/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/Problem02_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:28:37,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:28:37,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:28:37,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:28:37,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:28:37,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:28:37,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:28:37,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:28:37,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:28:37,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:28:37,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:28:37,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:28:37,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:28:37,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:28:37,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:28:37,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:28:37,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:28:37,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:28:37,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:28:37,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:28:37,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:28:37,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:28:37,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:28:37,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:28:37,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:28:37,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:28:37,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:28:37,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:28:37,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:28:37,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:28:37,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:28:37,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:28:37,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:28:37,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:28:37,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:28:37,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:28:37,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:28:37,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:28:37,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:28:37,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:28:37,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:28:37,845 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 04:28:37,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:28:37,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:28:37,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:28:37,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:28:37,881 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:28:37,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:28:37,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:28:37,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:28:37,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:28:37,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:28:37,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:28:37,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:28:37,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:28:37,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:28:37,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:28:37,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:28:37,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:28:37,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:28:37,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:28:37,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:28:37,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:28:37,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:37,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:28:37,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:28:37,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:28:37,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:28:37,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:28:37,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:28:37,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:28:37,886 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 04:28:38,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:28:38,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:28:38,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:28:38,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:28:38,400 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:28:38,402 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 04:28:38,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b442f204/fee0e4f27f92492181e0b60f105f0aa7/FLAGa5655b165 [2020-09-25 04:28:39,180 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:28:39,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 04:28:39,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b442f204/fee0e4f27f92492181e0b60f105f0aa7/FLAGa5655b165 [2020-09-25 04:28:39,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b442f204/fee0e4f27f92492181e0b60f105f0aa7 [2020-09-25 04:28:39,413 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:28:39,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:28:39,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:39,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:28:39,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:28:39,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:39" (1/1) ... [2020-09-25 04:28:39,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:39, skipping insertion in model container [2020-09-25 04:28:39,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:39" (1/1) ... [2020-09-25 04:28:39,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:28:39,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:28:40,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:40,029 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:28:40,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:40,311 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:28:40,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:40 WrapperNode [2020-09-25 04:28:40,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:40,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:28:40,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:28:40,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:28:40,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:40" (1/1) ... [2020-09-25 04:28:40,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:40" (1/1) ... [2020-09-25 04:28:40,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:40" (1/1) ... [2020-09-25 04:28:40,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:40" (1/1) ... [2020-09-25 04:28:40,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:40" (1/1) ... [2020-09-25 04:28:40,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:40" (1/1) ... [2020-09-25 04:28:40,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:40" (1/1) ... [2020-09-25 04:28:40,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:28:40,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:28:40,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:28:40,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:28:40,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:40" (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 04:28:40,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:28:40,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:28:40,514 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:28:40,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:28:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:28:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:28:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:28:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:28:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:28:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:28:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:28:41,919 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:28:41,920 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:28:41,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:41 BoogieIcfgContainer [2020-09-25 04:28:41,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:28:41,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:28:41,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:28:41,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:28:41,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:28:39" (1/3) ... [2020-09-25 04:28:41,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:41, skipping insertion in model container [2020-09-25 04:28:41,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:40" (2/3) ... [2020-09-25 04:28:41,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:41, skipping insertion in model container [2020-09-25 04:28:41,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:41" (3/3) ... [2020-09-25 04:28:41,938 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2020-09-25 04:28:41,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:28:41,961 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:28:41,983 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:28:42,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:28:42,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:28:42,022 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:28:42,022 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:28:42,022 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:28:42,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:28:42,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:28:42,023 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:28:42,059 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:28:42,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 04:28:42,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:42,084 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, 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, 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 04:28:42,084 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:42,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:42,093 INFO L82 PathProgramCache]: Analyzing trace with hash 192415938, now seen corresponding path program 1 times [2020-09-25 04:28:42,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:42,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829968196] [2020-09-25 04:28:42,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:42,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:42,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:43,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:44,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:45,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:45,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:47,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:47,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 04:28:47,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:28:47,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 04:28:47,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:47,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:28:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 04:28:47,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:28:47,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:47,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:47,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:47,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:47,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:28:47,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:47,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:47,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:47,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:28:47,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:47,779 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 04:28:47,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829968196] [2020-09-25 04:28:47,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:47,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:28:47,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198181926] [2020-09-25 04:28:47,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:28:47,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:47,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:28:47,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:28:47,814 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:28:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:50,339 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 04:28:50,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:28:50,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-25 04:28:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:50,383 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 04:28:50,383 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 04:28:50,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:50,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 04:28:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 04:28:50,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 04:28:50,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 04:28:50,522 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 163 [2020-09-25 04:28:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:50,523 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 04:28:50,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:28:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 04:28:50,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:28:50,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:50,535 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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 04:28:50,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:28:50,535 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:50,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:50,536 INFO L82 PathProgramCache]: Analyzing trace with hash 157617646, now seen corresponding path program 1 times [2020-09-25 04:28:50,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:50,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675946004] [2020-09-25 04:28:50,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:50,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:50,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:50,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:51,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:51,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:55,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 04:28:55,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:28:55,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:28:55,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:55,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 04:28:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 04:28:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:55,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:55,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:55,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:28:55,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:55,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:55,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:55,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:55,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:55,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:55,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:55,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:28:55,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:55,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:55,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:28:55,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:55,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:55,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675946004] [2020-09-25 04:28:55,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:55,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:55,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279933868] [2020-09-25 04:28:55,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:55,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:55,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:55,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:55,881 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 04:28:58,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:58,614 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 04:28:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:58,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 04:28:58,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:58,626 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 04:28:58,627 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 04:28:58,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:58,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 04:28:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 04:28:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 04:28:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 04:28:58,681 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 181 [2020-09-25 04:28:58,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:58,682 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 04:28:58,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:58,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 04:28:58,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 04:28:58,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:58,688 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:58,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:28:58,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:58,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1809000221, now seen corresponding path program 1 times [2020-09-25 04:28:58,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:58,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571786430] [2020-09-25 04:28:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:58,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:59,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:01,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:02,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:03,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:03,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 04:29:03,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:29:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:29:03,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:03,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:03,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:29:03,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 04:29:03,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:29:03,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:03,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:03,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:03,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:03,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:03,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:03,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:29:03,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:03,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:03,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:03,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:03,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:04,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:04,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:04,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:29:04,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:04,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 04:29:04,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:04,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:29:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 04:29:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:04,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571786430] [2020-09-25 04:29:04,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:04,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:29:04,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493304846] [2020-09-25 04:29:04,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:29:04,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:04,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:29:04,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:29:04,392 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 8 states. [2020-09-25 04:29:08,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:08,912 INFO L93 Difference]: Finished difference Result 3284 states and 4426 transitions. [2020-09-25 04:29:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:29:08,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-09-25 04:29:08,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:08,932 INFO L225 Difference]: With dead ends: 3284 [2020-09-25 04:29:08,932 INFO L226 Difference]: Without dead ends: 2000 [2020-09-25 04:29:08,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:29:08,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2020-09-25 04:29:09,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1950. [2020-09-25 04:29:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-09-25 04:29:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2318 transitions. [2020-09-25 04:29:09,031 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2318 transitions. Word has length 187 [2020-09-25 04:29:09,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:09,032 INFO L479 AbstractCegarLoop]: Abstraction has 1950 states and 2318 transitions. [2020-09-25 04:29:09,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:29:09,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2318 transitions. [2020-09-25 04:29:09,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 04:29:09,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:09,041 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:09,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:29:09,042 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:09,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:09,042 INFO L82 PathProgramCache]: Analyzing trace with hash 559246375, now seen corresponding path program 1 times [2020-09-25 04:29:09,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:09,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903848190] [2020-09-25 04:29:09,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:09,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:09,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:14,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:14,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 04:29:14,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:29:14,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:29:14,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:14,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:29:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:29:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:14,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:14,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:14,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:14,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:14,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:14,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:29:14,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:14,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:14,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:14,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:14,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:29:14,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:14,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:14,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:14,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:29:14,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:14,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 04:29:14,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:14,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:29:14,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:14,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903848190] [2020-09-25 04:29:14,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:14,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:29:14,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398090051] [2020-09-25 04:29:14,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:14,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:14,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:14,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:14,367 INFO L87 Difference]: Start difference. First operand 1950 states and 2318 transitions. Second operand 7 states. [2020-09-25 04:29:17,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:17,086 INFO L93 Difference]: Finished difference Result 4055 states and 4900 transitions. [2020-09-25 04:29:17,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:29:17,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-09-25 04:29:17,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:17,100 INFO L225 Difference]: With dead ends: 4055 [2020-09-25 04:29:17,101 INFO L226 Difference]: Without dead ends: 2127 [2020-09-25 04:29:17,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:29:17,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2020-09-25 04:29:17,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1960. [2020-09-25 04:29:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1960 states. [2020-09-25 04:29:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2290 transitions. [2020-09-25 04:29:17,178 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2290 transitions. Word has length 197 [2020-09-25 04:29:17,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:17,179 INFO L479 AbstractCegarLoop]: Abstraction has 1960 states and 2290 transitions. [2020-09-25 04:29:17,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:17,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2290 transitions. [2020-09-25 04:29:17,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 04:29:17,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:17,189 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:29:17,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:29:17,189 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:17,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:17,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1532689640, now seen corresponding path program 1 times [2020-09-25 04:29:17,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:17,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084305803] [2020-09-25 04:29:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:17,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:17,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:19,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:20,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:21,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:22,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:22,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 04:29:22,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:29:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 04:29:22,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:22,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 04:29:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:29:22,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:29:22,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:22,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:22,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:22,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:29:22,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:22,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:29:22,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:22,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:22,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:22,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:29:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:29:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:22,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:22,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:29:22,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:22,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:29:22,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:22,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:22,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:22,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:29:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:22,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:29:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:22,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:22,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:22,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 04:29:22,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:29:22,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:22,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:29:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:29:22,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:29:22,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084305803] [2020-09-25 04:29:22,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:22,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:29:22,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295739155] [2020-09-25 04:29:22,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:29:22,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:22,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:29:22,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:29:22,522 INFO L87 Difference]: Start difference. First operand 1960 states and 2290 transitions. Second operand 7 states. [2020-09-25 04:29:25,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:25,742 INFO L93 Difference]: Finished difference Result 4111 states and 4913 transitions. [2020-09-25 04:29:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:29:25,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 04:29:25,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:25,753 INFO L225 Difference]: With dead ends: 4111 [2020-09-25 04:29:25,753 INFO L226 Difference]: Without dead ends: 2173 [2020-09-25 04:29:25,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:29:25,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2173 states. [2020-09-25 04:29:25,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2173 to 1999. [2020-09-25 04:29:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1999 states. [2020-09-25 04:29:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 2299 transitions. [2020-09-25 04:29:25,822 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 2299 transitions. Word has length 201 [2020-09-25 04:29:25,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:25,823 INFO L479 AbstractCegarLoop]: Abstraction has 1999 states and 2299 transitions. [2020-09-25 04:29:25,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:29:25,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 2299 transitions. [2020-09-25 04:29:25,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 04:29:25,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:25,832 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, 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, 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, 1, 1, 1] [2020-09-25 04:29:25,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:29:25,832 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:25,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:25,833 INFO L82 PathProgramCache]: Analyzing trace with hash 867383139, now seen corresponding path program 1 times [2020-09-25 04:29:25,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:25,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261967186] [2020-09-25 04:29:25,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:25,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:25,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking...