [2021-06-05 03:38:30,437 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1216 transitions. Word has length 21 [2021-06-05 03:38:30,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:30,437 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 1216 transitions. [2021-06-05 03:38:30,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,437 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1216 transitions. [2021-06-05 03:38:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:30,438 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:30,438 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:30,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 03:38:30,438 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:30,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1048980186, now seen corresponding path program 79 times [2021-06-05 03:38:30,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:30,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842720130] [2021-06-05 03:38:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:30,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:30,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842720130] [2021-06-05 03:38:30,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842720130] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:30,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:30,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:30,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108678303] [2021-06-05 03:38:30,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:30,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:30,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:30,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:30,520 INFO L87 Difference]: Start difference. First operand 377 states and 1216 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:30,564 INFO L93 Difference]: Finished difference Result 796 states and 2387 transitions. [2021-06-05 03:38:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:30,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:30,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:30,566 INFO L225 Difference]: With dead ends: 796 [2021-06-05 03:38:30,566 INFO L226 Difference]: Without dead ends: 709 [2021-06-05 03:38:30,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:30,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2021-06-05 03:38:30,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 389. [2021-06-05 03:38:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.2268041237113403) internal successors, (1252), 388 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1252 transitions. [2021-06-05 03:38:30,573 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1252 transitions. Word has length 21 [2021-06-05 03:38:30,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:30,573 INFO L482 AbstractCegarLoop]: Abstraction has 389 states and 1252 transitions. [2021-06-05 03:38:30,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,573 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1252 transitions. [2021-06-05 03:38:30,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:30,574 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:30,574 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:30,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 03:38:30,574 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:30,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1297089316, now seen corresponding path program 80 times [2021-06-05 03:38:30,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:30,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731046330] [2021-06-05 03:38:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:30,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:30,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731046330] [2021-06-05 03:38:30,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731046330] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:30,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:30,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:30,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435106859] [2021-06-05 03:38:30,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:30,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:30,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:30,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:30,653 INFO L87 Difference]: Start difference. First operand 389 states and 1252 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:30,693 INFO L93 Difference]: Finished difference Result 788 states and 2351 transitions. [2021-06-05 03:38:30,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:30,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:30,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:30,694 INFO L225 Difference]: With dead ends: 788 [2021-06-05 03:38:30,695 INFO L226 Difference]: Without dead ends: 701 [2021-06-05 03:38:30,695 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:30,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2021-06-05 03:38:30,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 381. [2021-06-05 03:38:30,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.231578947368421) internal successors, (1228), 380 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1228 transitions. [2021-06-05 03:38:30,704 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1228 transitions. Word has length 21 [2021-06-05 03:38:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:30,704 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 1228 transitions. [2021-06-05 03:38:30,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1228 transitions. [2021-06-05 03:38:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:30,705 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:30,705 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:30,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 03:38:30,705 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:30,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:30,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1604768474, now seen corresponding path program 81 times [2021-06-05 03:38:30,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:30,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948759477] [2021-06-05 03:38:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:30,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:30,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948759477] [2021-06-05 03:38:30,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948759477] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:30,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:30,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:30,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127471312] [2021-06-05 03:38:30,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:30,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:30,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:30,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:30,773 INFO L87 Difference]: Start difference. First operand 381 states and 1228 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:30,823 INFO L93 Difference]: Finished difference Result 788 states and 2363 transitions. [2021-06-05 03:38:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:30,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:30,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:30,825 INFO L225 Difference]: With dead ends: 788 [2021-06-05 03:38:30,825 INFO L226 Difference]: Without dead ends: 701 [2021-06-05 03:38:30,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:30,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2021-06-05 03:38:30,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 393. [2021-06-05 03:38:30,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.2142857142857144) internal successors, (1260), 392 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1260 transitions. [2021-06-05 03:38:30,835 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1260 transitions. Word has length 21 [2021-06-05 03:38:30,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:30,835 INFO L482 AbstractCegarLoop]: Abstraction has 393 states and 1260 transitions. [2021-06-05 03:38:30,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1260 transitions. [2021-06-05 03:38:30,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:30,837 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:30,838 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:30,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 03:38:30,838 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:30,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:30,839 INFO L82 PathProgramCache]: Analyzing trace with hash -569482052, now seen corresponding path program 82 times [2021-06-05 03:38:30,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:30,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931749622] [2021-06-05 03:38:30,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:30,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:30,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931749622] [2021-06-05 03:38:30,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931749622] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:30,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:30,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:30,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291803829] [2021-06-05 03:38:30,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:30,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:30,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:30,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:30,931 INFO L87 Difference]: Start difference. First operand 393 states and 1260 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:30,985 INFO L93 Difference]: Finished difference Result 728 states and 2202 transitions. [2021-06-05 03:38:30,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:30,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:30,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:30,987 INFO L225 Difference]: With dead ends: 728 [2021-06-05 03:38:30,987 INFO L226 Difference]: Without dead ends: 625 [2021-06-05 03:38:30,987 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 87.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-06-05 03:38:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 381. [2021-06-05 03:38:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.221052631578947) internal successors, (1224), 380 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1224 transitions. [2021-06-05 03:38:30,997 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1224 transitions. Word has length 21 [2021-06-05 03:38:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:30,998 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 1224 transitions. [2021-06-05 03:38:30,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1224 transitions. [2021-06-05 03:38:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:30,999 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:30,999 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:30,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 03:38:30,999 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:30,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:31,000 INFO L82 PathProgramCache]: Analyzing trace with hash -751892188, now seen corresponding path program 83 times [2021-06-05 03:38:31,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:31,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314276496] [2021-06-05 03:38:31,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:31,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:31,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314276496] [2021-06-05 03:38:31,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314276496] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:31,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:31,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:31,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193815831] [2021-06-05 03:38:31,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:31,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:31,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:31,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:31,070 INFO L87 Difference]: Start difference. First operand 381 states and 1224 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:31,108 INFO L93 Difference]: Finished difference Result 776 states and 2315 transitions. [2021-06-05 03:38:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:31,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:31,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:31,110 INFO L225 Difference]: With dead ends: 776 [2021-06-05 03:38:31,110 INFO L226 Difference]: Without dead ends: 697 [2021-06-05 03:38:31,110 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-06-05 03:38:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 389. [2021-06-05 03:38:31,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.2061855670103094) internal successors, (1244), 388 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1244 transitions. [2021-06-05 03:38:31,119 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1244 transitions. Word has length 21 [2021-06-05 03:38:31,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:31,120 INFO L482 AbstractCegarLoop]: Abstraction has 389 states and 1244 transitions. [2021-06-05 03:38:31,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,120 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1244 transitions. [2021-06-05 03:38:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:31,121 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:31,121 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:31,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 03:38:31,121 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:31,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:31,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1995152774, now seen corresponding path program 84 times [2021-06-05 03:38:31,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:31,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47108576] [2021-06-05 03:38:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:31,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:31,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47108576] [2021-06-05 03:38:31,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47108576] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:31,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:31,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:31,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898354156] [2021-06-05 03:38:31,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:31,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:31,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:31,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:31,191 INFO L87 Difference]: Start difference. First operand 389 states and 1244 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:31,243 INFO L93 Difference]: Finished difference Result 724 states and 2186 transitions. [2021-06-05 03:38:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:31,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:31,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:31,245 INFO L225 Difference]: With dead ends: 724 [2021-06-05 03:38:31,245 INFO L226 Difference]: Without dead ends: 621 [2021-06-05 03:38:31,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-06-05 03:38:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 377. [2021-06-05 03:38:31,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.228723404255319) internal successors, (1214), 376 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1214 transitions. [2021-06-05 03:38:31,253 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1214 transitions. Word has length 21 [2021-06-05 03:38:31,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:31,253 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 1214 transitions. [2021-06-05 03:38:31,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1214 transitions. [2021-06-05 03:38:31,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:31,254 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:31,254 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:31,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 03:38:31,254 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:31,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:31,254 INFO L82 PathProgramCache]: Analyzing trace with hash 2031327800, now seen corresponding path program 85 times [2021-06-05 03:38:31,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:31,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604866877] [2021-06-05 03:38:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:31,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:31,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604866877] [2021-06-05 03:38:31,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604866877] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:31,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:31,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:31,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376910284] [2021-06-05 03:38:31,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:31,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:31,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:31,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:31,345 INFO L87 Difference]: Start difference. First operand 377 states and 1214 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:31,384 INFO L93 Difference]: Finished difference Result 791 states and 2360 transitions. [2021-06-05 03:38:31,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:31,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:31,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:31,386 INFO L225 Difference]: With dead ends: 791 [2021-06-05 03:38:31,386 INFO L226 Difference]: Without dead ends: 704 [2021-06-05 03:38:31,386 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 86.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:31,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-06-05 03:38:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 377. [2021-06-05 03:38:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.1968085106382977) internal successors, (1202), 376 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1202 transitions. [2021-06-05 03:38:31,393 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1202 transitions. Word has length 21 [2021-06-05 03:38:31,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:31,393 INFO L482 AbstractCegarLoop]: Abstraction has 377 states and 1202 transitions. [2021-06-05 03:38:31,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,393 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1202 transitions. [2021-06-05 03:38:31,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:31,394 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:31,394 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:31,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-05 03:38:31,394 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:31,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:31,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1172323610, now seen corresponding path program 86 times [2021-06-05 03:38:31,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:31,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061519082] [2021-06-05 03:38:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:31,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:31,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061519082] [2021-06-05 03:38:31,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061519082] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:31,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:31,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:31,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926015021] [2021-06-05 03:38:31,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:31,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:31,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:31,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:31,475 INFO L87 Difference]: Start difference. First operand 377 states and 1202 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:31,506 INFO L93 Difference]: Finished difference Result 814 states and 2415 transitions. [2021-06-05 03:38:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:31,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:31,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:31,507 INFO L225 Difference]: With dead ends: 814 [2021-06-05 03:38:31,507 INFO L226 Difference]: Without dead ends: 684 [2021-06-05 03:38:31,507 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-06-05 03:38:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 357. [2021-06-05 03:38:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 3.1797752808988764) internal successors, (1132), 356 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1132 transitions. [2021-06-05 03:38:31,514 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1132 transitions. Word has length 21 [2021-06-05 03:38:31,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:31,514 INFO L482 AbstractCegarLoop]: Abstraction has 357 states and 1132 transitions. [2021-06-05 03:38:31,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1132 transitions. [2021-06-05 03:38:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:31,515 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:31,515 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:31,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-05 03:38:31,515 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:31,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:31,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1824519834, now seen corresponding path program 87 times [2021-06-05 03:38:31,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:31,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808718157] [2021-06-05 03:38:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:31,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:31,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808718157] [2021-06-05 03:38:31,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808718157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:31,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:31,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:31,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482040691] [2021-06-05 03:38:31,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:31,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:31,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:31,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:31,587 INFO L87 Difference]: Start difference. First operand 357 states and 1132 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:31,636 INFO L93 Difference]: Finished difference Result 740 states and 2191 transitions. [2021-06-05 03:38:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:31,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:31,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:31,638 INFO L225 Difference]: With dead ends: 740 [2021-06-05 03:38:31,638 INFO L226 Difference]: Without dead ends: 653 [2021-06-05 03:38:31,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:31,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-06-05 03:38:31,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 369. [2021-06-05 03:38:31,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 3.1630434782608696) internal successors, (1164), 368 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 1164 transitions. [2021-06-05 03:38:31,647 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 1164 transitions. Word has length 21 [2021-06-05 03:38:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:31,647 INFO L482 AbstractCegarLoop]: Abstraction has 369 states and 1164 transitions. [2021-06-05 03:38:31,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 1164 transitions. [2021-06-05 03:38:31,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:31,648 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:31,649 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:31,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-05 03:38:31,649 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:31,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:31,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1416279014, now seen corresponding path program 88 times [2021-06-05 03:38:31,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:31,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050805788] [2021-06-05 03:38:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:31,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:31,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050805788] [2021-06-05 03:38:31,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050805788] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:31,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:31,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:31,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203203342] [2021-06-05 03:38:31,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:31,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:31,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:31,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:31,719 INFO L87 Difference]: Start difference. First operand 369 states and 1164 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:31,768 INFO L93 Difference]: Finished difference Result 680 states and 2030 transitions. [2021-06-05 03:38:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:31,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:31,770 INFO L225 Difference]: With dead ends: 680 [2021-06-05 03:38:31,770 INFO L226 Difference]: Without dead ends: 577 [2021-06-05 03:38:31,770 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:31,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-06-05 03:38:31,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 357. [2021-06-05 03:38:31,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 3.162921348314607) internal successors, (1126), 356 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1126 transitions. [2021-06-05 03:38:31,778 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1126 transitions. Word has length 21 [2021-06-05 03:38:31,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:31,778 INFO L482 AbstractCegarLoop]: Abstraction has 357 states and 1126 transitions. [2021-06-05 03:38:31,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,778 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1126 transitions. [2021-06-05 03:38:31,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:31,779 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:31,779 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:31,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-05 03:38:31,779 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:31,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:31,779 INFO L82 PathProgramCache]: Analyzing trace with hash -928326020, now seen corresponding path program 89 times [2021-06-05 03:38:31,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:31,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781937306] [2021-06-05 03:38:31,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:31,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:31,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781937306] [2021-06-05 03:38:31,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781937306] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:31,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:31,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:31,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364335544] [2021-06-05 03:38:31,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:31,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:31,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:31,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:31,847 INFO L87 Difference]: Start difference. First operand 357 states and 1126 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:31,887 INFO L93 Difference]: Finished difference Result 773 states and 2287 transitions. [2021-06-05 03:38:31,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:31,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:31,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:31,888 INFO L225 Difference]: With dead ends: 773 [2021-06-05 03:38:31,888 INFO L226 Difference]: Without dead ends: 663 [2021-06-05 03:38:31,889 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 69.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:31,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-06-05 03:38:31,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 379. [2021-06-05 03:38:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.1296296296296298) internal successors, (1183), 378 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1183 transitions. [2021-06-05 03:38:31,897 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1183 transitions. Word has length 21 [2021-06-05 03:38:31,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:31,897 INFO L482 AbstractCegarLoop]: Abstraction has 379 states and 1183 transitions. [2021-06-05 03:38:31,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:31,897 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1183 transitions. [2021-06-05 03:38:31,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:31,898 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:31,898 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:31,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-05 03:38:31,898 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:31,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:31,898 INFO L82 PathProgramCache]: Analyzing trace with hash -840389286, now seen corresponding path program 90 times [2021-06-05 03:38:31,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:31,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577295122] [2021-06-05 03:38:31,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:31,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:31,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577295122] [2021-06-05 03:38:31,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577295122] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:31,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:31,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:31,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141558891] [2021-06-05 03:38:31,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:31,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:31,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:31,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:31,967 INFO L87 Difference]: Start difference. First operand 379 states and 1183 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:32,019 INFO L93 Difference]: Finished difference Result 690 states and 2049 transitions. [2021-06-05 03:38:32,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:32,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:32,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:32,021 INFO L225 Difference]: With dead ends: 690 [2021-06-05 03:38:32,021 INFO L226 Difference]: Without dead ends: 567 [2021-06-05 03:38:32,021 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-06-05 03:38:32,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 347. [2021-06-05 03:38:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.1705202312138727) internal successors, (1097), 346 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1097 transitions. [2021-06-05 03:38:32,029 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1097 transitions. Word has length 21 [2021-06-05 03:38:32,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:32,029 INFO L482 AbstractCegarLoop]: Abstraction has 347 states and 1097 transitions. [2021-06-05 03:38:32,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1097 transitions. [2021-06-05 03:38:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:32,030 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:32,030 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:32,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-05 03:38:32,030 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:32,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:32,031 INFO L82 PathProgramCache]: Analyzing trace with hash 456830594, now seen corresponding path program 91 times [2021-06-05 03:38:32,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:32,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008538816] [2021-06-05 03:38:32,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:32,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:32,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:32,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008538816] [2021-06-05 03:38:32,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008538816] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:32,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:32,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:32,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996180413] [2021-06-05 03:38:32,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:32,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:32,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:32,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:32,107 INFO L87 Difference]: Start difference. First operand 347 states and 1097 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:32,143 INFO L93 Difference]: Finished difference Result 686 states and 2000 transitions. [2021-06-05 03:38:32,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:32,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:32,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:32,145 INFO L225 Difference]: With dead ends: 686 [2021-06-05 03:38:32,145 INFO L226 Difference]: Without dead ends: 607 [2021-06-05 03:38:32,145 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-06-05 03:38:32,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 347. [2021-06-05 03:38:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.147398843930636) internal successors, (1089), 346 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1089 transitions. [2021-06-05 03:38:32,153 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1089 transitions. Word has length 21 [2021-06-05 03:38:32,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:32,153 INFO L482 AbstractCegarLoop]: Abstraction has 347 states and 1089 transitions. [2021-06-05 03:38:32,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,153 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1089 transitions. [2021-06-05 03:38:32,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:32,154 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:32,154 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:32,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-05 03:38:32,154 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:32,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:32,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1133104156, now seen corresponding path program 92 times [2021-06-05 03:38:32,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:32,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934876135] [2021-06-05 03:38:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:32,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:32,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934876135] [2021-06-05 03:38:32,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934876135] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:32,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:32,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:32,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920215319] [2021-06-05 03:38:32,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:32,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:32,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:32,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:32,230 INFO L87 Difference]: Start difference. First operand 347 states and 1089 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:32,274 INFO L93 Difference]: Finished difference Result 717 states and 2087 transitions. [2021-06-05 03:38:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:32,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:32,275 INFO L225 Difference]: With dead ends: 717 [2021-06-05 03:38:32,275 INFO L226 Difference]: Without dead ends: 591 [2021-06-05 03:38:32,275 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:32,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-06-05 03:38:32,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 331. [2021-06-05 03:38:32,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 3.1303030303030304) internal successors, (1033), 330 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 1033 transitions. [2021-06-05 03:38:32,285 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 1033 transitions. Word has length 21 [2021-06-05 03:38:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:32,285 INFO L482 AbstractCegarLoop]: Abstraction has 331 states and 1033 transitions. [2021-06-05 03:38:32,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 1033 transitions. [2021-06-05 03:38:32,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:32,286 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:32,286 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:32,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-05 03:38:32,286 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:32,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:32,287 INFO L82 PathProgramCache]: Analyzing trace with hash 250022628, now seen corresponding path program 93 times [2021-06-05 03:38:32,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:32,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112628688] [2021-06-05 03:38:32,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:32,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:32,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112628688] [2021-06-05 03:38:32,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112628688] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:32,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:32,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:32,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868698103] [2021-06-05 03:38:32,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:32,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:32,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:32,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:32,358 INFO L87 Difference]: Start difference. First operand 331 states and 1033 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:32,399 INFO L93 Difference]: Finished difference Result 690 states and 2004 transitions. [2021-06-05 03:38:32,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:32,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:32,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:32,400 INFO L225 Difference]: With dead ends: 690 [2021-06-05 03:38:32,400 INFO L226 Difference]: Without dead ends: 611 [2021-06-05 03:38:32,400 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:32,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-06-05 03:38:32,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 339. [2021-06-05 03:38:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 3.1153846153846154) internal successors, (1053), 338 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 1053 transitions. [2021-06-05 03:38:32,408 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 1053 transitions. Word has length 21 [2021-06-05 03:38:32,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:32,408 INFO L482 AbstractCegarLoop]: Abstraction has 339 states and 1053 transitions. [2021-06-05 03:38:32,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,408 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 1053 transitions. [2021-06-05 03:38:32,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:32,410 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:32,410 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:32,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-05 03:38:32,410 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:32,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:32,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1930519268, now seen corresponding path program 94 times [2021-06-05 03:38:32,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:32,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064494160] [2021-06-05 03:38:32,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:32,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:32,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064494160] [2021-06-05 03:38:32,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064494160] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:32,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:32,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:32,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420020083] [2021-06-05 03:38:32,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:32,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:32,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:32,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:32,479 INFO L87 Difference]: Start difference. First operand 339 states and 1053 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:32,529 INFO L93 Difference]: Finished difference Result 638 states and 1875 transitions. [2021-06-05 03:38:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:32,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:32,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:32,530 INFO L225 Difference]: With dead ends: 638 [2021-06-05 03:38:32,530 INFO L226 Difference]: Without dead ends: 539 [2021-06-05 03:38:32,530 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 83.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:32,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-06-05 03:38:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 331. [2021-06-05 03:38:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 3.118181818181818) internal successors, (1029), 330 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 1029 transitions. [2021-06-05 03:38:32,538 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 1029 transitions. Word has length 21 [2021-06-05 03:38:32,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:32,538 INFO L482 AbstractCegarLoop]: Abstraction has 331 states and 1029 transitions. [2021-06-05 03:38:32,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 1029 transitions. [2021-06-05 03:38:32,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:32,539 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:32,539 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:32,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-05 03:38:32,539 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:32,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:32,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1667184582, now seen corresponding path program 95 times [2021-06-05 03:38:32,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:32,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599774043] [2021-06-05 03:38:32,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:32,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:32,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599774043] [2021-06-05 03:38:32,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599774043] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:32,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:32,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:32,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750256275] [2021-06-05 03:38:32,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:32,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:32,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:32,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:32,604 INFO L87 Difference]: Start difference. First operand 331 states and 1029 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:32,637 INFO L93 Difference]: Finished difference Result 666 states and 1924 transitions. [2021-06-05 03:38:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:32,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:32,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:32,638 INFO L225 Difference]: With dead ends: 666 [2021-06-05 03:38:32,638 INFO L226 Difference]: Without dead ends: 556 [2021-06-05 03:38:32,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-06-05 03:38:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 284. [2021-06-05 03:38:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.0530035335689045) internal successors, (864), 283 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 864 transitions. [2021-06-05 03:38:32,645 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 864 transitions. Word has length 21 [2021-06-05 03:38:32,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:32,645 INFO L482 AbstractCegarLoop]: Abstraction has 284 states and 864 transitions. [2021-06-05 03:38:32,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,646 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 864 transitions. [2021-06-05 03:38:32,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:32,646 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:32,646 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:32,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-05 03:38:32,646 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:32,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:32,647 INFO L82 PathProgramCache]: Analyzing trace with hash 275040036, now seen corresponding path program 96 times [2021-06-05 03:38:32,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:32,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667270243] [2021-06-05 03:38:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:32,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:32,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667270243] [2021-06-05 03:38:32,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667270243] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:32,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:32,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:32,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534020476] [2021-06-05 03:38:32,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:32,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:32,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:32,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:32,715 INFO L87 Difference]: Start difference. First operand 284 states and 864 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:32,765 INFO L93 Difference]: Finished difference Result 583 states and 1686 transitions. [2021-06-05 03:38:32,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:32,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:32,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:32,767 INFO L225 Difference]: With dead ends: 583 [2021-06-05 03:38:32,767 INFO L226 Difference]: Without dead ends: 458 [2021-06-05 03:38:32,767 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:32,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-06-05 03:38:32,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 250. [2021-06-05 03:38:32,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.1204819277108435) internal successors, (777), 249 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 777 transitions. [2021-06-05 03:38:32,771 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 777 transitions. Word has length 21 [2021-06-05 03:38:32,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:32,771 INFO L482 AbstractCegarLoop]: Abstraction has 250 states and 777 transitions. [2021-06-05 03:38:32,771 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 777 transitions. [2021-06-05 03:38:32,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:32,772 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:32,772 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:32,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-05 03:38:32,772 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:32,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:32,772 INFO L82 PathProgramCache]: Analyzing trace with hash 988259000, now seen corresponding path program 97 times [2021-06-05 03:38:32,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:32,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021191971] [2021-06-05 03:38:32,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:32,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:32,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021191971] [2021-06-05 03:38:32,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021191971] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:32,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:32,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:32,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701311058] [2021-06-05 03:38:32,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:32,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:32,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:32,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:32,849 INFO L87 Difference]: Start difference. First operand 250 states and 777 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:32,896 INFO L93 Difference]: Finished difference Result 513 states and 1487 transitions. [2021-06-05 03:38:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:32,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:32,898 INFO L225 Difference]: With dead ends: 513 [2021-06-05 03:38:32,898 INFO L226 Difference]: Without dead ends: 426 [2021-06-05 03:38:32,898 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:32,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-06-05 03:38:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 258. [2021-06-05 03:38:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 3.1011673151750974) internal successors, (797), 257 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 797 transitions. [2021-06-05 03:38:32,904 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 797 transitions. Word has length 21 [2021-06-05 03:38:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:32,904 INFO L482 AbstractCegarLoop]: Abstraction has 258 states and 797 transitions. [2021-06-05 03:38:32,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 797 transitions. [2021-06-05 03:38:32,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:32,904 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:32,905 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:32,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-05 03:38:32,905 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:32,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:32,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1236368130, now seen corresponding path program 98 times [2021-06-05 03:38:32,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:32,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868636655] [2021-06-05 03:38:32,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:32,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:32,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868636655] [2021-06-05 03:38:32,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868636655] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:32,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:32,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:32,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697877628] [2021-06-05 03:38:32,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:32,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:32,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:32,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:32,973 INFO L87 Difference]: Start difference. First operand 258 states and 797 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:33,008 INFO L93 Difference]: Finished difference Result 505 states and 1451 transitions. [2021-06-05 03:38:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:33,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:33,009 INFO L225 Difference]: With dead ends: 505 [2021-06-05 03:38:33,009 INFO L226 Difference]: Without dead ends: 418 [2021-06-05 03:38:33,009 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-06-05 03:38:33,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 250. [2021-06-05 03:38:33,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.104417670682731) internal successors, (773), 249 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 773 transitions. [2021-06-05 03:38:33,015 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 773 transitions. Word has length 21 [2021-06-05 03:38:33,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:33,015 INFO L482 AbstractCegarLoop]: Abstraction has 250 states and 773 transitions. [2021-06-05 03:38:33,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 773 transitions. [2021-06-05 03:38:33,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:33,016 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:33,016 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:33,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-05 03:38:33,016 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:33,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:33,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2114241864, now seen corresponding path program 99 times [2021-06-05 03:38:33,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:33,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706319614] [2021-06-05 03:38:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:33,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:33,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706319614] [2021-06-05 03:38:33,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706319614] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:33,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:33,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:33,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37262604] [2021-06-05 03:38:33,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:33,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:33,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:33,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:33,084 INFO L87 Difference]: Start difference. First operand 250 states and 773 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:33,132 INFO L93 Difference]: Finished difference Result 531 states and 1544 transitions. [2021-06-05 03:38:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:33,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:33,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:33,133 INFO L225 Difference]: With dead ends: 531 [2021-06-05 03:38:33,133 INFO L226 Difference]: Without dead ends: 444 [2021-06-05 03:38:33,133 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:33,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-06-05 03:38:33,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 262. [2021-06-05 03:38:33,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.0842911877394634) internal successors, (805), 261 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 805 transitions. [2021-06-05 03:38:33,139 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 805 transitions. Word has length 21 [2021-06-05 03:38:33,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:33,139 INFO L482 AbstractCegarLoop]: Abstraction has 262 states and 805 transitions. [2021-06-05 03:38:33,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,139 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 805 transitions. [2021-06-05 03:38:33,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:33,140 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:33,140 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:33,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-05 03:38:33,140 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:33,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:33,140 INFO L82 PathProgramCache]: Analyzing trace with hash 664098074, now seen corresponding path program 100 times [2021-06-05 03:38:33,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:33,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066942505] [2021-06-05 03:38:33,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:33,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:33,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066942505] [2021-06-05 03:38:33,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066942505] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:33,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:33,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:33,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537381077] [2021-06-05 03:38:33,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:33,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:33,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:33,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:33,207 INFO L87 Difference]: Start difference. First operand 262 states and 805 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:33,259 INFO L93 Difference]: Finished difference Result 537 states and 1549 transitions. [2021-06-05 03:38:33,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:33,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:33,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:33,260 INFO L225 Difference]: With dead ends: 537 [2021-06-05 03:38:33,260 INFO L226 Difference]: Without dead ends: 432 [2021-06-05 03:38:33,260 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:33,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-06-05 03:38:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 250. [2021-06-05 03:38:33,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.0883534136546187) internal successors, (769), 249 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 769 transitions. [2021-06-05 03:38:33,266 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 769 transitions. Word has length 21 [2021-06-05 03:38:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:33,266 INFO L482 AbstractCegarLoop]: Abstraction has 250 states and 769 transitions. [2021-06-05 03:38:33,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 769 transitions. [2021-06-05 03:38:33,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:33,267 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:33,267 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:33,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-05 03:38:33,267 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:33,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:33,267 INFO L82 PathProgramCache]: Analyzing trace with hash -175935230, now seen corresponding path program 101 times [2021-06-05 03:38:33,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:33,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779429406] [2021-06-05 03:38:33,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:33,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:33,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779429406] [2021-06-05 03:38:33,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779429406] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:33,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:33,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:33,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647466333] [2021-06-05 03:38:33,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:33,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:33,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:33,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:33,343 INFO L87 Difference]: Start difference. First operand 250 states and 769 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:33,379 INFO L93 Difference]: Finished difference Result 511 states and 1468 transitions. [2021-06-05 03:38:33,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:33,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:33,380 INFO L225 Difference]: With dead ends: 511 [2021-06-05 03:38:33,380 INFO L226 Difference]: Without dead ends: 432 [2021-06-05 03:38:33,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:33,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-06-05 03:38:33,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 258. [2021-06-05 03:38:33,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 3.0700389105058368) internal successors, (789), 257 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 789 transitions. [2021-06-05 03:38:33,386 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 789 transitions. Word has length 21 [2021-06-05 03:38:33,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:33,386 INFO L482 AbstractCegarLoop]: Abstraction has 258 states and 789 transitions. [2021-06-05 03:38:33,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,386 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 789 transitions. [2021-06-05 03:38:33,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:33,386 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:33,386 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:33,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-05 03:38:33,387 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:33,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:33,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1744863772, now seen corresponding path program 102 times [2021-06-05 03:38:33,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:33,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83303393] [2021-06-05 03:38:33,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:33,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:33,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83303393] [2021-06-05 03:38:33,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83303393] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:33,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:33,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:33,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092060551] [2021-06-05 03:38:33,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:33,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:33,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:33,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:33,463 INFO L87 Difference]: Start difference. First operand 258 states and 789 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:33,518 INFO L93 Difference]: Finished difference Result 525 states and 1505 transitions. [2021-06-05 03:38:33,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:33,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:33,519 INFO L225 Difference]: With dead ends: 525 [2021-06-05 03:38:33,520 INFO L226 Difference]: Without dead ends: 420 [2021-06-05 03:38:33,520 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:33,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-06-05 03:38:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 246. [2021-06-05 03:38:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.0979591836734692) internal successors, (759), 245 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 759 transitions. [2021-06-05 03:38:33,525 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 759 transitions. Word has length 21 [2021-06-05 03:38:33,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:33,525 INFO L482 AbstractCegarLoop]: Abstraction has 246 states and 759 transitions. [2021-06-05 03:38:33,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 759 transitions. [2021-06-05 03:38:33,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:33,526 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:33,526 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:33,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-05 03:38:33,526 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:33,526 INFO L82 PathProgramCache]: Analyzing trace with hash 507356954, now seen corresponding path program 103 times [2021-06-05 03:38:33,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:33,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678959870] [2021-06-05 03:38:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:33,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:33,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678959870] [2021-06-05 03:38:33,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678959870] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:33,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:33,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:33,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563603623] [2021-06-05 03:38:33,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:33,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:33,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:33,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:33,603 INFO L87 Difference]: Start difference. First operand 246 states and 759 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:33,647 INFO L93 Difference]: Finished difference Result 501 states and 1441 transitions. [2021-06-05 03:38:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:33,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:33,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:33,648 INFO L225 Difference]: With dead ends: 501 [2021-06-05 03:38:33,648 INFO L226 Difference]: Without dead ends: 414 [2021-06-05 03:38:33,648 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 86.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:33,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-06-05 03:38:33,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 246. [2021-06-05 03:38:33,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.0653061224489795) internal successors, (751), 245 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 751 transitions. [2021-06-05 03:38:33,652 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 751 transitions. Word has length 21 [2021-06-05 03:38:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:33,652 INFO L482 AbstractCegarLoop]: Abstraction has 246 states and 751 transitions. [2021-06-05 03:38:33,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 751 transitions. [2021-06-05 03:38:33,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:33,652 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:33,653 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:33,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-05 03:38:33,653 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:33,656 INFO L82 PathProgramCache]: Analyzing trace with hash 755466084, now seen corresponding path program 104 times [2021-06-05 03:38:33,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:33,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854526765] [2021-06-05 03:38:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:33,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:33,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:33,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854526765] [2021-06-05 03:38:33,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854526765] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:33,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:33,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:33,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992012837] [2021-06-05 03:38:33,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:33,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:33,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:33,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:33,735 INFO L87 Difference]: Start difference. First operand 246 states and 751 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:33,768 INFO L93 Difference]: Finished difference Result 493 states and 1405 transitions. [2021-06-05 03:38:33,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:33,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:33,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:33,769 INFO L225 Difference]: With dead ends: 493 [2021-06-05 03:38:33,769 INFO L226 Difference]: Without dead ends: 406 [2021-06-05 03:38:33,769 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-06-05 03:38:33,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 238. [2021-06-05 03:38:33,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 3.067510548523207) internal successors, (727), 237 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 727 transitions. [2021-06-05 03:38:33,774 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 727 transitions. Word has length 21 [2021-06-05 03:38:33,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:33,775 INFO L482 AbstractCegarLoop]: Abstraction has 238 states and 727 transitions. [2021-06-05 03:38:33,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 727 transitions. [2021-06-05 03:38:33,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:33,775 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:33,775 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:33,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-05 03:38:33,775 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:33,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:33,776 INFO L82 PathProgramCache]: Analyzing trace with hash -418293064, now seen corresponding path program 105 times [2021-06-05 03:38:33,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:33,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034482265] [2021-06-05 03:38:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:33,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:33,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034482265] [2021-06-05 03:38:33,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034482265] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:33,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:33,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:33,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487760864] [2021-06-05 03:38:33,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:33,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:33,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:33,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:33,852 INFO L87 Difference]: Start difference. First operand 238 states and 727 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:33,903 INFO L93 Difference]: Finished difference Result 493 states and 1417 transitions. [2021-06-05 03:38:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:33,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:33,904 INFO L225 Difference]: With dead ends: 493 [2021-06-05 03:38:33,904 INFO L226 Difference]: Without dead ends: 406 [2021-06-05 03:38:33,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 90.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-06-05 03:38:33,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 250. [2021-06-05 03:38:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.0481927710843375) internal successors, (759), 249 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 759 transitions. [2021-06-05 03:38:33,908 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 759 transitions. Word has length 21 [2021-06-05 03:38:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:33,908 INFO L482 AbstractCegarLoop]: Abstraction has 250 states and 759 transitions. [2021-06-05 03:38:33,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:33,908 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 759 transitions. [2021-06-05 03:38:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:33,909 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:33,909 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:33,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-05 03:38:33,909 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:33,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:33,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1702423706, now seen corresponding path program 106 times [2021-06-05 03:38:33,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:33,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816557001] [2021-06-05 03:38:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:33,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:33,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816557001] [2021-06-05 03:38:33,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816557001] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:33,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:33,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:33,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091948908] [2021-06-05 03:38:33,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:33,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:33,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:33,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:33,979 INFO L87 Difference]: Start difference. First operand 250 states and 759 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:34,028 INFO L93 Difference]: Finished difference Result 433 states and 1256 transitions. [2021-06-05 03:38:34,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:34,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:34,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:34,029 INFO L225 Difference]: With dead ends: 433 [2021-06-05 03:38:34,030 INFO L226 Difference]: Without dead ends: 330 [2021-06-05 03:38:34,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:34,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-06-05 03:38:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 238. [2021-06-05 03:38:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 3.050632911392405) internal successors, (723), 237 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 723 transitions. [2021-06-05 03:38:34,034 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 723 transitions. Word has length 21 [2021-06-05 03:38:34,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:34,035 INFO L482 AbstractCegarLoop]: Abstraction has 238 states and 723 transitions. [2021-06-05 03:38:34,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,035 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 723 transitions. [2021-06-05 03:38:34,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:34,035 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:34,035 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:34,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-05 03:38:34,035 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:34,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1520013570, now seen corresponding path program 107 times [2021-06-05 03:38:34,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:34,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190908784] [2021-06-05 03:38:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:34,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:34,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190908784] [2021-06-05 03:38:34,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190908784] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:34,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:34,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:34,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305399061] [2021-06-05 03:38:34,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:34,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:34,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:34,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:34,104 INFO L87 Difference]: Start difference. First operand 238 states and 723 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:34,137 INFO L93 Difference]: Finished difference Result 481 states and 1369 transitions. [2021-06-05 03:38:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:34,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:34,138 INFO L225 Difference]: With dead ends: 481 [2021-06-05 03:38:34,139 INFO L226 Difference]: Without dead ends: 402 [2021-06-05 03:38:34,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 70.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:34,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-06-05 03:38:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 246. [2021-06-05 03:38:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.0326530612244897) internal successors, (743), 245 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 743 transitions. [2021-06-05 03:38:34,144 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 743 transitions. Word has length 21 [2021-06-05 03:38:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:34,144 INFO L482 AbstractCegarLoop]: Abstraction has 246 states and 743 transitions. [2021-06-05 03:38:34,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,144 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 743 transitions. [2021-06-05 03:38:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:34,145 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:34,145 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:34,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-05 03:38:34,145 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:34,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:34,145 INFO L82 PathProgramCache]: Analyzing trace with hash -27908764, now seen corresponding path program 108 times [2021-06-05 03:38:34,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:34,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840334674] [2021-06-05 03:38:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:34,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:34,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840334674] [2021-06-05 03:38:34,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840334674] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:34,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:34,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:34,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024998029] [2021-06-05 03:38:34,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:34,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:34,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:34,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:34,213 INFO L87 Difference]: Start difference. First operand 246 states and 743 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:34,261 INFO L93 Difference]: Finished difference Result 429 states and 1240 transitions. [2021-06-05 03:38:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:34,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:34,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:34,261 INFO L225 Difference]: With dead ends: 429 [2021-06-05 03:38:34,261 INFO L226 Difference]: Without dead ends: 326 [2021-06-05 03:38:34,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:34,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-06-05 03:38:34,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 234. [2021-06-05 03:38:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.060085836909871) internal successors, (713), 233 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 713 transitions. [2021-06-05 03:38:34,265 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 713 transitions. Word has length 21 [2021-06-05 03:38:34,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:34,265 INFO L482 AbstractCegarLoop]: Abstraction has 234 states and 713 transitions. [2021-06-05 03:38:34,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,265 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 713 transitions. [2021-06-05 03:38:34,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:34,265 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:34,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:34,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-05 03:38:34,266 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:34,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:34,266 INFO L82 PathProgramCache]: Analyzing trace with hash -577641800, now seen corresponding path program 109 times [2021-06-05 03:38:34,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:34,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432933590] [2021-06-05 03:38:34,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:34,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:34,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432933590] [2021-06-05 03:38:34,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432933590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:34,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:34,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:34,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598028360] [2021-06-05 03:38:34,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:34,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:34,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:34,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:34,356 INFO L87 Difference]: Start difference. First operand 234 states and 713 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:34,393 INFO L93 Difference]: Finished difference Result 479 states and 1364 transitions. [2021-06-05 03:38:34,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:34,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:34,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:34,394 INFO L225 Difference]: With dead ends: 479 [2021-06-05 03:38:34,394 INFO L226 Difference]: Without dead ends: 392 [2021-06-05 03:38:34,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:34,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-06-05 03:38:34,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 234. [2021-06-05 03:38:34,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.0085836909871246) internal successors, (701), 233 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 701 transitions. [2021-06-05 03:38:34,398 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 701 transitions. Word has length 21 [2021-06-05 03:38:34,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:34,398 INFO L482 AbstractCegarLoop]: Abstraction has 234 states and 701 transitions. [2021-06-05 03:38:34,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,398 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 701 transitions. [2021-06-05 03:38:34,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:34,398 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:34,398 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:34,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-05 03:38:34,398 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:34,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2094269158, now seen corresponding path program 110 times [2021-06-05 03:38:34,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:34,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096118812] [2021-06-05 03:38:34,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:34,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:34,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096118812] [2021-06-05 03:38:34,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096118812] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:34,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:34,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:34,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196072756] [2021-06-05 03:38:34,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:34,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:34,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:34,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:34,465 INFO L87 Difference]: Start difference. First operand 234 states and 701 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:34,522 INFO L93 Difference]: Finished difference Result 485 states and 1369 transitions. [2021-06-05 03:38:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:34,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:34,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:34,523 INFO L225 Difference]: With dead ends: 485 [2021-06-05 03:38:34,523 INFO L226 Difference]: Without dead ends: 380 [2021-06-05 03:38:34,523 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 88.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-06-05 03:38:34,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 222. [2021-06-05 03:38:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 3.0) internal successors, (663), 221 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 663 transitions. [2021-06-05 03:38:34,527 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 663 transitions. Word has length 21 [2021-06-05 03:38:34,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:34,527 INFO L482 AbstractCegarLoop]: Abstraction has 222 states and 663 transitions. [2021-06-05 03:38:34,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,527 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 663 transitions. [2021-06-05 03:38:34,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:34,528 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:34,528 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:34,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-05 03:38:34,528 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:34,528 INFO L82 PathProgramCache]: Analyzing trace with hash 503420826, now seen corresponding path program 111 times [2021-06-05 03:38:34,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:34,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825022243] [2021-06-05 03:38:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:34,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:34,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825022243] [2021-06-05 03:38:34,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825022243] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:34,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:34,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:34,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844111420] [2021-06-05 03:38:34,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:34,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:34,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:34,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:34,592 INFO L87 Difference]: Start difference. First operand 222 states and 663 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:34,632 INFO L93 Difference]: Finished difference Result 441 states and 1233 transitions. [2021-06-05 03:38:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:34,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:34,633 INFO L225 Difference]: With dead ends: 441 [2021-06-05 03:38:34,633 INFO L226 Difference]: Without dead ends: 354 [2021-06-05 03:38:34,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:34,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-06-05 03:38:34,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 198. [2021-06-05 03:38:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.918781725888325) internal successors, (575), 197 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 575 transitions. [2021-06-05 03:38:34,636 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 575 transitions. Word has length 21 [2021-06-05 03:38:34,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:34,636 INFO L482 AbstractCegarLoop]: Abstraction has 198 states and 575 transitions. [2021-06-05 03:38:34,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 575 transitions. [2021-06-05 03:38:34,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:34,636 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:34,636 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:34,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-05 03:38:34,637 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:34,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:34,637 INFO L82 PathProgramCache]: Analyzing trace with hash 906396826, now seen corresponding path program 112 times [2021-06-05 03:38:34,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:34,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075188438] [2021-06-05 03:38:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:34,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:34,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075188438] [2021-06-05 03:38:34,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075188438] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:34,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:34,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:34,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574320322] [2021-06-05 03:38:34,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:34,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:34,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:34,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:34,718 INFO L87 Difference]: Start difference. First operand 198 states and 575 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:34,756 INFO L93 Difference]: Finished difference Result 381 states and 1072 transitions. [2021-06-05 03:38:34,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:34,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:34,757 INFO L225 Difference]: With dead ends: 381 [2021-06-05 03:38:34,757 INFO L226 Difference]: Without dead ends: 278 [2021-06-05 03:38:34,757 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-06-05 03:38:34,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 186. [2021-06-05 03:38:34,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.902702702702703) internal successors, (537), 185 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 537 transitions. [2021-06-05 03:38:34,760 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 537 transitions. Word has length 21 [2021-06-05 03:38:34,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:34,760 INFO L482 AbstractCegarLoop]: Abstraction has 186 states and 537 transitions. [2021-06-05 03:38:34,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 537 transitions. [2021-06-05 03:38:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:34,761 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:34,761 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:34,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-05 03:38:34,761 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:34,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:34,762 INFO L82 PathProgramCache]: Analyzing trace with hash 100048508, now seen corresponding path program 113 times [2021-06-05 03:38:34,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:34,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390537833] [2021-06-05 03:38:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:34,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:34,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390537833] [2021-06-05 03:38:34,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390537833] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:34,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:34,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:34,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566602549] [2021-06-05 03:38:34,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:34,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:34,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:34,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:34,825 INFO L87 Difference]: Start difference. First operand 186 states and 537 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:34,873 INFO L93 Difference]: Finished difference Result 385 states and 1090 transitions. [2021-06-05 03:38:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:34,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:34,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:34,874 INFO L225 Difference]: With dead ends: 385 [2021-06-05 03:38:34,874 INFO L226 Difference]: Without dead ends: 292 [2021-06-05 03:38:34,874 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:34,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-06-05 03:38:34,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 200. [2021-06-05 03:38:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.8844221105527637) internal successors, (574), 199 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 574 transitions. [2021-06-05 03:38:34,878 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 574 transitions. Word has length 21 [2021-06-05 03:38:34,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:34,878 INFO L482 AbstractCegarLoop]: Abstraction has 200 states and 574 transitions. [2021-06-05 03:38:34,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,879 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 574 transitions. [2021-06-05 03:38:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:34,879 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:34,879 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:34,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-05 03:38:34,879 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:34,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:34,879 INFO L82 PathProgramCache]: Analyzing trace with hash -228334374, now seen corresponding path program 114 times [2021-06-05 03:38:34,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:34,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656112485] [2021-06-05 03:38:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:34,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:34,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656112485] [2021-06-05 03:38:34,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656112485] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:34,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:34,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:34,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316146403] [2021-06-05 03:38:34,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:34,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:34,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:34,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:34,944 INFO L87 Difference]: Start difference. First operand 200 states and 574 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:34,982 INFO L93 Difference]: Finished difference Result 291 states and 822 transitions. [2021-06-05 03:38:34,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:34,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:34,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:34,983 INFO L225 Difference]: With dead ends: 291 [2021-06-05 03:38:34,983 INFO L226 Difference]: Without dead ends: 180 [2021-06-05 03:38:34,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 74.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:34,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-06-05 03:38:34,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-06-05 03:38:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.916201117318436) internal successors, (522), 179 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 522 transitions. [2021-06-05 03:38:34,985 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 522 transitions. Word has length 21 [2021-06-05 03:38:34,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:34,985 INFO L482 AbstractCegarLoop]: Abstraction has 180 states and 522 transitions. [2021-06-05 03:38:34,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:34,985 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 522 transitions. [2021-06-05 03:38:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:34,986 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:34,986 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:34,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-05 03:38:34,986 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:34,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:34,986 INFO L82 PathProgramCache]: Analyzing trace with hash 2142828290, now seen corresponding path program 115 times [2021-06-05 03:38:34,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:34,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846517213] [2021-06-05 03:38:34,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:35,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:35,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846517213] [2021-06-05 03:38:35,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846517213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:35,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:35,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:35,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661284125] [2021-06-05 03:38:35,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:35,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:35,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:35,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:35,075 INFO L87 Difference]: Start difference. First operand 180 states and 522 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:35,103 INFO L93 Difference]: Finished difference Result 323 states and 891 transitions. [2021-06-05 03:38:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:35,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:35,104 INFO L225 Difference]: With dead ends: 323 [2021-06-05 03:38:35,104 INFO L226 Difference]: Without dead ends: 244 [2021-06-05 03:38:35,104 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.1ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:35,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-06-05 03:38:35,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 180. [2021-06-05 03:38:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.8715083798882683) internal successors, (514), 179 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 514 transitions. [2021-06-05 03:38:35,108 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 514 transitions. Word has length 21 [2021-06-05 03:38:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:35,108 INFO L482 AbstractCegarLoop]: Abstraction has 180 states and 514 transitions. [2021-06-05 03:38:35,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 514 transitions. [2021-06-05 03:38:35,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:35,109 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:35,109 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:35,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-05 03:38:35,109 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:35,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:35,109 INFO L82 PathProgramCache]: Analyzing trace with hash 573899748, now seen corresponding path program 116 times [2021-06-05 03:38:35,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:35,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199211752] [2021-06-05 03:38:35,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:35,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:35,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199211752] [2021-06-05 03:38:35,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199211752] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:35,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:35,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:35,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122872329] [2021-06-05 03:38:35,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:35,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:35,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:35,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:35,182 INFO L87 Difference]: Start difference. First operand 180 states and 514 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:35,221 INFO L93 Difference]: Finished difference Result 337 states and 928 transitions. [2021-06-05 03:38:35,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:35,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:35,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:35,221 INFO L225 Difference]: With dead ends: 337 [2021-06-05 03:38:35,221 INFO L226 Difference]: Without dead ends: 236 [2021-06-05 03:38:35,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-06-05 03:38:35,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 172. [2021-06-05 03:38:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.865497076023392) internal successors, (490), 171 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 490 transitions. [2021-06-05 03:38:35,224 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 490 transitions. Word has length 21 [2021-06-05 03:38:35,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:35,224 INFO L482 AbstractCegarLoop]: Abstraction has 172 states and 490 transitions. [2021-06-05 03:38:35,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 490 transitions. [2021-06-05 03:38:35,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:35,224 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:35,224 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:35,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-05 03:38:35,224 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:35,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:35,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1071076380, now seen corresponding path program 117 times [2021-06-05 03:38:35,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:35,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463705192] [2021-06-05 03:38:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:35,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:35,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463705192] [2021-06-05 03:38:35,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463705192] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:35,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:35,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:35,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208533025] [2021-06-05 03:38:35,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:35,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:35,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:35,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:35,301 INFO L87 Difference]: Start difference. First operand 172 states and 490 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:35,329 INFO L93 Difference]: Finished difference Result 299 states and 811 transitions. [2021-06-05 03:38:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:35,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:35,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:35,330 INFO L225 Difference]: With dead ends: 299 [2021-06-05 03:38:35,330 INFO L226 Difference]: Without dead ends: 220 [2021-06-05 03:38:35,330 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:35,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-06-05 03:38:35,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 156. [2021-06-05 03:38:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.8) internal successors, (434), 155 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 434 transitions. [2021-06-05 03:38:35,332 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 434 transitions. Word has length 21 [2021-06-05 03:38:35,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:35,332 INFO L482 AbstractCegarLoop]: Abstraction has 156 states and 434 transitions. [2021-06-05 03:38:35,332 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,332 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 434 transitions. [2021-06-05 03:38:35,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:35,332 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:35,332 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:35,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-05 03:38:35,333 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:35,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:35,333 INFO L82 PathProgramCache]: Analyzing trace with hash -41772188, now seen corresponding path program 118 times [2021-06-05 03:38:35,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:35,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622348689] [2021-06-05 03:38:35,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:35,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:35,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622348689] [2021-06-05 03:38:35,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622348689] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:35,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:35,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:35,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394273601] [2021-06-05 03:38:35,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:35,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:35,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:35,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:35,391 INFO L87 Difference]: Start difference. First operand 156 states and 434 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:35,429 INFO L93 Difference]: Finished difference Result 247 states and 682 transitions. [2021-06-05 03:38:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:35,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:35,430 INFO L225 Difference]: With dead ends: 247 [2021-06-05 03:38:35,430 INFO L226 Difference]: Without dead ends: 148 [2021-06-05 03:38:35,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:35,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-06-05 03:38:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-06-05 03:38:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.7891156462585034) internal successors, (410), 147 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 410 transitions. [2021-06-05 03:38:35,433 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 410 transitions. Word has length 21 [2021-06-05 03:38:35,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:35,433 INFO L482 AbstractCegarLoop]: Abstraction has 148 states and 410 transitions. [2021-06-05 03:38:35,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,433 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 410 transitions. [2021-06-05 03:38:35,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:35,433 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:35,433 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:35,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-05 03:38:35,434 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:35,434 INFO L82 PathProgramCache]: Analyzing trace with hash -920778810, now seen corresponding path program 119 times [2021-06-05 03:38:35,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:35,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023498775] [2021-06-05 03:38:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:35,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:35,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:35,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023498775] [2021-06-05 03:38:35,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023498775] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:35,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:35,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:35,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881554933] [2021-06-05 03:38:35,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:35,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:35,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:35,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:35,500 INFO L87 Difference]: Start difference. First operand 148 states and 410 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:35,542 INFO L93 Difference]: Finished difference Result 211 states and 570 transitions. [2021-06-05 03:38:35,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:35,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:35,543 INFO L225 Difference]: With dead ends: 211 [2021-06-05 03:38:35,543 INFO L226 Difference]: Without dead ends: 118 [2021-06-05 03:38:35,543 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:35,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-06-05 03:38:35,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-06-05 03:38:35,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.58974358974359) internal successors, (303), 117 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 303 transitions. [2021-06-05 03:38:35,545 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 303 transitions. Word has length 21 [2021-06-05 03:38:35,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:35,545 INFO L482 AbstractCegarLoop]: Abstraction has 118 states and 303 transitions. [2021-06-05 03:38:35,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,545 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 303 transitions. [2021-06-05 03:38:35,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-05 03:38:35,546 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:38:35,546 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:38:35,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-05 03:38:35,546 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 03:38:35,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:38:35,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1330851492, now seen corresponding path program 120 times [2021-06-05 03:38:35,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:38:35,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919606453] [2021-06-05 03:38:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:38:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:38:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:38:35,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:38:35,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919606453] [2021-06-05 03:38:35,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919606453] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:38:35,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:38:35,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 03:38:35,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612681983] [2021-06-05 03:38:35,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:38:35,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:38:35,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:38:35,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:38:35,611 INFO L87 Difference]: Start difference. First operand 118 states and 303 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:38:35,652 INFO L93 Difference]: Finished difference Result 117 states and 302 transitions. [2021-06-05 03:38:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 03:38:35,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-06-05 03:38:35,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:38:35,653 INFO L225 Difference]: With dead ends: 117 [2021-06-05 03:38:35,653 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 03:38:35,653 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 80.0ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-05 03:38:35,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 03:38:35,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 03:38:35,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 03:38:35,653 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-06-05 03:38:35,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:38:35,654 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 03:38:35,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:38:35,654 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 03:38:35,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 03:38:35,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-05 03:38:35,655 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 03:38:35,658 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 03:38:35 BasicIcfg [2021-06-05 03:38:35,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 03:38:35,658 INFO L168 Benchmark]: Toolchain (without parser) took 19316.33 ms. Allocated memory was 385.9 MB in the beginning and 690.0 MB in the end (delta: 304.1 MB). Free memory was 365.6 MB in the beginning and 316.4 MB in the end (delta: 49.2 MB). Peak memory consumption was 355.0 MB. Max. memory is 16.0 GB. [2021-06-05 03:38:35,658 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 385.9 MB. Free memory was 366.6 MB in the beginning and 366.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:38:35,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.71 ms. Allocated memory is still 385.9 MB. Free memory was 365.5 MB in the beginning and 364.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 03:38:35,659 INFO L168 Benchmark]: Boogie Preprocessor took 13.20 ms. Allocated memory is still 385.9 MB. Free memory was 364.0 MB in the beginning and 363.2 MB in the end (delta: 840.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:38:35,659 INFO L168 Benchmark]: RCFGBuilder took 248.64 ms. Allocated memory is still 385.9 MB. Free memory was 363.1 MB in the beginning and 353.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-05 03:38:35,659 INFO L168 Benchmark]: TraceAbstraction took 19014.33 ms. Allocated memory was 385.9 MB in the beginning and 690.0 MB in the end (delta: 304.1 MB). Free memory was 352.6 MB in the beginning and 316.4 MB in the end (delta: 36.1 MB). Peak memory consumption was 340.3 MB. Max. memory is 16.0 GB. [2021-06-05 03:38:35,659 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 0.15 ms. Allocated memory is still 385.9 MB. Free memory was 366.6 MB in the beginning and 366.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 35.71 ms. Allocated memory is still 385.9 MB. Free memory was 365.5 MB in the beginning and 364.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.20 ms. Allocated memory is still 385.9 MB. Free memory was 364.0 MB in the beginning and 363.2 MB in the end (delta: 840.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 248.64 ms. Allocated memory is still 385.9 MB. Free memory was 363.1 MB in the beginning and 353.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 19014.33 ms. Allocated memory was 385.9 MB in the beginning and 690.0 MB in the end (delta: 304.1 MB). Free memory was 352.6 MB in the beginning and 316.4 MB in the end (delta: 36.1 MB). Peak memory consumption was 340.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 49 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18914.3ms, OverallIterations: 124, TraceHistogramMax: 1, EmptinessCheckTime: 153.5ms, AutomataDifference: 6546.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 214.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7201 SDtfs, 9019 SDslu, 13152 SDs, 0 SdLazy, 2710 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1859.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 852 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 724 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 10062.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1148occurred in iteration=0, InterpolantAutomatonStates: 852, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1704.6ms AutomataMinimizationTime, 124 MinimizatonAttempts, 38456 StatesRemovedByMinimization, 116 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 57.4ms SsaConstructionTime, 158.7ms SatisfiabilityAnalysisTime, 9498.0ms InterpolantComputationTime, 2604 NumberOfCodeBlocks, 2604 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 2480 ConstructedInterpolants, 0 QuantifiedInterpolants, 48111 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 124 InterpolantComputations, 124 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...