/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=1.0 --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/Problem14_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:06:54,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:54,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:54,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:54,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:54,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:54,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:54,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:54,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:54,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:54,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:54,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:54,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:54,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:54,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:54,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:54,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:54,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:54,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:54,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:54,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:54,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:54,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:54,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:54,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:54,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:54,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:54,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:54,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:54,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:54,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:54,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:54,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:54,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:54,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:54,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:54,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:54,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:54,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:54,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:54,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:54,961 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 09:06:55,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:55,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:55,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:55,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:55,009 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:55,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:55,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:55,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:55,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:55,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:55,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:55,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:55,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:55,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:55,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:55,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:55,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:55,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:55,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:55,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:55,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:55,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:55,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:55,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:55,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:55,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:55,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:55,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:55,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:55,016 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:06:55,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:55,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:55,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:55,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:55,475 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:55,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 09:06:55,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/552033be2/2eac99b708de441c969a39723b533b24/FLAG9dafaad5a [2020-09-25 09:06:56,242 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:56,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 09:06:56,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/552033be2/2eac99b708de441c969a39723b533b24/FLAG9dafaad5a [2020-09-25 09:06:56,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/552033be2/2eac99b708de441c969a39723b533b24 [2020-09-25 09:06:56,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:56,434 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:56,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:56,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:56,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:56,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:56" (1/1) ... [2020-09-25 09:06:56,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5957f606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:56, skipping insertion in model container [2020-09-25 09:06:56,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:56" (1/1) ... [2020-09-25 09:06:56,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:56,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:57,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:57,120 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:57,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:57,308 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:57,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:57 WrapperNode [2020-09-25 09:06:57,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:57,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:57,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:57,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:57,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:57" (1/1) ... [2020-09-25 09:06:57,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:57" (1/1) ... [2020-09-25 09:06:57,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:57" (1/1) ... [2020-09-25 09:06:57,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:57" (1/1) ... [2020-09-25 09:06:57,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:57" (1/1) ... [2020-09-25 09:06:57,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:57" (1/1) ... [2020-09-25 09:06:57,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:57" (1/1) ... [2020-09-25 09:06:57,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:57,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:57,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:57,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:57,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:57,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:57,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:57,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:57,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:59,177 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:59,177 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:59,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:59 BoogieIcfgContainer [2020-09-25 09:06:59,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:59,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:59,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:59,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:59,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:56" (1/3) ... [2020-09-25 09:06:59,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef502cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:59, skipping insertion in model container [2020-09-25 09:06:59,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:57" (2/3) ... [2020-09-25 09:06:59,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef502cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:59, skipping insertion in model container [2020-09-25 09:06:59,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:59" (3/3) ... [2020-09-25 09:06:59,198 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2020-09-25 09:06:59,209 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:59,220 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:59,243 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:59,279 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:59,279 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:59,280 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:59,280 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:59,280 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:59,280 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:59,280 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:59,280 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 09:06:59,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 09:06:59,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:59,328 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] [2020-09-25 09:06:59,329 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:59,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:59,337 INFO L82 PathProgramCache]: Analyzing trace with hash 2082104676, now seen corresponding path program 1 times [2020-09-25 09:06:59,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:59,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268795867] [2020-09-25 09:06:59,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:00,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:00,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 09:07:00,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:07:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 872 [2020-09-25 09:07:00,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:00,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:07:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:07:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 09:07:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:07:00,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:00,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:00,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:00,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:00,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:07:00,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:00,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:07:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:00,632 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 09:07:00,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268795867] [2020-09-25 09:07:00,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:07:00,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:07:00,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148278692] [2020-09-25 09:07:00,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:07:00,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:00,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:07:00,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:07:00,669 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 09:07:03,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:03,323 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 09:07:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:07:03,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 09:07:03,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:03,352 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 09:07:03,352 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 09:07:03,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:07:03,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 09:07:03,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 09:07:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 09:07:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 09:07:03,478 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 62 [2020-09-25 09:07:03,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:03,478 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 09:07:03,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:07:03,479 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 09:07:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 09:07:03,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:03,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:07:03,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:07:03,488 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:03,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:03,489 INFO L82 PathProgramCache]: Analyzing trace with hash 824518871, now seen corresponding path program 1 times [2020-09-25 09:07:03,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:03,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099787169] [2020-09-25 09:07:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:03,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:08,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 09:07:08,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:07:08,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:07:08,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:08,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:08,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:07:08,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:07:08,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 09:07:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:08,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:08,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:08,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:08,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 09:07:08,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:08,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:08,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:07:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:07:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:08,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:08,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:07:08,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:08,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 09:07:08,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:08,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:08,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:08,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:07:08,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:09,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099787169] [2020-09-25 09:07:09,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:07:09,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:07:09,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962167026] [2020-09-25 09:07:09,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:07:09,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:09,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:07:09,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:07:09,009 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 7 states. [2020-09-25 09:07:12,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:12,507 INFO L93 Difference]: Finished difference Result 2215 states and 2835 transitions. [2020-09-25 09:07:12,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:07:12,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-09-25 09:07:12,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:12,520 INFO L225 Difference]: With dead ends: 2215 [2020-09-25 09:07:12,520 INFO L226 Difference]: Without dead ends: 1424 [2020-09-25 09:07:12,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:07:12,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-09-25 09:07:12,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1301. [2020-09-25 09:07:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-09-25 09:07:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1560 transitions. [2020-09-25 09:07:12,611 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1560 transitions. Word has length 141 [2020-09-25 09:07:12,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:12,614 INFO L479 AbstractCegarLoop]: Abstraction has 1301 states and 1560 transitions. [2020-09-25 09:07:12,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:07:12,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1560 transitions. [2020-09-25 09:07:12,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 09:07:12,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:12,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:07:12,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:07:12,629 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:12,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:12,630 INFO L82 PathProgramCache]: Analyzing trace with hash 223490446, now seen corresponding path program 1 times [2020-09-25 09:07:12,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:12,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387192133] [2020-09-25 09:07:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:12,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:12,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:12,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:13,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:13,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:15,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 09:07:15,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:07:15,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3023 [2020-09-25 09:07:15,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:15,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:15,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:07:15,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:07:15,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 09:07:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:07:15,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:15,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:15,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:15,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:15,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:07:15,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:15,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:15,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:15,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:07:15,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:15,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:15,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:07:15,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:15,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 09:07:15,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:15,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:15,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:15,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:15,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:07:15,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:16,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387192133] [2020-09-25 09:07:16,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:07:16,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:07:16,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981988432] [2020-09-25 09:07:16,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:07:16,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:16,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:07:16,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:07:16,030 INFO L87 Difference]: Start difference. First operand 1301 states and 1560 transitions. Second operand 7 states. [2020-09-25 09:07:19,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:19,130 INFO L93 Difference]: Finished difference Result 3313 states and 4099 transitions. [2020-09-25 09:07:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:07:19,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-09-25 09:07:19,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:19,148 INFO L225 Difference]: With dead ends: 3313 [2020-09-25 09:07:19,149 INFO L226 Difference]: Without dead ends: 2027 [2020-09-25 09:07:19,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:07:19,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-09-25 09:07:19,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1977. [2020-09-25 09:07:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1977 states. [2020-09-25 09:07:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2316 transitions. [2020-09-25 09:07:19,222 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2316 transitions. Word has length 144 [2020-09-25 09:07:19,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:19,225 INFO L479 AbstractCegarLoop]: Abstraction has 1977 states and 2316 transitions. [2020-09-25 09:07:19,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:07:19,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2316 transitions. [2020-09-25 09:07:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 09:07:19,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:19,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 09:07:19,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:07:19,232 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:19,232 INFO L82 PathProgramCache]: Analyzing trace with hash 209857670, now seen corresponding path program 1 times [2020-09-25 09:07:19,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:19,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746205552] [2020-09-25 09:07:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:19,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:19,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:19,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:20,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:20,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:20,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:23,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:23,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:24,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:24,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 09:07:24,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:07:24,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:07:24,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:24,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 09:07:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 09:07:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:24,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:24,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:24,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:24,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:24,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:07:24,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:24,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:24,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:24,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:24,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:24,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 09:07:24,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:24,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 09:07:24,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:24,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:24,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:24,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:24,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 09:07:24,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:24,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 09:07:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:24,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:24,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:24,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 09:07:24,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:24,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 09:07:24,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:24,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:24,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:24,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:24,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 09:07:24,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:07:25,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746205552] [2020-09-25 09:07:25,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:25,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:07:25,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275304131] [2020-09-25 09:07:25,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:07:25,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:25,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:07:25,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:25,061 INFO L87 Difference]: Start difference. First operand 1977 states and 2316 transitions. Second operand 8 states. [2020-09-25 09:07:28,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:28,972 INFO L93 Difference]: Finished difference Result 4453 states and 5412 transitions. [2020-09-25 09:07:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:07:28,973 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2020-09-25 09:07:28,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:28,986 INFO L225 Difference]: With dead ends: 4453 [2020-09-25 09:07:28,987 INFO L226 Difference]: Without dead ends: 2680 [2020-09-25 09:07:28,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:07:28,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2020-09-25 09:07:29,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2632. [2020-09-25 09:07:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2632 states. [2020-09-25 09:07:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2632 states to 2632 states and 3074 transitions. [2020-09-25 09:07:29,063 INFO L78 Accepts]: Start accepts. Automaton has 2632 states and 3074 transitions. Word has length 249 [2020-09-25 09:07:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:29,064 INFO L479 AbstractCegarLoop]: Abstraction has 2632 states and 3074 transitions. [2020-09-25 09:07:29,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:07:29,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2632 states and 3074 transitions. [2020-09-25 09:07:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-25 09:07:29,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:29,073 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:29,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:07:29,074 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:29,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:29,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1445306711, now seen corresponding path program 1 times [2020-09-25 09:07:29,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:29,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229231910] [2020-09-25 09:07:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:30,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:31,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:31,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:33,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:34,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:34,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-09-25 09:07:34,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:07:34,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 09:07:34,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:34,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:34,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:07:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 09:07:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 09:07:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:34,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:34,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:34,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:34,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:34,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:07:34,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:34,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:34,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:34,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:34,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 09:07:34,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:34,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 09:07:34,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:34,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:07:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 09:07:34,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 09:07:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:34,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:34,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 09:07:34,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:34,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 09:07:34,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:34,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:34,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:34,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 09:07:34,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:07:35,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229231910] [2020-09-25 09:07:35,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:35,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:07:35,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393802145] [2020-09-25 09:07:35,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:07:35,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:35,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:07:35,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:35,243 INFO L87 Difference]: Start difference. First operand 2632 states and 3074 transitions. Second operand 8 states. [2020-09-25 09:07:39,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:39,819 INFO L93 Difference]: Finished difference Result 6101 states and 7295 transitions. [2020-09-25 09:07:39,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:07:39,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 304 [2020-09-25 09:07:39,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:39,843 INFO L225 Difference]: With dead ends: 6101 [2020-09-25 09:07:39,843 INFO L226 Difference]: Without dead ends: 3673 [2020-09-25 09:07:39,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:07:39,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2020-09-25 09:07:39,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3629. [2020-09-25 09:07:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3629 states. [2020-09-25 09:07:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 4177 transitions. [2020-09-25 09:07:39,930 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 4177 transitions. Word has length 304 [2020-09-25 09:07:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:39,931 INFO L479 AbstractCegarLoop]: Abstraction has 3629 states and 4177 transitions. [2020-09-25 09:07:39,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:07:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 4177 transitions. [2020-09-25 09:07:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-25 09:07:39,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:39,939 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:39,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:07:39,939 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:39,940 INFO L82 PathProgramCache]: Analyzing trace with hash 136115333, now seen corresponding path program 1 times [2020-09-25 09:07:39,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:39,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55771474] [2020-09-25 09:07:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:40,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:40,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:40,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:41,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking...