/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=0.6 --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/Problem01_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:33,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:33,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:33,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:33,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:33,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:33,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:33,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:33,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:33,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:33,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:33,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:33,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:33,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:33,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:33,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:33,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:33,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:33,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:33,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:33,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:33,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:33,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:33,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:33,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:33,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:33,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:33,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:33,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:33,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:33,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:33,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:33,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:33,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:33,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:33,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:33,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:33,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:33,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:33,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:33,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:33,918 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 06:43:33,975 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:33,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:33,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:33,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:33,978 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:33,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:33,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:33,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:33,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:33,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:33,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:33,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:33,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:33,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:33,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:33,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:33,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:33,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:33,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:33,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:33,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:33,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:33,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:33,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:33,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:33,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:33,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:33,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:33,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:33,986 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:43:34,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:34,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:34,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:34,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:34,485 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:34,486 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 06:43:34,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb67c0e83/98714e232a7f429a8cb0842fc894d5f1/FLAGed4705fc2 [2020-09-25 06:43:35,165 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:35,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 06:43:35,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb67c0e83/98714e232a7f429a8cb0842fc894d5f1/FLAGed4705fc2 [2020-09-25 06:43:35,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb67c0e83/98714e232a7f429a8cb0842fc894d5f1 [2020-09-25 06:43:35,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:35,435 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:35,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:35,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:35,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:35,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:35" (1/1) ... [2020-09-25 06:43:35,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:35, skipping insertion in model container [2020-09-25 06:43:35,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:35" (1/1) ... [2020-09-25 06:43:35,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:35,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:35,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:35,981 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:36,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:36,224 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:36,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:36 WrapperNode [2020-09-25 06:43:36,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:36,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:36,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:36,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:36,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:36" (1/1) ... [2020-09-25 06:43:36,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:36" (1/1) ... [2020-09-25 06:43:36,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:36" (1/1) ... [2020-09-25 06:43:36,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:36" (1/1) ... [2020-09-25 06:43:36,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:36" (1/1) ... [2020-09-25 06:43:36,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:36" (1/1) ... [2020-09-25 06:43:36,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:36" (1/1) ... [2020-09-25 06:43:36,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:43:36,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:43:36,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:43:36,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:43:36,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:36" (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 06:43:36,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:43:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:43:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:43:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:43:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:43:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:43:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:43:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:43:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:43:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:43:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:37,746 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:37,747 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:37,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:37 BoogieIcfgContainer [2020-09-25 06:43:37,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:37,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:37,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:37,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:37,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:35" (1/3) ... [2020-09-25 06:43:37,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:37, skipping insertion in model container [2020-09-25 06:43:37,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:36" (2/3) ... [2020-09-25 06:43:37,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:37, skipping insertion in model container [2020-09-25 06:43:37,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:37" (3/3) ... [2020-09-25 06:43:37,772 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-09-25 06:43:37,783 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:37,798 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:37,821 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:37,862 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:37,862 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:37,862 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:37,862 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:37,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:37,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:37,863 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:37,863 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:43:37,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 06:43:37,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:37,919 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] [2020-09-25 06:43:37,920 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:37,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:37,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2032478133, now seen corresponding path program 1 times [2020-09-25 06:43:37,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:37,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 06:43:37,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:38,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:43,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:43,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 06:43:43,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:43,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:43:43,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:43,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:43:43,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 06:43:43,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:43:43,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:43,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:43,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:43,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:43,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 06:43:43,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:43,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:43,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:43,517 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 06:43:43,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 06:43:43,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:43,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:43:43,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841919217] [2020-09-25 06:43:43,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:43:43,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:43,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:43:43,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:43:43,550 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:43:45,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:45,751 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 06:43:45,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:43:45,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 06:43:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:45,784 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 06:43:45,784 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 06:43:45,794 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 06:43:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 06:43:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 06:43:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 06:43:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 06:43:45,891 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 127 [2020-09-25 06:43:45,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:45,893 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 06:43:45,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:43:45,893 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 06:43:45,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 06:43:45,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:45,903 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:43:45,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:43:45,904 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:45,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:45,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1111410035, now seen corresponding path program 1 times [2020-09-25 06:43:45,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:45,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321700939] [2020-09-25 06:43:45,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:45,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:47,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:50,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 06:43:50,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:43:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:43:50,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:50,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:43:50,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:43:50,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:51,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:51,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:51,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:51,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:51,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:43:51,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:51,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:51,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:51,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:51,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:51,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:51,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:51,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:51,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 06:43:51,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:51,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:51,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:51,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:51,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:51,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321700939] [2020-09-25 06:43:51,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:51,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:43:51,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145028666] [2020-09-25 06:43:51,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:51,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:51,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:51,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:51,227 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 06:43:53,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:53,434 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-25 06:43:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:43:53,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-25 06:43:53,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:53,444 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 06:43:53,444 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 06:43:53,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 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 06:43:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 06:43:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-25 06:43:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 06:43:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1174 transitions. [2020-09-25 06:43:53,506 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1174 transitions. Word has length 148 [2020-09-25 06:43:53,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:53,506 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1174 transitions. [2020-09-25 06:43:53,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1174 transitions. [2020-09-25 06:43:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 06:43:53,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:53,515 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:43:53,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:43:53,515 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:53,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1441250023, now seen corresponding path program 1 times [2020-09-25 06:43:53,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:53,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823444170] [2020-09-25 06:43:53,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:54,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:56,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:57,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:58,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 06:43:58,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:58,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:43:58,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:58,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:43:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:43:58,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:58,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:58,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:58,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:58,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:58,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:43:58,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:58,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:43:58,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:58,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:58,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:43:58,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:58,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 06:43:58,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:58,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:58,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:43:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:43:58,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:58,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823444170] [2020-09-25 06:43:58,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:58,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:43:58,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298899136] [2020-09-25 06:43:58,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:43:58,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:58,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:43:58,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:43:58,859 INFO L87 Difference]: Start difference. First operand 966 states and 1174 transitions. Second operand 8 states. [2020-09-25 06:44:01,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:01,887 INFO L93 Difference]: Finished difference Result 3167 states and 4133 transitions. [2020-09-25 06:44:01,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:44:01,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 06:44:01,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:01,902 INFO L225 Difference]: With dead ends: 3167 [2020-09-25 06:44:01,902 INFO L226 Difference]: Without dead ends: 2225 [2020-09-25 06:44:01,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:44:01,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2020-09-25 06:44:01,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2068. [2020-09-25 06:44:01,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-09-25 06:44:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2599 transitions. [2020-09-25 06:44:01,987 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2599 transitions. Word has length 149 [2020-09-25 06:44:01,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:01,987 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2599 transitions. [2020-09-25 06:44:01,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:44:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2599 transitions. [2020-09-25 06:44:01,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 06:44:01,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:01,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:01,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:44:01,998 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:01,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:01,998 INFO L82 PathProgramCache]: Analyzing trace with hash -2031815638, now seen corresponding path program 1 times [2020-09-25 06:44:01,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:01,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052922457] [2020-09-25 06:44:01,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:02,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:04,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:05,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:07,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:07,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 06:44:07,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:44:07,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:44:07,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:07,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 06:44:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:44:07,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:07,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:07,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:07,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:07,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:44:07,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:07,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:44:07,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:07,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:07,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:07,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:44:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:07,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:07,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:07,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:44:07,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:07,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:44:07,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:07,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:44:07,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:07,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 06:44:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:07,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:07,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:44:07,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:07,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 06:44:07,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:07,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:44:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:07,406 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:44:07,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052922457] [2020-09-25 06:44:07,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:07,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:44:07,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763508420] [2020-09-25 06:44:07,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:44:07,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:07,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:44:07,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:44:07,414 INFO L87 Difference]: Start difference. First operand 2068 states and 2599 transitions. Second operand 8 states. [2020-09-25 06:44:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:09,515 INFO L93 Difference]: Finished difference Result 5410 states and 6930 transitions. [2020-09-25 06:44:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:44:09,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 06:44:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:09,534 INFO L225 Difference]: With dead ends: 5410 [2020-09-25 06:44:09,534 INFO L226 Difference]: Without dead ends: 3366 [2020-09-25 06:44:09,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:44:09,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2020-09-25 06:44:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 2650. [2020-09-25 06:44:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2650 states. [2020-09-25 06:44:09,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3380 transitions. [2020-09-25 06:44:09,636 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3380 transitions. Word has length 165 [2020-09-25 06:44:09,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:09,636 INFO L479 AbstractCegarLoop]: Abstraction has 2650 states and 3380 transitions. [2020-09-25 06:44:09,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:44:09,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3380 transitions. [2020-09-25 06:44:09,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 06:44:09,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:09,647 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:44:09,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:44:09,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:09,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:09,648 INFO L82 PathProgramCache]: Analyzing trace with hash -531650440, now seen corresponding path program 1 times [2020-09-25 06:44:09,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:09,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419367978] [2020-09-25 06:44:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:09,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:09,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:11,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:14,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:14,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 06:44:14,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:44:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 06:44:14,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:14,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:44:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:44:14,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:14,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:14,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:14,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:14,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:44:14,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:14,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:14,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:14,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:44:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:14,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:14,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:14,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:44:14,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:14,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:44:14,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:14,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:14,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:14,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:14,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:44:14,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:14,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:44:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:14,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:14,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:14,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:44:14,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:14,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 06:44:14,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:14,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:14,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:14,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:14,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:44:14,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:14,984 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:44:14,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419367978] [2020-09-25 06:44:14,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:14,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:44:14,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28858369] [2020-09-25 06:44:14,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:44:14,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:14,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:44:14,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:14,987 INFO L87 Difference]: Start difference. First operand 2650 states and 3380 transitions. Second operand 7 states. [2020-09-25 06:44:17,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:17,094 INFO L93 Difference]: Finished difference Result 5616 states and 7218 transitions. [2020-09-25 06:44:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:44:17,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-09-25 06:44:17,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:17,112 INFO L225 Difference]: With dead ends: 5616 [2020-09-25 06:44:17,112 INFO L226 Difference]: Without dead ends: 2990 [2020-09-25 06:44:17,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:44:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-09-25 06:44:17,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2795. [2020-09-25 06:44:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-09-25 06:44:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3538 transitions. [2020-09-25 06:44:17,237 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3538 transitions. Word has length 170 [2020-09-25 06:44:17,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:17,237 INFO L479 AbstractCegarLoop]: Abstraction has 2795 states and 3538 transitions. [2020-09-25 06:44:17,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:44:17,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3538 transitions. [2020-09-25 06:44:17,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 06:44:17,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:17,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:17,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:44:17,249 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:17,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:17,249 INFO L82 PathProgramCache]: Analyzing trace with hash 2069482775, now seen corresponding path program 1 times [2020-09-25 06:44:17,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:17,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865718311] [2020-09-25 06:44:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:19,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:19,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:22,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:22,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 06:44:22,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 06:44:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:44:22,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:22,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:44:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:44:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:44:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:22,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:22,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:22,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:22,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:44:22,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:22,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:44:22,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:22,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:44:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:44:22,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:22,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:44:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:22,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:22,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:22,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:44:22,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 06:44:22,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:22,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:44:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:22,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:44:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:22,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:22,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:22,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:44:22,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:44:22,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:22,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:22,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 06:44:22,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:22,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:44:22,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865718311] [2020-09-25 06:44:22,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:22,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:44:22,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480799076] [2020-09-25 06:44:22,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:44:22,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:22,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:44:22,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:44:22,632 INFO L87 Difference]: Start difference. First operand 2795 states and 3538 transitions. Second operand 8 states.