/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/eca-rers2012/Problem10_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:30:47,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:30:47,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:30:47,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:30:47,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:30:47,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:30:47,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:30:47,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:30:47,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:30:47,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:30:47,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:30:47,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:30:47,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:30:47,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:30:47,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:30:47,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:30:47,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:30:47,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:30:47,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:30:47,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:30:47,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:30:47,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:30:47,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:30:47,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:30:47,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:30:47,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:30:47,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:30:47,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:30:47,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:30:47,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:30:47,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:30:47,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:30:47,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:30:47,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:30:47,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:30:47,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:30:47,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:30:47,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:30:47,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:30:47,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:30:47,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:30:47,381 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 04:30:47,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:30:47,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:30:47,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:30:47,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:30:47,408 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:30:47,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:30:47,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:30:47,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:30:47,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:30:47,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:30:47,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:30:47,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:30:47,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:30:47,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:30:47,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:30:47,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:30:47,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:30:47,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:30:47,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:30:47,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:30:47,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:30:47,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:30:47,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:30:47,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:30:47,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:30:47,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:30:47,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:30:47,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:30:47,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:30:47,413 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 04:30:47,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:30:47,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:30:47,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:30:47,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:30:47,893 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:30:47,894 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 04:30:47,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb7d6b5cc/9cbb9b2000ad42188704211ba2c1d274/FLAG6a15796ba [2020-09-25 04:30:48,690 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:30:48,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 04:30:48,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb7d6b5cc/9cbb9b2000ad42188704211ba2c1d274/FLAG6a15796ba [2020-09-25 04:30:48,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb7d6b5cc/9cbb9b2000ad42188704211ba2c1d274 [2020-09-25 04:30:48,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:30:48,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:30:48,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:48,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:30:48,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:30:48,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:48" (1/1) ... [2020-09-25 04:30:48,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea0c575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:48, skipping insertion in model container [2020-09-25 04:30:48,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:48" (1/1) ... [2020-09-25 04:30:48,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:30:49,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:30:49,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:49,528 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:30:49,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:49,796 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:30:49,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:49 WrapperNode [2020-09-25 04:30:49,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:49,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:30:49,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:30:49,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:30:49,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:49" (1/1) ... [2020-09-25 04:30:49,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:49" (1/1) ... [2020-09-25 04:30:49,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:49" (1/1) ... [2020-09-25 04:30:49,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:49" (1/1) ... [2020-09-25 04:30:49,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:49" (1/1) ... [2020-09-25 04:30:49,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:49" (1/1) ... [2020-09-25 04:30:49,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:49" (1/1) ... [2020-09-25 04:30:49,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:30:49,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:30:49,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:30:49,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:30:49,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:49" (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 04:30:50,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:30:50,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:30:50,054 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:30:50,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:30:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:30:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:30:50,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:30:50,057 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:30:50,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:30:50,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:30:50,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:30:51,599 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:30:51,599 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:30:51,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:51 BoogieIcfgContainer [2020-09-25 04:30:51,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:30:51,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:30:51,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:30:51,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:30:51,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:30:48" (1/3) ... [2020-09-25 04:30:51,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaf01c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:51, skipping insertion in model container [2020-09-25 04:30:51,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:49" (2/3) ... [2020-09-25 04:30:51,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaf01c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:51, skipping insertion in model container [2020-09-25 04:30:51,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:51" (3/3) ... [2020-09-25 04:30:51,619 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2020-09-25 04:30:51,631 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:30:51,644 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:30:51,667 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:30:51,703 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:30:51,703 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:30:51,703 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:30:51,704 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:30:51,704 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:30:51,704 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:30:51,704 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:30:51,704 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:30:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:30:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 04:30:51,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:51,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:51,749 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:51,758 INFO L82 PathProgramCache]: Analyzing trace with hash -495691305, now seen corresponding path program 1 times [2020-09-25 04:30:51,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:51,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235948237] [2020-09-25 04:30:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:52,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:52,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:52,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:52,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:52,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 04:30:52,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:30:52,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-09-25 04:30:52,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:52,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:52,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:52,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:30:52,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 04:30:52,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 28 [2020-09-25 04:30:53,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:53,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:53,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:53,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:53,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:53,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:30:53,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:53,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:30:53,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:53,082 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 04:30:53,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235948237] [2020-09-25 04:30:53,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:53,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:30:53,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809991802] [2020-09-25 04:30:53,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:30:53,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:53,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:30:53,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:30:53,119 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:30:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:55,318 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-25 04:30:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:30:55,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 04:30:55,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:55,344 INFO L225 Difference]: With dead ends: 1163 [2020-09-25 04:30:55,344 INFO L226 Difference]: Without dead ends: 634 [2020-09-25 04:30:55,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-25 04:30:55,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-25 04:30:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-25 04:30:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-25 04:30:55,456 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 54 [2020-09-25 04:30:55,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:55,457 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-25 04:30:55,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:30:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-25 04:30:55,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 04:30:55,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:55,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:55,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:30:55,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:55,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:55,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1783140025, now seen corresponding path program 1 times [2020-09-25 04:30:55,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:55,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831641598] [2020-09-25 04:30:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:55,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:55,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:55,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:55,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:59,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:59,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 04:30:59,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:59,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4296 [2020-09-25 04:30:59,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:59,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:59,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:59,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:30:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 04:30:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:59,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:59,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:59,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:59,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:59,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:59,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:30:59,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:59,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:00,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:00,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:00,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 04:31:00,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:00,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:00,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:00,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:31:00,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:00,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831641598] [2020-09-25 04:31:00,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:00,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:00,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546788955] [2020-09-25 04:31:00,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:00,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:00,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:00,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:00,124 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 5 states. [2020-09-25 04:31:01,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:01,881 INFO L93 Difference]: Finished difference Result 1461 states and 1941 transitions. [2020-09-25 04:31:01,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:01,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 04:31:01,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:01,890 INFO L225 Difference]: With dead ends: 1461 [2020-09-25 04:31:01,890 INFO L226 Difference]: Without dead ends: 896 [2020-09-25 04:31:01,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:01,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-25 04:31:01,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 884. [2020-09-25 04:31:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-25 04:31:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1146 transitions. [2020-09-25 04:31:01,948 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1146 transitions. Word has length 133 [2020-09-25 04:31:01,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:01,949 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1146 transitions. [2020-09-25 04:31:01,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:01,950 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1146 transitions. [2020-09-25 04:31:01,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 04:31:01,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:01,956 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:01,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:01,956 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:01,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:01,957 INFO L82 PathProgramCache]: Analyzing trace with hash -27995731, now seen corresponding path program 1 times [2020-09-25 04:31:01,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:01,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2959337] [2020-09-25 04:31:01,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:02,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:03,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:03,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 04:31:03,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:31:03,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1401 [2020-09-25 04:31:03,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:03,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:03,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:03,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 04:31:03,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 04:31:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:03,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:03,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:03,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:03,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:03,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:03,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:03,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:03,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:03,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:03,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:03,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:31:03,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:03,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 04:31:03,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:03,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:03,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:03,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2959337] [2020-09-25 04:31:03,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:03,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:03,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537616191] [2020-09-25 04:31:03,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:03,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:03,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:03,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:03,730 INFO L87 Difference]: Start difference. First operand 884 states and 1146 transitions. Second operand 5 states. [2020-09-25 04:31:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:05,294 INFO L93 Difference]: Finished difference Result 2393 states and 3232 transitions. [2020-09-25 04:31:05,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:05,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-25 04:31:05,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:05,309 INFO L225 Difference]: With dead ends: 2393 [2020-09-25 04:31:05,309 INFO L226 Difference]: Without dead ends: 1524 [2020-09-25 04:31:05,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2020-09-25 04:31:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1494. [2020-09-25 04:31:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-09-25 04:31:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1852 transitions. [2020-09-25 04:31:05,365 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1852 transitions. Word has length 145 [2020-09-25 04:31:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:05,366 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1852 transitions. [2020-09-25 04:31:05,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1852 transitions. [2020-09-25 04:31:05,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 04:31:05,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:05,374 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:05,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:05,374 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:05,375 INFO L82 PathProgramCache]: Analyzing trace with hash 480632245, now seen corresponding path program 1 times [2020-09-25 04:31:05,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:05,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519806520] [2020-09-25 04:31:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:05,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:06,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:07,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:10,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:10,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:10,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 04:31:10,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:10,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-09-25 04:31:10,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:10,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:10,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:10,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:31:10,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:31:10,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:10,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:10,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:10,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:10,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:10,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:10,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:10,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:10,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:10,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:10,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:10,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:10,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:10,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:10,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 04:31:10,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:10,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:10,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:31:10,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:10,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:31:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:10,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:10,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:10,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:31:10,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:10,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 04:31:10,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:10,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 04:31:10,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:11,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519806520] [2020-09-25 04:31:11,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:11,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:31:11,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74223888] [2020-09-25 04:31:11,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:31:11,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:11,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:31:11,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:31:11,096 INFO L87 Difference]: Start difference. First operand 1494 states and 1852 transitions. Second operand 8 states. [2020-09-25 04:31:14,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:14,725 INFO L93 Difference]: Finished difference Result 4401 states and 5811 transitions. [2020-09-25 04:31:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 04:31:14,729 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-09-25 04:31:14,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:14,751 INFO L225 Difference]: With dead ends: 4401 [2020-09-25 04:31:14,751 INFO L226 Difference]: Without dead ends: 2922 [2020-09-25 04:31:14,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:31:14,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-09-25 04:31:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2736. [2020-09-25 04:31:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2020-09-25 04:31:14,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3427 transitions. [2020-09-25 04:31:14,872 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3427 transitions. Word has length 222 [2020-09-25 04:31:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:14,873 INFO L479 AbstractCegarLoop]: Abstraction has 2736 states and 3427 transitions. [2020-09-25 04:31:14,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:31:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3427 transitions. [2020-09-25 04:31:14,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 04:31:14,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:14,880 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:14,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:14,880 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:14,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:14,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1101697427, now seen corresponding path program 1 times [2020-09-25 04:31:14,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:14,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87044671] [2020-09-25 04:31:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:14,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:16,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:19,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:19,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 04:31:19,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:31:19,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 04:31:19,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:19,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:19,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:19,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:31:19,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 04:31:19,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:20,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:20,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:20,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:20,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:20,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:20,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:20,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 04:31:20,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:31:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:31:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:31:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:31:20,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:20,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 04:31:20,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:20,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 04:31:20,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:31:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:20,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87044671] [2020-09-25 04:31:20,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:20,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:20,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208156204] [2020-09-25 04:31:20,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:20,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:20,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:20,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:20,522 INFO L87 Difference]: Start difference. First operand 2736 states and 3427 transitions. Second operand 7 states. [2020-09-25 04:31:22,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:22,807 INFO L93 Difference]: Finished difference Result 5977 states and 7634 transitions. [2020-09-25 04:31:22,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:31:22,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-09-25 04:31:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:22,830 INFO L225 Difference]: With dead ends: 5977 [2020-09-25 04:31:22,830 INFO L226 Difference]: Without dead ends: 3266 [2020-09-25 04:31:22,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:31:22,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2020-09-25 04:31:22,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 2916. [2020-09-25 04:31:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2916 states. [2020-09-25 04:31:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 3522 transitions. [2020-09-25 04:31:22,970 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 3522 transitions. Word has length 225 [2020-09-25 04:31:22,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:22,970 INFO L479 AbstractCegarLoop]: Abstraction has 2916 states and 3522 transitions. [2020-09-25 04:31:22,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:22,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 3522 transitions. [2020-09-25 04:31:22,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 04:31:22,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:22,977 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:22,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:31:22,978 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:22,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:22,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1828729346, now seen corresponding path program 1 times [2020-09-25 04:31:22,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:22,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232221829] [2020-09-25 04:31:22,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:23,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:23,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:26,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:28,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 04:31:28,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:31:28,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:28,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 04:31:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 04:31:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:28,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:28,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:28,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:28,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:28,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:31:28,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:28,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:28,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:28,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:28,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:28,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:28,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 04:31:28,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 04:31:28,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:28,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 04:31:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:28,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 04:31:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:28,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:28,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:31:28,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:28,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 04:31:28,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:28,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:28,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 04:31:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:28,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232221829] [2020-09-25 04:31:28,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:28,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:28,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548561999] [2020-09-25 04:31:28,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:28,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:28,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:28,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:28,581 INFO L87 Difference]: Start difference. First operand 2916 states and 3522 transitions. Second operand 7 states. [2020-09-25 04:31:31,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:31,392 INFO L93 Difference]: Finished difference Result 6894 states and 8488 transitions. [2020-09-25 04:31:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:31:31,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-09-25 04:31:31,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:31,415 INFO L225 Difference]: With dead ends: 6894 [2020-09-25 04:31:31,416 INFO L226 Difference]: Without dead ends: 4003 [2020-09-25 04:31:31,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:31:31,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4003 states. [2020-09-25 04:31:31,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4003 to 3945. [2020-09-25 04:31:31,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3945 states. [2020-09-25 04:31:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3945 states to 3945 states and 4876 transitions. [2020-09-25 04:31:31,584 INFO L78 Accepts]: Start accepts. Automaton has 3945 states and 4876 transitions. Word has length 232 [2020-09-25 04:31:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:31,585 INFO L479 AbstractCegarLoop]: Abstraction has 3945 states and 4876 transitions. [2020-09-25 04:31:31,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:31,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3945 states and 4876 transitions. [2020-09-25 04:31:31,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 04:31:31,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:31,593 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:31,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:31:31,593 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:31,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:31,594 INFO L82 PathProgramCache]: Analyzing trace with hash 841975191, now seen corresponding path program 1 times [2020-09-25 04:31:31,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:31,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124291901] [2020-09-25 04:31:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:31,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:31,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:31,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking...