/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=0.5 --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_20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:30:23,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:30:23,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:30:23,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:30:23,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:30:23,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:30:23,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:30:23,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:30:23,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:30:23,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:30:23,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:30:23,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:30:23,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:30:23,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:30:23,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:30:23,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:30:23,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:30:23,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:30:23,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:30:23,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:30:23,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:30:23,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:30:23,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:30:23,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:30:23,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:30:23,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:30:23,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:30:23,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:30:23,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:30:23,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:30:23,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:30:23,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:30:23,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:30:23,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:30:23,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:30:23,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:30:23,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:30:23,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:30:23,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:30:23,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:30:23,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:30:23,459 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 14:30:23,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:30:23,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:30:23,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:30:23,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:30:23,512 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:30:23,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:30:23,513 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:30:23,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:30:23,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:30:23,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:30:23,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:30:23,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:30:23,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:30:23,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:30:23,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:30:23,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:30:23,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:30:23,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:30:23,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:30:23,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:30:23,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:30:23,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:30:23,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:30:23,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:30:23,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:30:23,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:30:23,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:30:23,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:30:23,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:30:23,519 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:30:23,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:30:23,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:30:24,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:30:24,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:30:24,007 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:30:24,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_20-2.c [2020-09-25 14:30:24,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba404be5b/c8e141ee6e104e539326fc8ff909d4ba/FLAG253d5d528 [2020-09-25 14:30:24,608 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:30:24,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_20-2.c [2020-09-25 14:30:24,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba404be5b/c8e141ee6e104e539326fc8ff909d4ba/FLAG253d5d528 [2020-09-25 14:30:24,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba404be5b/c8e141ee6e104e539326fc8ff909d4ba [2020-09-25 14:30:24,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:30:24,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:30:24,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:30:24,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:30:24,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:30:24,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:30:24" (1/1) ... [2020-09-25 14:30:24,962 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 02:30:24, skipping insertion in model container [2020-09-25 14:30:24,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:30:24" (1/1) ... [2020-09-25 14:30:24,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:30:24,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:30:25,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:30:25,222 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:30:25,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:30:25,261 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:30:25,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:25 WrapperNode [2020-09-25 14:30:25,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:30:25,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:30:25,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:30:25,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:30:25,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:25" (1/1) ... [2020-09-25 14:30:25,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:25" (1/1) ... [2020-09-25 14:30:25,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:25" (1/1) ... [2020-09-25 14:30:25,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:25" (1/1) ... [2020-09-25 14:30:25,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:25" (1/1) ... [2020-09-25 14:30:25,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:25" (1/1) ... [2020-09-25 14:30:25,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:25" (1/1) ... [2020-09-25 14:30:25,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:30:25,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:30:25,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:30:25,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:30:25,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:25" (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 14:30:25,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:30:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:30:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 14:30:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 14:30:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:30:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:30:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:30:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 14:30:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 14:30:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:30:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:30:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:30:25,689 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:30:25,689 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:30:25,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:30:25 BoogieIcfgContainer [2020-09-25 14:30:25,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:30:25,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:30:25,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:30:25,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:30:25,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:30:24" (1/3) ... [2020-09-25 14:30:25,702 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 02:30:25, skipping insertion in model container [2020-09-25 14:30:25,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:25" (2/3) ... [2020-09-25 14:30:25,702 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 02:30:25, skipping insertion in model container [2020-09-25 14:30:25,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:30:25" (3/3) ... [2020-09-25 14:30:25,705 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-2.c [2020-09-25 14:30:25,717 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:30:25,727 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:30:25,750 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:30:25,802 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:30:25,802 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:30:25,802 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:30:25,803 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:30:25,803 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:30:25,803 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:30:25,803 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:30:25,804 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:30:25,833 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 14:30:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 14:30:25,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:25,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:25,845 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:25,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:25,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 14:30:25,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:25,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188413134] [2020-09-25 14:30:25,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:25,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:26,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:30:26,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:26,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 14:30:26,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:26,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:26,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:30:26,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:30:26,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:26,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:26,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:26,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:26,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:26,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:26,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:26,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:26,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:26,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:26,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:30:26,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:26,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:26,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:26,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:26,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:26,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:26,188 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 14:30:26,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188413134] [2020-09-25 14:30:26,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:26,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:30:26,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2237477] [2020-09-25 14:30:26,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:30:26,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:26,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:30:26,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:30:26,216 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 14:30:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:26,350 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 14:30:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:30:26,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 14:30:26,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:26,367 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:30:26,367 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 14:30:26,372 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 14:30:26,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 14:30:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 14:30:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:30:26,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 14:30:26,433 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 14:30:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:26,434 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 14:30:26,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:30:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 14:30:26,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 14:30:26,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:26,437 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 14:30:26,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:30:26,438 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:26,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:26,438 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 14:30:26,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:26,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468270709] [2020-09-25 14:30:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:26,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:30:26,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:26,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 14:30:26,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:26,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:26,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:26,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:26,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:26,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:26,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:26,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:30:26,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:26,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:26,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:26,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:26,689 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 14:30:26,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468270709] [2020-09-25 14:30:26,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:26,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:30:26,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138338844] [2020-09-25 14:30:26,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:30:26,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:26,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:30:26,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:30:26,694 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 14:30:26,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:26,784 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 14:30:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:30:26,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 14:30:26,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:26,786 INFO L225 Difference]: With dead ends: 50 [2020-09-25 14:30:26,786 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 14:30:26,788 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 14:30:26,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 14:30:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 14:30:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:30:26,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 14:30:26,798 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 14:30:26,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:26,798 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 14:30:26,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:30:26,799 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 14:30:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 14:30:26,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:26,801 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 14:30:26,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:30:26,801 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:26,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:26,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 14:30:26,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:26,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054137469] [2020-09-25 14:30:26,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:26,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:27,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:27,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 14:30:27,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:27,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-09-25 14:30:27,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:27,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:27,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:27,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:30:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:30:27,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:27,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:27,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:27,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:27,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:27,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:27,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:27,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:27,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:27,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:27,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:27,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:27,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:27,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:27,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:27,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-25 14:30:27,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:27,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:27,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:27,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:27,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:27,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:27,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:27,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:27,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:30:27,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:27,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:27,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:27,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:27,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:27,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:27,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:30:27,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:27,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:27,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:27,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:30:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:30:27,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054137469] [2020-09-25 14:30:27,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:27,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:30:27,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886568104] [2020-09-25 14:30:27,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:27,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:27,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:27,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:27,814 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 14:30:28,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:28,025 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2020-09-25 14:30:28,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:30:28,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 14:30:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:28,032 INFO L225 Difference]: With dead ends: 69 [2020-09-25 14:30:28,032 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 14:30:28,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 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 14:30:28,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 14:30:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-09-25 14:30:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 14:30:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2020-09-25 14:30:28,057 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 33 [2020-09-25 14:30:28,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:28,058 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2020-09-25 14:30:28,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:28,058 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2020-09-25 14:30:28,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 14:30:28,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:28,061 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:30:28,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:30:28,061 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:28,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:28,061 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-25 14:30:28,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:28,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109105673] [2020-09-25 14:30:28,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:28,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:28,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:28,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:30:28,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-25 14:30:28,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:28,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:30:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:28,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:28,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:28,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:28,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:28,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:28,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:28,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:28,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:30:28,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:28,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:28,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:28,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:30:28,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:28,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-25 14:30:28,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:28,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:28,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:30:28,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:28,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:28,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:28,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:28,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:28,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:28,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:30:28,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:28,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:30:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:28,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:28,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:28,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:28,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:30:28,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:28,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:28,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:28,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:30:28,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109105673] [2020-09-25 14:30:28,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:28,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:30:28,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712161638] [2020-09-25 14:30:28,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:28,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:28,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:28,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:28,867 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 7 states. [2020-09-25 14:30:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:29,014 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2020-09-25 14:30:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:30:29,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 14:30:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:29,017 INFO L225 Difference]: With dead ends: 73 [2020-09-25 14:30:29,017 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 14:30:29,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 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 14:30:29,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 14:30:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-25 14:30:29,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 14:30:29,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2020-09-25 14:30:29,029 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 34 [2020-09-25 14:30:29,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:29,029 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2020-09-25 14:30:29,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:29,030 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2020-09-25 14:30:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:30:29,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:29,032 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 14:30:29,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:30:29,033 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:29,033 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 14:30:29,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:29,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550093361] [2020-09-25 14:30:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:29,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:29,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:30:29,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:30:29,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-09-25 14:30:29,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:29,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:30:29,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:30:29,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:29,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:29,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:29,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:29,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:29,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:29,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:29,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:29,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:29,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:29,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:29,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:30:29,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 14:30:29,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:29,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:30:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:30:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:29,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:29,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:30:29,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:29,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:30:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:29,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:30:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:29,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:29,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:29,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:29,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:30:29,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:29,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:29,719 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 14:30:29,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550093361] [2020-09-25 14:30:29,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:29,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:30:29,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442929614] [2020-09-25 14:30:29,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:29,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:29,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:29,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:29,721 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 7 states. [2020-09-25 14:30:29,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:29,860 INFO L93 Difference]: Finished difference Result 124 states and 164 transitions. [2020-09-25 14:30:29,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:30:29,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 14:30:29,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:29,863 INFO L225 Difference]: With dead ends: 124 [2020-09-25 14:30:29,863 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 14:30:29,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:30:29,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 14:30:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2020-09-25 14:30:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 14:30:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 14:30:29,873 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 35 [2020-09-25 14:30:29,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:29,874 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 14:30:29,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:29,874 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 14:30:29,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 14:30:29,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:29,876 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 14:30:29,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:30:29,877 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:29,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:29,877 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 14:30:29,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:29,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220422627] [2020-09-25 14:30:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:30,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:30,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:34,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:34,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 14:30:34,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:30:34,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:30:34,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:34,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:34,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:30:34,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:34,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:34,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:34,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:34,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:34,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:34,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:34,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:34,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:34,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:34,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:35,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:38,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:30:38,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:30:38,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3166 [2020-09-25 14:30:38,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:38,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:30:38,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:38,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:38,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:38,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 14:30:38,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:38,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:38,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:38,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:38,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:38,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:38,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:38,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:38,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:38,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:38,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:30:38,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:38,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:38,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:38,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:38,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:38,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:38,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:38,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:38,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:38,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:38,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:30:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:38,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:38,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:38,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:30:38,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:38,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:38,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:38,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:38,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:30:38,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:38,390 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 14:30:38,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220422627] [2020-09-25 14:30:38,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:38,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:30:38,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924628331] [2020-09-25 14:30:38,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:38,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:38,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:38,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:38,393 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 7 states. [2020-09-25 14:30:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:38,538 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-09-25 14:30:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:30:38,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 14:30:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:38,541 INFO L225 Difference]: With dead ends: 66 [2020-09-25 14:30:38,544 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 14:30:38,544 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 14:30:38,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 14:30:38,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 14:30:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 14:30:38,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 14:30:38,562 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2020-09-25 14:30:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:38,563 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 14:30:38,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 14:30:38,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 14:30:38,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:38,567 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 14:30:38,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:30:38,567 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:38,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:38,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 14:30:38,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:38,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969164143] [2020-09-25 14:30:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:38,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:39,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:30:43,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:30:43,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:30:43,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 14:30:43,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:43,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:43,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:43,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:43,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:43,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:47,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:47,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:47,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:30:48,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:30:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:30:48,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 14:30:48,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:48,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:48,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 14:30:48,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:48,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:48,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:48,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:48,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:48,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:48,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:30:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:48,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:48,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 14:30:48,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:30:48,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:30:48,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:48,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:48,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:30:48,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:48,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:48,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:48,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:30:48,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 14:30:48,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969164143] [2020-09-25 14:30:48,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:48,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:30:48,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567368656] [2020-09-25 14:30:48,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:30:48,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:48,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:30:48,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:30:48,992 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 9 states. [2020-09-25 14:30:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:49,174 INFO L93 Difference]: Finished difference Result 82 states and 108 transitions. [2020-09-25 14:30:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:30:49,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 14:30:49,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:49,177 INFO L225 Difference]: With dead ends: 82 [2020-09-25 14:30:49,177 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 14:30:49,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:30:49,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 14:30:49,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-09-25 14:30:49,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 14:30:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2020-09-25 14:30:49,202 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 67 [2020-09-25 14:30:49,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:49,203 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2020-09-25 14:30:49,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:30:49,203 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2020-09-25 14:30:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 14:30:49,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:49,206 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 14:30:49,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:30:49,208 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:49,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:49,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 14:30:49,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:49,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777469765] [2020-09-25 14:30:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:49,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:54,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 14:30:54,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:30:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:30:54,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:54,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:30:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:54,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:54,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:54,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:54,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:54,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:54,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:54,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:54,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:30:59,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:30:59,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:30:59,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:30:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:30:59,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:30:59,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:59,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 14:30:59,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:30:59,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:59,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:59,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:30:59,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:30:59,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:30:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:59,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:59,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:30:59,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 14:30:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:00,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:31:00,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:31:00,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-09-25 14:31:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:00,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:31:00,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:00,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:00,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:00,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:00,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:00,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:31:00,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:00,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:31:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:00,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:31:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:00,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:00,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:00,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:31:00,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:00,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:31:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 14:31:00,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777469765] [2020-09-25 14:31:00,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:00,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:31:00,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318236458] [2020-09-25 14:31:00,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:31:00,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:00,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:31:00,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:31:00,202 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand 10 states. [2020-09-25 14:31:00,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:00,422 INFO L93 Difference]: Finished difference Result 162 states and 257 transitions. [2020-09-25 14:31:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:31:00,423 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-09-25 14:31:00,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:00,425 INFO L225 Difference]: With dead ends: 162 [2020-09-25 14:31:00,425 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 14:31:00,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:31:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 14:31:00,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-25 14:31:00,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 14:31:00,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 138 transitions. [2020-09-25 14:31:00,441 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 138 transitions. Word has length 71 [2020-09-25 14:31:00,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:00,442 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 138 transitions. [2020-09-25 14:31:00,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:31:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 138 transitions. [2020-09-25 14:31:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 14:31:00,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:00,445 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:00,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:31:00,445 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:00,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 14:31:00,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:00,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297155316] [2020-09-25 14:31:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:01,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:01,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:03,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:03,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:04,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:04,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:05,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 14:31:05,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 14:31:05,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:31:05,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:05,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:05,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:31:05,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:31:05,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:31:05,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:05,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:05,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:05,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:05,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:05,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:05,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:05,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:05,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:05,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:05,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:05,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:10,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 14:31:10,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-09-25 14:31:10,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:31:10,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:10,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:31:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:31:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:31:10,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:10,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:10,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:11,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:13,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:13,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:31:13,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:31:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3339 [2020-09-25 14:31:13,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:13,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:31:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:13,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:13,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:13,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:13,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:13,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:13,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 14:31:13,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:13,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:13,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:13,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:13,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:13,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:13,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:13,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:13,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:13,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:13,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:13,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:13,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:13,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:13,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:13,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:13,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:13,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:13,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:13,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:13,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:13,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:13,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:13,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:13,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:13,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:13,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:13,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:31:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:13,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:13,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:13,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:13,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:31:13,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:13,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:31:13,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:14,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:31:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:14,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:14,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:14,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:14,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:19,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 14:31:19,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:31:19,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:31:19,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:19,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 14:31:19,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:19,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:19,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:19,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:31:19,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:31:19,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:19,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:31:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:19,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:19,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:31:19,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:19,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:31:19,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:19,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:19,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:19,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:19,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:19,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:19,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:19,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:19,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:19,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:19,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:19,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:19,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:19,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:31:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:19,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:19,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:19,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:31:19,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:19,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:19,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:19,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:31:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:19,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:19,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:19,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:19,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:19,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:19,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:19,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:19,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:31:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:19,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:19,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:19,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:19,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:31:19,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:19,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:31:19,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 66 proven. 47 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-09-25 14:31:19,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297155316] [2020-09-25 14:31:19,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:19,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:31:19,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596776714] [2020-09-25 14:31:19,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:31:19,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:19,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:31:19,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:31:19,197 INFO L87 Difference]: Start difference. First operand 98 states and 138 transitions. Second operand 10 states. [2020-09-25 14:31:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:19,446 INFO L93 Difference]: Finished difference Result 230 states and 384 transitions. [2020-09-25 14:31:19,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:31:19,447 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 122 [2020-09-25 14:31:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:19,449 INFO L225 Difference]: With dead ends: 230 [2020-09-25 14:31:19,450 INFO L226 Difference]: Without dead ends: 138 [2020-09-25 14:31:19,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:31:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-25 14:31:19,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-25 14:31:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-25 14:31:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 206 transitions. [2020-09-25 14:31:19,488 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 206 transitions. Word has length 122 [2020-09-25 14:31:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:19,490 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 206 transitions. [2020-09-25 14:31:19,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:31:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 206 transitions. [2020-09-25 14:31:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 14:31:19,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:19,493 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 14:31:19,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:31:19,501 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:19,501 INFO L82 PathProgramCache]: Analyzing trace with hash 764524697, now seen corresponding path program 1 times [2020-09-25 14:31:19,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:19,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384293202] [2020-09-25 14:31:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:19,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking...