/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/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:00:36,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:00:36,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:00:36,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:00:36,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:00:36,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:00:36,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:00:36,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:00:36,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:00:36,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:00:36,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:00:36,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:00:36,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:00:36,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:00:36,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:00:36,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:00:36,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:00:36,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:00:36,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:00:36,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:00:36,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:00:36,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:00:36,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:00:36,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:00:36,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:00:36,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:00:36,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:00:36,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:00:36,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:00:36,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:00:36,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:00:36,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:00:36,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:00:36,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:00:36,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:00:36,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:00:36,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:00:36,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:00:36,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:00:36,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:00:36,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:00:36,315 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 09:00:36,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:00:36,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:00:36,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:00:36,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:00:36,343 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:00:36,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:00:36,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:00:36,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:00:36,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:00:36,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:00:36,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:00:36,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:00:36,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:00:36,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:00:36,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:00:36,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:00:36,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:00:36,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:00:36,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:00:36,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:00:36,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:00:36,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:00:36,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:00:36,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:00:36,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:00:36,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:00:36,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:00:36,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:00:36,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:00:36,349 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 09:00:36,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:00:36,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:00:36,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:00:36,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:00:36,834 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:00:36,836 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 09:00:36,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61367cc38/1c995b0315324ac48aecf358ba64c8f6/FLAG652af5109 [2020-09-25 09:00:37,590 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:00:37,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 09:00:37,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61367cc38/1c995b0315324ac48aecf358ba64c8f6/FLAG652af5109 [2020-09-25 09:00:37,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61367cc38/1c995b0315324ac48aecf358ba64c8f6 [2020-09-25 09:00:37,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:00:37,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:00:37,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:37,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:00:37,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:00:37,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:37" (1/1) ... [2020-09-25 09:00:37,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f67d99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:37, skipping insertion in model container [2020-09-25 09:00:37,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:37" (1/1) ... [2020-09-25 09:00:37,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:00:37,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:00:38,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:38,634 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:00:38,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:38,736 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:00:38,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:38 WrapperNode [2020-09-25 09:00:38,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:38,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:00:38,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:00:38,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:00:38,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:38" (1/1) ... [2020-09-25 09:00:38,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:38" (1/1) ... [2020-09-25 09:00:38,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:38" (1/1) ... [2020-09-25 09:00:38,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:38" (1/1) ... [2020-09-25 09:00:38,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:38" (1/1) ... [2020-09-25 09:00:38,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:38" (1/1) ... [2020-09-25 09:00:38,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:38" (1/1) ... [2020-09-25 09:00:38,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:00:38,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:00:38,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:00:38,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:00:38,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:38" (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 09:00:38,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:00:38,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:00:38,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:00:38,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:00:38,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:00:38,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:00:38,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:00:38,970 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:00:38,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:00:38,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:00:38,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:00:40,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:00:40,407 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:00:40,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:40 BoogieIcfgContainer [2020-09-25 09:00:40,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:00:40,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:00:40,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:00:40,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:00:40,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:00:37" (1/3) ... [2020-09-25 09:00:40,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b62420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:40, skipping insertion in model container [2020-09-25 09:00:40,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:38" (2/3) ... [2020-09-25 09:00:40,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b62420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:40, skipping insertion in model container [2020-09-25 09:00:40,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:40" (3/3) ... [2020-09-25 09:00:40,428 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2020-09-25 09:00:40,440 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:00:40,451 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:00:40,475 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:00:40,511 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:00:40,512 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:00:40,512 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:00:40,512 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:00:40,512 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:00:40,512 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:00:40,513 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:00:40,513 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:00:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:00:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 09:00:40,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:40,568 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] [2020-09-25 09:00:40,569 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:40,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:40,577 INFO L82 PathProgramCache]: Analyzing trace with hash -857113145, now seen corresponding path program 1 times [2020-09-25 09:00:40,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:40,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957384562] [2020-09-25 09:00:40,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:40,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:41,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:43,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:44,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:45,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:45,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 09:00:45,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:45,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:00:45,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:45,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:45,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:00:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 09:00:45,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:00:46,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:46,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:46,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:46,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:46,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:46,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 09:00:46,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:46,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:00:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:46,156 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 09:00:46,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957384562] [2020-09-25 09:00:46,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:46,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:00:46,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214324427] [2020-09-25 09:00:46,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:00:46,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:46,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:00:46,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:00:46,191 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:00:48,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:48,511 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 09:00:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:00:48,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-09-25 09:00:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:48,539 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 09:00:48,539 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 09:00:48,555 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 09:00:48,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 09:00:48,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 09:00:48,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:00:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 09:00:48,701 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 110 [2020-09-25 09:00:48,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:48,702 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 09:00:48,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:00:48,703 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 09:00:48,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 09:00:48,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:48,711 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] [2020-09-25 09:00:48,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:00:48,711 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:48,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:48,712 INFO L82 PathProgramCache]: Analyzing trace with hash -431161361, now seen corresponding path program 1 times [2020-09-25 09:00:48,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:48,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574634796] [2020-09-25 09:00:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:48,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:48,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:49,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:52,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:53,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 09:00:53,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:00:53,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 09:00:53,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:53,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:00:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 09:00:53,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:53,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:53,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:53,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:53,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:53,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:00:53,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:53,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:53,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:53,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:53,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:53,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:53,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:00:53,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:53,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:00:53,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:54,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574634796] [2020-09-25 09:00:54,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:54,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:00:54,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120154595] [2020-09-25 09:00:54,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:00:54,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:54,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:00:54,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:00:54,023 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 6 states. [2020-09-25 09:00:57,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:57,039 INFO L93 Difference]: Finished difference Result 1877 states and 2385 transitions. [2020-09-25 09:00:57,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:00:57,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-09-25 09:00:57,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:57,062 INFO L225 Difference]: With dead ends: 1877 [2020-09-25 09:00:57,063 INFO L226 Difference]: Without dead ends: 1298 [2020-09-25 09:00:57,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:00:57,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2020-09-25 09:00:57,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1034. [2020-09-25 09:00:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-09-25 09:00:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1310 transitions. [2020-09-25 09:00:57,112 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1310 transitions. Word has length 131 [2020-09-25 09:00:57,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:57,113 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1310 transitions. [2020-09-25 09:00:57,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:00:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1310 transitions. [2020-09-25 09:00:57,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 09:00:57,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:57,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:57,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:00:57,124 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:57,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:57,124 INFO L82 PathProgramCache]: Analyzing trace with hash 39430160, now seen corresponding path program 1 times [2020-09-25 09:00:57,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:57,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160771879] [2020-09-25 09:00:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:57,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:57,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:57,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:57,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:57,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:59,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:02,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:02,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 09:01:02,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:02,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 09:01:02,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:02,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 09:01:02,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 09:01:02,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:02,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:02,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:02,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:02,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:01:02,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:02,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:02,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:02,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:02,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:02,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 09:01:02,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:02,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:01:02,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:02,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:01:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:02,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160771879] [2020-09-25 09:01:02,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:02,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:01:02,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849232983] [2020-09-25 09:01:02,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:02,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:02,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:02,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:02,401 INFO L87 Difference]: Start difference. First operand 1034 states and 1310 transitions. Second operand 5 states. [2020-09-25 09:01:04,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:04,455 INFO L93 Difference]: Finished difference Result 2483 states and 3245 transitions. [2020-09-25 09:01:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:01:04,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 09:01:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:04,463 INFO L225 Difference]: With dead ends: 2483 [2020-09-25 09:01:04,464 INFO L226 Difference]: Without dead ends: 998 [2020-09-25 09:01:04,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:04,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2020-09-25 09:01:04,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 988. [2020-09-25 09:01:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-09-25 09:01:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1231 transitions. [2020-09-25 09:01:04,510 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1231 transitions. Word has length 140 [2020-09-25 09:01:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:04,511 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1231 transitions. [2020-09-25 09:01:04,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:01:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1231 transitions. [2020-09-25 09:01:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 09:01:04,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:04,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:04,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:01:04,517 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:04,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:04,517 INFO L82 PathProgramCache]: Analyzing trace with hash -439956008, now seen corresponding path program 1 times [2020-09-25 09:01:04,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:04,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453234639] [2020-09-25 09:01:04,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:04,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:04,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:05,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:05,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:05,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:08,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:09,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 09:01:09,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:01:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:01:09,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:09,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:09,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:09,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 09:01:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-25 09:01:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:09,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:09,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:09,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:09,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:09,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:01:09,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:09,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:09,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:09,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:09,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:09,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:01:09,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:09,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 09:01:09,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:09,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:09,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:09,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:09,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:01:09,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:09,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453234639] [2020-09-25 09:01:09,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:09,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:01:09,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209094390] [2020-09-25 09:01:09,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:09,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:09,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:09,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:09,800 INFO L87 Difference]: Start difference. First operand 988 states and 1231 transitions. Second operand 5 states. [2020-09-25 09:01:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:11,774 INFO L93 Difference]: Finished difference Result 2684 states and 3490 transitions. [2020-09-25 09:01:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:01:11,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 09:01:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:11,788 INFO L225 Difference]: With dead ends: 2684 [2020-09-25 09:01:11,788 INFO L226 Difference]: Without dead ends: 1720 [2020-09-25 09:01:11,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:11,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2020-09-25 09:01:11,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1276. [2020-09-25 09:01:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-09-25 09:01:11,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1571 transitions. [2020-09-25 09:01:11,891 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1571 transitions. Word has length 147 [2020-09-25 09:01:11,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:11,892 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1571 transitions. [2020-09-25 09:01:11,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:01:11,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1571 transitions. [2020-09-25 09:01:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 09:01:11,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:11,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:11,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:01:11,900 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:11,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1709240601, now seen corresponding path program 1 times [2020-09-25 09:01:11,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:11,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899663706] [2020-09-25 09:01:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:11,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:14,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:16,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:16,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 09:01:16,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 09:01:16,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:16,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:01:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 09:01:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:17,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:17,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:17,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:17,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:01:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:17,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:17,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:17,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 09:01:17,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:17,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 09:01:17,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:17,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 09:01:17,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:01:17,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899663706] [2020-09-25 09:01:17,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:17,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:01:17,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456495371] [2020-09-25 09:01:17,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:17,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:17,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:17,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:17,338 INFO L87 Difference]: Start difference. First operand 1276 states and 1571 transitions. Second operand 7 states. [2020-09-25 09:01:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:19,205 INFO L93 Difference]: Finished difference Result 3177 states and 4066 transitions. [2020-09-25 09:01:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:01:19,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 09:01:19,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:19,219 INFO L225 Difference]: With dead ends: 3177 [2020-09-25 09:01:19,220 INFO L226 Difference]: Without dead ends: 1925 [2020-09-25 09:01:19,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:01:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2020-09-25 09:01:19,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1852. [2020-09-25 09:01:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1852 states. [2020-09-25 09:01:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2261 transitions. [2020-09-25 09:01:19,314 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2261 transitions. Word has length 153 [2020-09-25 09:01:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:19,314 INFO L479 AbstractCegarLoop]: Abstraction has 1852 states and 2261 transitions. [2020-09-25 09:01:19,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2261 transitions. [2020-09-25 09:01:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 09:01:19,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:19,322 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, 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] [2020-09-25 09:01:19,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:01:19,323 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:19,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:19,323 INFO L82 PathProgramCache]: Analyzing trace with hash 926609686, now seen corresponding path program 1 times [2020-09-25 09:01:19,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:19,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74573903] [2020-09-25 09:01:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:19,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:21,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:24,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 09:01:24,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:24,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:01:24,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:24,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:01:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:01:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 09:01:24,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:24,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:24,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:24,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:24,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:24,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:01:24,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:24,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:24,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:01:24,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:01:24,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:24,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:24,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:24,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 09:01:24,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:24,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 09:01:24,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:24,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 09:01:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:24,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74573903] [2020-09-25 09:01:24,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:24,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:01:24,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331740953] [2020-09-25 09:01:24,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:01:24,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:24,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:01:24,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:24,965 INFO L87 Difference]: Start difference. First operand 1852 states and 2261 transitions. Second operand 8 states. [2020-09-25 09:01:25,561 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61