/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:06:59,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:06:59,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:06:59,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:06:59,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:06:59,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:06:59,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:06:59,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:06:59,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:06:59,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:06:59,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:06:59,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:06:59,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:06:59,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:06:59,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:06:59,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:06:59,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:06:59,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:06:59,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:06:59,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:06:59,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:06:59,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:06:59,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:06:59,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:06:59,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:06:59,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:06:59,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:06:59,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:06:59,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:06:59,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:06:59,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:06:59,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:06:59,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:06:59,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:06:59,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:06:59,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:06:59,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:06:59,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:06:59,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:06:59,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:06:59,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:06:59,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:06:59,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:06:59,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:06:59,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:06:59,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:06:59,610 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:06:59,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:06:59,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:06:59,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:06:59,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:06:59,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:06:59,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:06:59,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:06:59,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:06:59,613 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:06:59,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:06:59,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:06:59,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:06:59,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:06:59,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:06:59,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:06:59,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:06:59,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:06:59,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:06:59,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:06:59,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:06:59,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:06:59,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:06:59,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:06:59,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:06:59,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:07:00,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:07:00,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:07:00,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:07:00,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:07:00,137 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:07:00,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-25 11:07:00,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da89184a9/0be50b5ebdbc436ba2491c93c8ece583/FLAGc27c737f1 [2020-09-25 11:07:00,714 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:07:00,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-25 11:07:00,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da89184a9/0be50b5ebdbc436ba2491c93c8ece583/FLAGc27c737f1 [2020-09-25 11:07:01,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da89184a9/0be50b5ebdbc436ba2491c93c8ece583 [2020-09-25 11:07:01,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:07:01,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:07:01,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:01,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:07:01,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:07:01,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:01" (1/1) ... [2020-09-25 11:07:01,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f7f464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:01, skipping insertion in model container [2020-09-25 11:07:01,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:01" (1/1) ... [2020-09-25 11:07:01,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:07:01,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:07:01,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:01,362 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:07:01,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:01,395 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:07:01,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:01 WrapperNode [2020-09-25 11:07:01,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:01,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:07:01,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:07:01,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:07:01,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:01" (1/1) ... [2020-09-25 11:07:01,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:01" (1/1) ... [2020-09-25 11:07:01,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:01" (1/1) ... [2020-09-25 11:07:01,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:01" (1/1) ... [2020-09-25 11:07:01,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:01" (1/1) ... [2020-09-25 11:07:01,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:01" (1/1) ... [2020-09-25 11:07:01,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:01" (1/1) ... [2020-09-25 11:07:01,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:07:01,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:07:01,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:07:01,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:07:01,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-25 11:07:01,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:07:01,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:07:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 11:07:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 11:07:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:07:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:07:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 11:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 11:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:07:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:07:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:07:01,848 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:07:01,849 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:07:01,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:01 BoogieIcfgContainer [2020-09-25 11:07:01,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:07:01,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:07:01,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:07:01,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:07:01,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:07:01" (1/3) ... [2020-09-25 11:07:01,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c558968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:01, skipping insertion in model container [2020-09-25 11:07:01,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:01" (2/3) ... [2020-09-25 11:07:01,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c558968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:01, skipping insertion in model container [2020-09-25 11:07:01,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:01" (3/3) ... [2020-09-25 11:07:01,864 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-1.c [2020-09-25 11:07:01,880 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:07:01,889 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:07:01,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:07:01,949 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:07:01,950 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:07:01,950 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:07:01,950 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:07:01,951 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:07:01,951 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:07:01,951 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:07:01,951 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:07:01,979 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 11:07:01,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:07:01,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:01,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:01,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:01,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:01,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 11:07:02,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:02,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188413134] [2020-09-25 11:07:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:07:02,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 11:07:02,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:07:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:07:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:02,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:02,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:02,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:02,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:07:02,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:02,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:07:02,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:07:02,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188413134] [2020-09-25 11:07:02,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:02,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:02,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597445809] [2020-09-25 11:07:02,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:02,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:02,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:02,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:02,499 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 11:07:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:02,587 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 11:07:02,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:07:02,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:07:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:02,603 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:02,604 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 11:07:02,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:07:02,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 11:07:02,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 11:07:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:02,670 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 11:07:02,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:02,671 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:02,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:02,671 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:02,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 11:07:02,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:02,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:02,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:07:02,675 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:02,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:02,675 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 11:07:02,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:02,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289773321] [2020-09-25 11:07:02,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:07:02,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:02,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 11:07:02,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:02,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:02,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:02,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:02,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:02,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:02,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:02,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:02,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:07:02,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:02,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:07:02,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289773321] [2020-09-25 11:07:02,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:02,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:02,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676824202] [2020-09-25 11:07:02,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:02,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:02,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:02,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:02,945 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 11:07:03,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:03,019 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 11:07:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:03,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 11:07:03,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:03,022 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:07:03,022 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:07:03,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:07:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:07:03,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 11:07:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:03,034 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 11:07:03,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:03,034 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:03,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:03,035 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:07:03,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:03,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:03,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:07:03,037 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:03,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:03,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 11:07:03,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:03,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236458344] [2020-09-25 11:07:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:03,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:04,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:07:04,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:04,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1775 [2020-09-25 11:07:04,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:04,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:07:04,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:04,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:04,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:04,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:04,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:04,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:04,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:04,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:04,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:04,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:05,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:05,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:05,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 11:07:05,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:05,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:05,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:05,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:05,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:05,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:05,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:05,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:07:05,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:05,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:05,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:05,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:05,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:05,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:05,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:05,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:05,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:05,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:05,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:05,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236458344] [2020-09-25 11:07:05,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:05,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:07:05,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142431288] [2020-09-25 11:07:05,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:05,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:05,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:05,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:05,149 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 11:07:05,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:05,262 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 11:07:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:05,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 11:07:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:05,265 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:05,265 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 11:07:05,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 11:07:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 11:07:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:07:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 11:07:05,277 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 11:07:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:05,278 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 11:07:05,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:05,278 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 11:07:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:07:05,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:05,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:05,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:07:05,281 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:05,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:05,281 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 11:07:05,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:05,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488734954] [2020-09-25 11:07:05,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:06,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:06,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:07:06,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:07:06,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1647 [2020-09-25 11:07:06,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:06,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:07:06,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:06,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:06,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:06,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:06,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:06,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:06,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:06,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:06,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:06,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:06,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:06,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:07,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:07,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:07,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-09-25 11:07:07,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:07,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:07,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:07,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:07,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:07,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:07,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:07,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:07:07,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:07,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:07,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:07,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:07,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:07,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:07,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:07,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:07,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:07,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:07,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:07,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:07,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:07,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:07,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:07,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:07,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488734954] [2020-09-25 11:07:07,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:07,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:07,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668931621] [2020-09-25 11:07:07,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:07,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:07,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:07,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:07,515 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 11:07:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:07,635 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 11:07:07,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:07,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 11:07:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:07,638 INFO L225 Difference]: With dead ends: 72 [2020-09-25 11:07:07,638 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:07:07,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:07:07,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:07:07,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 11:07:07,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 11:07:07,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 11:07:07,650 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 11:07:07,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:07,651 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 11:07:07,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:07,651 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 11:07:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:07:07,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:07,653 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:07,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:07:07,654 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:07,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:07,654 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 11:07:07,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:07,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315642601] [2020-09-25 11:07:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:11,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:12,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:07:12,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:07:12,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:07:12,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:12,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:07:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:12,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:12,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:12,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:12,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:12,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:12,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:12,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:12,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:12,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:12,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:15,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:15,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:07:15,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:07:15,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3091 [2020-09-25 11:07:15,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:15,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:15,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:15,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:07:15,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:15,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:15,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:15,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:15,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:15,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:15,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:15,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:15,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 11:07:15,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:15,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:15,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:15,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:15,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:15,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:15,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:15,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:07:15,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:15,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:15,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:07:15,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:15,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:15,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:15,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:15,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:07:15,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:15,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:15,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:15,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:15,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:15,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:16,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:16,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:16,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:16,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 11:07:16,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:16,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:16,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:16,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:16,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:07:16,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315642601] [2020-09-25 11:07:16,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:16,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:16,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370369576] [2020-09-25 11:07:16,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:16,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:16,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:16,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:16,075 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 11:07:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:16,226 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-09-25 11:07:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:16,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 11:07:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:16,228 INFO L225 Difference]: With dead ends: 70 [2020-09-25 11:07:16,229 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 11:07:16,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:16,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 11:07:16,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2020-09-25 11:07:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:07:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 11:07:16,248 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 11:07:16,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:16,250 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 11:07:16,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:16,250 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 11:07:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:07:16,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:16,258 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:16,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:07:16,259 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:16,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:16,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 11:07:16,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:16,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196246539] [2020-09-25 11:07:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:16,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:16,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:16,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:16,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:16,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:21,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:21,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:07:21,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:07:21,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:07:21,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:21,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:21,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:07:21,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:21,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:21,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:21,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:21,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:21,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:21,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:21,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:21,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:21,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:21,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:21,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:21,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:21,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:21,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:21,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:22,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:07:26,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:07:26,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:07:26,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:26,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 11:07:26,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:26,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:26,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 11:07:26,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:26,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:26,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:26,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:26,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:26,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:26,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:26,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:26,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:26,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 11:07:26,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:07:26,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:26,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:26,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:26,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:26,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:26,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:26,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:07:26,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:26,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 11:07:26,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196246539] [2020-09-25 11:07:26,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:26,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:07:26,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812880229] [2020-09-25 11:07:26,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:07:26,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:26,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:07:26,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:07:26,713 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 8 states. [2020-09-25 11:07:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:26,885 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2020-09-25 11:07:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:07:26,888 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 11:07:26,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:26,890 INFO L225 Difference]: With dead ends: 78 [2020-09-25 11:07:26,890 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 11:07:26,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:07:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 11:07:26,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-09-25 11:07:26,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 11:07:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-09-25 11:07:26,906 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 67 [2020-09-25 11:07:26,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:26,906 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-09-25 11:07:26,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:07:26,906 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-09-25 11:07:26,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 11:07:26,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:26,908 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:26,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:07:26,908 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:26,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:26,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 11:07:26,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:26,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335910668] [2020-09-25 11:07:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:29,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:29,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:30,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:30,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:31,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:31,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 11:07:31,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 11:07:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:07:31,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:31,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 11:07:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:31,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:31,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:31,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:31,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:31,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:31,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:31,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:31,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:31,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:31,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:31,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:36,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 11:07:36,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 11:07:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:07:36,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:36,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:07:36,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:36,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:36,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:37,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:37,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-25 11:07:37,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:07:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:07:37,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:37,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:37,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:07:37,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:37,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:37,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:37,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:37,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:07:37,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 11:07:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:37,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:37,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 11:07:37,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:37,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:37,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:37,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:37,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:37,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:37,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:37,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:37,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:37,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:37,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:37,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:37,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 11:07:37,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335910668] [2020-09-25 11:07:37,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:37,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:07:37,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358492774] [2020-09-25 11:07:37,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:07:37,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:37,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:07:37,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:07:37,514 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 8 states. [2020-09-25 11:07:37,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:37,715 INFO L93 Difference]: Finished difference Result 110 states and 171 transitions. [2020-09-25 11:07:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:07:37,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-09-25 11:07:37,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:37,719 INFO L225 Difference]: With dead ends: 110 [2020-09-25 11:07:37,719 INFO L226 Difference]: Without dead ends: 104 [2020-09-25 11:07:37,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:07:37,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-25 11:07:37,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 92. [2020-09-25 11:07:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 11:07:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 139 transitions. [2020-09-25 11:07:37,740 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 139 transitions. Word has length 71 [2020-09-25 11:07:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:37,740 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 139 transitions. [2020-09-25 11:07:37,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:07:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 139 transitions. [2020-09-25 11:07:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 11:07:37,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:37,743 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:37,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:07:37,744 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:37,744 INFO L82 PathProgramCache]: Analyzing trace with hash 452106143, now seen corresponding path program 1 times [2020-09-25 11:07:37,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:37,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052652155] [2020-09-25 11:07:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:42,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 11:07:42,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:07:42,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:07:42,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:42,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 11:07:42,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:42,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:42,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:42,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:42,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:42,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:42,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:42,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:42,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:42,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:44,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:44,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:46,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:47,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 11:07:47,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 11:07:47,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:07:47,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:47,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:07:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 11:07:47,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:47,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:47,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:47,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:07:50,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:07:50,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2624 [2020-09-25 11:07:50,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:07:50,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:50,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:50,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:50,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:50,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 11:07:50,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:50,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:50,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:50,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:50,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:50,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:50,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:50,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:50,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:50,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:50,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:50,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:50,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:50,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:50,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:50,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:50,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:50,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:50,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:50,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:50,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:07:50,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:50,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:50,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:50,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:07:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:50,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:50,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 11:07:50,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:50,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:50,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:50,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:50,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:50,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:07:50,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 41 proven. 23 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 11:07:50,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052652155] [2020-09-25 11:07:50,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:50,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:07:50,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140109323] [2020-09-25 11:07:50,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:07:50,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:50,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:07:50,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:07:50,892 INFO L87 Difference]: Start difference. First operand 92 states and 139 transitions. Second operand 12 states. [2020-09-25 11:07:51,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:51,350 INFO L93 Difference]: Finished difference Result 262 states and 474 transitions. [2020-09-25 11:07:51,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:07:51,352 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2020-09-25 11:07:51,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:51,356 INFO L225 Difference]: With dead ends: 262 [2020-09-25 11:07:51,356 INFO L226 Difference]: Without dead ends: 176 [2020-09-25 11:07:51,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:07:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-25 11:07:51,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 134. [2020-09-25 11:07:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 11:07:51,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 195 transitions. [2020-09-25 11:07:51,383 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 195 transitions. Word has length 87 [2020-09-25 11:07:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:51,384 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 195 transitions. [2020-09-25 11:07:51,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:07:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 195 transitions. [2020-09-25 11:07:51,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 11:07:51,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:51,392 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:51,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:07:51,395 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:51,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:51,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1157905540, now seen corresponding path program 2 times [2020-09-25 11:07:51,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:51,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920359692] [2020-09-25 11:07:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:56,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 11:07:56,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-09-25 11:07:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:07:56,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:56,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:07:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:07:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:07:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:56,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:56,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:56,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:56,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:56,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:56,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:56,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:56,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:56,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:56,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking...