/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:18:55,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:18:55,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:18:55,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:18:55,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:18:55,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:18:55,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:18:55,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:18:55,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:18:55,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:18:55,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:18:55,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:18:55,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:18:55,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:18:55,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:18:55,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:18:55,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:18:55,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:18:55,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:18:55,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:18:55,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:18:55,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:18:55,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:18:55,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:18:55,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:18:55,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:18:55,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:18:55,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:18:55,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:18:55,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:18:55,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:18:55,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:18:55,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:18:55,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:18:55,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:18:55,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:18:55,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:18:55,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:18:55,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:18:55,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:18:55,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:18:55,353 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 04:18:55,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:18:55,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:18:55,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:18:55,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:18:55,410 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:18:55,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:18:55,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:18:55,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:18:55,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:18:55,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:18:55,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:18:55,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:18:55,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:18:55,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:18:55,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:18:55,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:18:55,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:18:55,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:18:55,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:18:55,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:18:55,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:18:55,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:18:55,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:18:55,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:18:55,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:18:55,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:18:55,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:18:55,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:18:55,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:18:55,417 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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:18:55,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:18:55,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:18:55,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:18:55,973 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:18:55,973 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:18:55,975 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-2.c [2020-09-25 04:18:56,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4400f5ceb/81470370728c45319406e0c5e99bd6e9/FLAG40af47d94 [2020-09-25 04:18:56,606 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:18:56,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_25-2.c [2020-09-25 04:18:56,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4400f5ceb/81470370728c45319406e0c5e99bd6e9/FLAG40af47d94 [2020-09-25 04:18:56,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4400f5ceb/81470370728c45319406e0c5e99bd6e9 [2020-09-25 04:18:56,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:18:56,960 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:18:56,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:18:56,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:18:56,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:18:56,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:18:56" (1/1) ... [2020-09-25 04:18:56,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:56, skipping insertion in model container [2020-09-25 04:18:56,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:18:56" (1/1) ... [2020-09-25 04:18:56,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:18:57,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:18:57,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:18:57,232 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:18:57,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:18:57,267 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:18:57,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:57 WrapperNode [2020-09-25 04:18:57,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:18:57,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:18:57,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:18:57,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:18:57,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:57" (1/1) ... [2020-09-25 04:18:57,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:57" (1/1) ... [2020-09-25 04:18:57,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:57" (1/1) ... [2020-09-25 04:18:57,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:57" (1/1) ... [2020-09-25 04:18:57,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:57" (1/1) ... [2020-09-25 04:18:57,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:57" (1/1) ... [2020-09-25 04:18:57,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:57" (1/1) ... [2020-09-25 04:18:57,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:18:57,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:18:57,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:18:57,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:18:57,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:57" (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 04:18:57,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:18:57,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:18:57,460 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 04:18:57,460 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 04:18:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:18:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:18:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:18:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 04:18:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 04:18:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:18:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:18:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:18:57,708 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:18:57,708 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:18:57,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:18:57 BoogieIcfgContainer [2020-09-25 04:18:57,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:18:57,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:18:57,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:18:57,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:18:57,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:18:56" (1/3) ... [2020-09-25 04:18:57,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:18:57, skipping insertion in model container [2020-09-25 04:18:57,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:57" (2/3) ... [2020-09-25 04:18:57,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:18:57, skipping insertion in model container [2020-09-25 04:18:57,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:18:57" (3/3) ... [2020-09-25 04:18:57,751 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_25-2.c [2020-09-25 04:18:57,776 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:18:57,787 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:18:57,810 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:18:57,841 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:18:57,841 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:18:57,841 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:18:57,841 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:18:57,841 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:18:57,841 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:18:57,842 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:18:57,842 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:18:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 04:18:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 04:18:57,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:57,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:57,874 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:57,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:57,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 04:18:57,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:57,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932208191] [2020-09-25 04:18:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:18:58,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:58,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 04:18:58,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:18:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:18:58,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:58,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:58,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:58,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:58,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:58,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:18:58,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:58,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:58,226 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 04:18:58,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932208191] [2020-09-25 04:18:58,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:58,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:18:58,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136260031] [2020-09-25 04:18:58,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:18:58,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:58,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:18:58,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:18:58,255 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 04:18:58,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:58,390 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 04:18:58,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:18:58,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 04:18:58,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:58,405 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:18:58,406 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 04:18:58,410 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 04:18:58,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 04:18:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 04:18:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:18:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:18:58,464 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 04:18:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:58,464 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:18:58,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:18:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:18:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 04:18:58,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:58,467 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 04:18:58,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:18:58,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:58,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:58,468 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 04:18:58,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:58,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905521492] [2020-09-25 04:18:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:18:58,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:58,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 04:18:58,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:58,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:58,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:58,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:58,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:58,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:58,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:58,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:58,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:58,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:58,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:18:58,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:58,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:58,651 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 04:18:58,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905521492] [2020-09-25 04:18:58,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:58,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:18:58,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539859680] [2020-09-25 04:18:58,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:18:58,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:58,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:18:58,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:18:58,655 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 04:18:58,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:58,724 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 04:18:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:18:58,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 04:18:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:58,727 INFO L225 Difference]: With dead ends: 50 [2020-09-25 04:18:58,727 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 04:18:58,728 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 04:18:58,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 04:18:58,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 04:18:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:18:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:18:58,739 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 04:18:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:58,739 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:18:58,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:18:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:18:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:18:58,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:58,742 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 04:18:58,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:18:58,742 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:58,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:58,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 04:18:58,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:58,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89647888] [2020-09-25 04:18:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:59,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:18:59,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:18:59,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-09-25 04:18:59,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:59,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:59,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:59,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:59,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:18:59,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:18:59,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:59,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:59,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:59,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:59,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:59,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:59,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:59,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:59,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:59,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:59,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:59,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:59,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:59,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:18:59,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 04:18:59,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:59,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:18:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:59,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:59,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:59,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:59,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:59,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:18:59,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:59,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:59,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:59,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:59,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:59,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:59,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:59,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:59,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:59,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:59,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:18:59,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:59,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:59,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:59,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:18:59,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89647888] [2020-09-25 04:18:59,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:59,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:18:59,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967274364] [2020-09-25 04:18:59,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:18:59,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:59,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:18:59,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:59,725 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 04:18:59,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:59,896 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 04:18:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:18:59,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 04:18:59,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:59,902 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:18:59,903 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 04:18:59,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:18:59,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 04:18:59,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 04:18:59,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:18:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 04:18:59,932 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 04:18:59,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:59,932 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 04:18:59,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:18:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 04:18:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:18:59,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:59,938 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 04:18:59,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:18:59,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:59,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:59,939 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 04:18:59,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:59,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359290847] [2020-09-25 04:18:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:59,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:00,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:19:00,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:00,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-09-25 04:19:00,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:00,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:00,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:00,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:00,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:19:00,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:00,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:00,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:00,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:00,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:00,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:00,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:00,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:00,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:00,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:00,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:00,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:19:00,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:19:00,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-09-25 04:19:00,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:00,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:19:00,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:01,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:01,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:01,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:01,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:01,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:19:01,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:01,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:01,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:01,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:01,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:19:01,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:01,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:01,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:01,077 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 04:19:01,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359290847] [2020-09-25 04:19:01,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:01,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:01,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571501301] [2020-09-25 04:19:01,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:01,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:01,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:01,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:01,080 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 04:19:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:01,202 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 04:19:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:01,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 04:19:01,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:01,205 INFO L225 Difference]: With dead ends: 110 [2020-09-25 04:19:01,206 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 04:19:01,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:01,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 04:19:01,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 04:19:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 04:19:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 04:19:01,219 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 04:19:01,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:01,220 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 04:19:01,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:01,220 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 04:19:01,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 04:19:01,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:01,223 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 04:19:01,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:19:01,224 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:01,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:01,224 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 04:19:01,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:01,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143814768] [2020-09-25 04:19:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:06,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:19:06,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:19:06,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 04:19:06,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:06,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:06,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:19:06,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:06,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:06,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:06,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:06,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:06,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:19:06,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:06,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:06,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:06,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:06,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:06,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:08,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:08,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:19:08,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:19:08,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2449 [2020-09-25 04:19:08,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:08,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:19:08,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:08,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:08,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:08,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:08,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:08,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 04:19:08,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:08,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:19:08,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:08,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:08,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:08,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:08,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:08,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:08,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:08,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:08,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:08,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:08,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:08,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:08,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:08,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:08,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:08,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:08,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:08,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:08,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:08,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:08,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:08,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:08,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:08,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:08,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:08,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:19:08,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:08,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:08,913 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 04:19:08,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143814768] [2020-09-25 04:19:08,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:08,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:08,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689074558] [2020-09-25 04:19:08,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:08,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:08,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:08,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:08,915 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 04:19:09,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:09,044 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2020-09-25 04:19:09,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:19:09,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 04:19:09,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:09,047 INFO L225 Difference]: With dead ends: 66 [2020-09-25 04:19:09,048 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 04:19:09,049 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 04:19:09,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 04:19:09,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 04:19:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 04:19:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 04:19:09,059 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 04:19:09,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:09,060 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 04:19:09,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:09,060 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 04:19:09,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 04:19:09,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:09,063 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 04:19:09,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:19:09,064 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:09,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:09,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 04:19:09,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:09,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805087100] [2020-09-25 04:19:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:09,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:14,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:19:14,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:19:14,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:19:14,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:14,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:19:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:14,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:14,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:14,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:14,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:14,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:14,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:14,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:14,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:14,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:14,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:14,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:19,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 04:19:19,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:19:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:19:19,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:19,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:19:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:19,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 04:19:19,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:19,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:19,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:19,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:19,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:19:19,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:19,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:19,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:19:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:19,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:19,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:19,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:19,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:19,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:19:19,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:19,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:19,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:19,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:19,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:19,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:19,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:19,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:19,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:19,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:19,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:19:19,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:19,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:19,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:19,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:19,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 04:19:19,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:19,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 04:19:19,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:19,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:19,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:19,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:19,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:19,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:19,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:19,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:19,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:19,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:19,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:19,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:19,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:19,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 04:19:19,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805087100] [2020-09-25 04:19:19,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:19,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:19:19,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646703090] [2020-09-25 04:19:19,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:19:19,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:19,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:19:19,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:19:19,285 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 6 states. [2020-09-25 04:19:19,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:19,371 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2020-09-25 04:19:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:19,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 04:19:19,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:19,374 INFO L225 Difference]: With dead ends: 104 [2020-09-25 04:19:19,374 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 04:19:19,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:19,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 04:19:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 04:19:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 04:19:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2020-09-25 04:19:19,386 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 67 [2020-09-25 04:19:19,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:19,387 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2020-09-25 04:19:19,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:19:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2020-09-25 04:19:19,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:19:19,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:19,390 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:19,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:19:19,390 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:19,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:19,391 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 04:19:19,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:19,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709165122] [2020-09-25 04:19:19,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:19,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:19,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:20,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:21,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:22,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:23,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:24,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:19:24,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:19:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:19:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:24,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:19:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:19:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 04:19:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:24,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:24,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:24,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:24,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:24,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:24,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:24,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:24,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:27,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:29,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:19:29,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:19:29,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:19:29,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:29,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:19:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 04:19:29,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:29,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:29,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:29,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:29,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 04:19:29,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:29,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:29,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:19:29,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:29,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:19:29,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:29,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:29,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:29,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:29,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:29,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:19:29,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:29,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:29,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:29,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:29,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:29,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:29,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:29,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:29,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:29,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:29,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:29,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:29,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:29,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:19:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:29,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:29,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:29,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:19:29,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:29,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:29,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:19:29,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:29,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:29,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:19:29,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:29,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:29,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:29,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:29,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:29,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:29,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:29,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:29,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:29,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:29,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 04:19:29,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709165122] [2020-09-25 04:19:29,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:29,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:19:29,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585249574] [2020-09-25 04:19:29,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:19:29,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:29,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:19:29,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:29,829 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand 9 states. [2020-09-25 04:19:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:30,078 INFO L93 Difference]: Finished difference Result 138 states and 198 transitions. [2020-09-25 04:19:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:19:30,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 04:19:30,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:30,081 INFO L225 Difference]: With dead ends: 138 [2020-09-25 04:19:30,081 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 04:19:30,082 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 04:19:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 04:19:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2020-09-25 04:19:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 04:19:30,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2020-09-25 04:19:30,096 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 69 [2020-09-25 04:19:30,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:30,096 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2020-09-25 04:19:30,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:19:30,097 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2020-09-25 04:19:30,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 04:19:30,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:30,098 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:19:30,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:19:30,099 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:30,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:30,099 INFO L82 PathProgramCache]: Analyzing trace with hash 261409208, now seen corresponding path program 2 times [2020-09-25 04:19:30,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:30,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128182990] [2020-09-25 04:19:30,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:30,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:31,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:35,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 04:19:35,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:19:35,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:19:35,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:35,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:35,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 04:19:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:19:35,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:35,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:35,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:35,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:35,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:35,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:35,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:35,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:36,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:36,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 04:19:36,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:19:36,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1849 [2020-09-25 04:19:36,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:36,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:36,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:36,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 04:19:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:19:36,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:36,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:36,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:19:37,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:37,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 04:19:37,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:37,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:19:37,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:19:37,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:37,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:37,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:37,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:19:37,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:37,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:37,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:37,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:37,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:37,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:37,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:19:37,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:37,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 04:19:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:37,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:37,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:19:37,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 04:19:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:37,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:37,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:37,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:37,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:37,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:37,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:37,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:37,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:37,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:37,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:37,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:37,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:37,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 04:19:37,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128182990] [2020-09-25 04:19:37,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:37,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:19:37,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046676200] [2020-09-25 04:19:37,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:19:37,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:37,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:19:37,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:19:37,205 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand 5 states. [2020-09-25 04:19:37,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:37,292 INFO L93 Difference]: Finished difference Result 172 states and 248 transitions. [2020-09-25 04:19:37,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:19:37,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-09-25 04:19:37,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:37,296 INFO L225 Difference]: With dead ends: 172 [2020-09-25 04:19:37,296 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 04:19:37,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 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 04:19:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 04:19:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2020-09-25 04:19:37,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 04:19:37,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 115 transitions. [2020-09-25 04:19:37,322 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 115 transitions. Word has length 70 [2020-09-25 04:19:37,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:37,323 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 115 transitions. [2020-09-25 04:19:37,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:19:37,323 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 115 transitions. [2020-09-25 04:19:37,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 04:19:37,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:37,325 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:19:37,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:19:37,325 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:37,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:37,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1764024667, now seen corresponding path program 1 times [2020-09-25 04:19:37,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:37,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757769298] [2020-09-25 04:19:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:37,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:38,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:39,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:40,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 04:19:42,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 04:19:42,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:19:42,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 04:19:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:19:42,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:42,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:42,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:42,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:42,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:42,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:42,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:42,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:42,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:42,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:42,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:43,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:45,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:46,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:47,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 04:19:47,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 04:19:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:19:47,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:47,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 04:19:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:19:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:47,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:47,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:47,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 04:19:47,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 04:19:47,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:47,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:19:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:19:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:19:47,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:47,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:47,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:47,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:47,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:47,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:19:47,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:47,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:19:47,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:47,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:19:47,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:19:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 04:19:47,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:47,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:19:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:19:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:19:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:47,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:47,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:47,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:19:47,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:47,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:19:47,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:47,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:19:47,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:47,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:19:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:47,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:47,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:47,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:47,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:19:47,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:47,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:19:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:47,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:19:47,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:19:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:47,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:19:48,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:19:48,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-09-25 04:19:48,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 04:19:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:48,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:19:48,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:19:48,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:19:48,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:48,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:48,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:19:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:48,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:48,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:48,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:48,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:19:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:48,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:48,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:48,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:48,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:19:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:48,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:19:48,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:19:48,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:48,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 27 proven. 39 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 04:19:48,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757769298] [2020-09-25 04:19:48,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:19:48,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:19:48,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822625226] [2020-09-25 04:19:48,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:19:48,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:19:48,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:19:48,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:19:48,405 INFO L87 Difference]: Start difference. First operand 84 states and 115 transitions. Second operand 7 states. [2020-09-25 04:19:48,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:19:48,529 INFO L93 Difference]: Finished difference Result 170 states and 250 transitions. [2020-09-25 04:19:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:19:48,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-09-25 04:19:48,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:19:48,531 INFO L225 Difference]: With dead ends: 170 [2020-09-25 04:19:48,532 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 04:19:48,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:19:48,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 04:19:48,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2020-09-25 04:19:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 04:19:48,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 112 transitions. [2020-09-25 04:19:48,559 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 112 transitions. Word has length 103 [2020-09-25 04:19:48,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:19:48,560 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 112 transitions. [2020-09-25 04:19:48,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:19:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 112 transitions. [2020-09-25 04:19:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 04:19:48,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:19:48,570 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:19:48,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:19:48,570 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:19:48,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:19:48,570 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 04:19:48,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:19:48,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536184799] [2020-09-25 04:19:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:19:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:52,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:53,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 04:19:53,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:19:53,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:19:53,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:53,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:53,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:19:53,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 04:19:53,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:19:53,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:53,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:53,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:53,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:53,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:53,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:53,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:53,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:53,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:53,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:53,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking...