/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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:59:54,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:59:54,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:59:54,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:59:54,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:59:54,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:59:54,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:59:54,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:59:54,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:59:54,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:59:54,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:59:54,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:59:54,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:59:54,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:59:54,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:59:54,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:59:54,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:59:54,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:59:54,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:59:54,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:59:54,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:59:54,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:59:54,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:59:54,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:59:54,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:59:54,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:59:54,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:59:54,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:59:54,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:59:54,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:59:54,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:59:54,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:59:54,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:59:54,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:59:54,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:59:54,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:59:54,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:59:54,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:59:54,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:59:54,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:59:54,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:59:54,358 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 08:59:54,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:59:54,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:59:54,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:59:54,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:59:54,407 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:59:54,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:59:54,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:59:54,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:59:54,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:59:54,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:59:54,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:59:54,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:59:54,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:59:54,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:59:54,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:59:54,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:59:54,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:59:54,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:59:54,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:59:54,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:59:54,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:59:54,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:54,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:59:54,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:59:54,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:59:54,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:59:54,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:59:54,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:59:54,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:59:54,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=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 08:59:54,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:59:54,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:59:54,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:59:54,927 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:59:54,927 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:59:54,929 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-09-25 08:59:55,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c33d47f9/ef191df634f5465eb447d9d87da18bdc/FLAGca3f64152 [2020-09-25 08:59:55,742 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:59:55,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-09-25 08:59:55,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c33d47f9/ef191df634f5465eb447d9d87da18bdc/FLAGca3f64152 [2020-09-25 08:59:55,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c33d47f9/ef191df634f5465eb447d9d87da18bdc [2020-09-25 08:59:55,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:59:55,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:59:55,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:55,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:59:55,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:59:55,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:55" (1/1) ... [2020-09-25 08:59:55,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19617743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:55, skipping insertion in model container [2020-09-25 08:59:55,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:55" (1/1) ... [2020-09-25 08:59:55,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:59:56,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:59:56,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:56,513 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:59:56,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:56,773 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:59:56,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:56 WrapperNode [2020-09-25 08:59:56,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:56,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:59:56,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:59:56,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:59:56,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:56" (1/1) ... [2020-09-25 08:59:56,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:56" (1/1) ... [2020-09-25 08:59:56,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:56" (1/1) ... [2020-09-25 08:59:56,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:56" (1/1) ... [2020-09-25 08:59:56,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:56" (1/1) ... [2020-09-25 08:59:56,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:56" (1/1) ... [2020-09-25 08:59:56,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:56" (1/1) ... [2020-09-25 08:59:56,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:59:56,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:59:56,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:59:56,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:59:56,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:56" (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 08:59:56,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:59:56,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:59:56,983 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 08:59:56,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:59:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 08:59:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:59:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:59:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:59:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:59:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:59:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:59:58,375 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:59:58,376 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:59:58,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:58 BoogieIcfgContainer [2020-09-25 08:59:58,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:59:58,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:59:58,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:59:58,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:59:58,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:59:55" (1/3) ... [2020-09-25 08:59:58,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b07a1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:58, skipping insertion in model container [2020-09-25 08:59:58,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:56" (2/3) ... [2020-09-25 08:59:58,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b07a1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:58, skipping insertion in model container [2020-09-25 08:59:58,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:58" (3/3) ... [2020-09-25 08:59:58,397 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-09-25 08:59:58,409 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:59:58,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:59:58,443 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:59:58,482 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:59:58,482 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:59:58,482 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:59:58,482 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:59:58,482 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:59:58,483 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:59:58,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:59:58,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:59:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 08:59:58,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 08:59:58,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:58,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:58,541 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:58,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:58,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1257233759, now seen corresponding path program 1 times [2020-09-25 08:59:58,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:58,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571404691] [2020-09-25 08:59:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:59,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:59,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:03,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:03,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:03,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 09:00:03,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:00:03,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 09:00:03,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:03,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 09:00:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 09:00:03,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:00:04,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:04,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:04,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:04,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:04,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:04,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 09:00:04,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:04,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:00:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:04,261 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 09:00:04,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571404691] [2020-09-25 09:00:04,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:04,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:00:04,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140340853] [2020-09-25 09:00:04,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:00:04,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:04,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:00:04,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:00:04,299 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:00:06,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:06,644 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 09:00:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:00:06,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-09-25 09:00:06,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:06,680 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 09:00:06,680 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 09:00:06,690 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 09:00:06,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 09:00:06,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 09:00:06,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:00:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 09:00:06,811 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 132 [2020-09-25 09:00:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:06,812 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 09:00:06,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:00:06,812 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 09:00:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 09:00:06,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:06,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:06,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:00:06,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:06,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1159952749, now seen corresponding path program 1 times [2020-09-25 09:00:06,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:06,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988498455] [2020-09-25 09:00:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:06,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:07,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:08,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:11,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:11,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:11,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 09:00:11,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:00:11,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 09:00:11,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:11,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:00:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:00:11,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:12,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:12,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:12,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:00:12,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:12,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:12,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:12,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:00:12,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:12,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:12,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:12,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:12,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:00:12,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 09:00:12,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:12,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:12,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:00:12,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:12,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988498455] [2020-09-25 09:00:12,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:12,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:00:12,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611124883] [2020-09-25 09:00:12,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:00:12,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:12,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:00:12,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:00:12,212 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 8 states. [2020-09-25 09:00:15,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:15,415 INFO L93 Difference]: Finished difference Result 1914 states and 2461 transitions. [2020-09-25 09:00:15,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:00:15,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 154 [2020-09-25 09:00:15,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:15,428 INFO L225 Difference]: With dead ends: 1914 [2020-09-25 09:00:15,428 INFO L226 Difference]: Without dead ends: 1335 [2020-09-25 09:00:15,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:00:15,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-09-25 09:00:15,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1240. [2020-09-25 09:00:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2020-09-25 09:00:15,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1568 transitions. [2020-09-25 09:00:15,489 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1568 transitions. Word has length 154 [2020-09-25 09:00:15,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:15,490 INFO L479 AbstractCegarLoop]: Abstraction has 1240 states and 1568 transitions. [2020-09-25 09:00:15,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:00:15,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1568 transitions. [2020-09-25 09:00:15,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 09:00:15,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:15,500 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:15,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:00:15,501 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:15,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:15,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1406452310, now seen corresponding path program 1 times [2020-09-25 09:00:15,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:15,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338495596] [2020-09-25 09:00:15,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:15,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:15,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:15,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:18,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:20,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 09:00:20,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:00:20,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 09:00:20,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:20,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:20,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:00:20,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:00:20,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 09:00:20,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:20,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:20,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:20,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:20,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 09:00:20,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:20,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:00:20,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:20,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:20,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:20,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:20,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:20,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 09:00:20,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:20,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:20,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:20,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:20,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:20,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 09:00:20,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:20,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 09:00:20,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:20,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:20,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:20,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:20,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:00:20,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 09:00:20,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338495596] [2020-09-25 09:00:20,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:20,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:00:20,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439248725] [2020-09-25 09:00:20,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:20,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:20,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:21,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:21,001 INFO L87 Difference]: Start difference. First operand 1240 states and 1568 transitions. Second operand 7 states. [2020-09-25 09:00:23,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:23,369 INFO L93 Difference]: Finished difference Result 2705 states and 3480 transitions. [2020-09-25 09:00:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:23,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-09-25 09:00:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:23,385 INFO L225 Difference]: With dead ends: 2705 [2020-09-25 09:00:23,386 INFO L226 Difference]: Without dead ends: 1489 [2020-09-25 09:00:23,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:00:23,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2020-09-25 09:00:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1420. [2020-09-25 09:00:23,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1420 states. [2020-09-25 09:00:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1799 transitions. [2020-09-25 09:00:23,479 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1799 transitions. Word has length 186 [2020-09-25 09:00:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:23,487 INFO L479 AbstractCegarLoop]: Abstraction has 1420 states and 1799 transitions. [2020-09-25 09:00:23,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:23,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1799 transitions. [2020-09-25 09:00:23,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 09:00:23,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:23,502 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:23,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:00:23,502 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:23,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:23,503 INFO L82 PathProgramCache]: Analyzing trace with hash -269597623, now seen corresponding path program 1 times [2020-09-25 09:00:23,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:23,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503597728] [2020-09-25 09:00:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:23,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:23,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:25,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:25,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:25,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:25,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:28,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 09:00:28,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:00:28,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 09:00:28,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:28,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:28,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:00:28,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 09:00:28,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 09:00:28,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:28,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:28,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:28,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:00:28,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:28,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:28,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:00:28,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:28,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:00:28,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 09:00:28,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:28,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:28,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:00:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:00:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:28,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:00:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:28,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:28,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 09:00:28,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 09:00:28,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:28,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:28,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:00:28,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:00:29,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503597728] [2020-09-25 09:00:29,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:29,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:00:29,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723164253] [2020-09-25 09:00:29,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:00:29,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:29,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:00:29,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:00:29,139 INFO L87 Difference]: Start difference. First operand 1420 states and 1799 transitions. Second operand 8 states. [2020-09-25 09:00:29,830 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-25 09:00:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:32,598 INFO L93 Difference]: Finished difference Result 4433 states and 5916 transitions. [2020-09-25 09:00:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 09:00:32,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 193 [2020-09-25 09:00:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:32,619 INFO L225 Difference]: With dead ends: 4433 [2020-09-25 09:00:32,619 INFO L226 Difference]: Without dead ends: 3037 [2020-09-25 09:00:32,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:00:32,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2020-09-25 09:00:32,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2487. [2020-09-25 09:00:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2487 states. [2020-09-25 09:00:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 3165 transitions. [2020-09-25 09:00:32,743 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 3165 transitions. Word has length 193 [2020-09-25 09:00:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:32,744 INFO L479 AbstractCegarLoop]: Abstraction has 2487 states and 3165 transitions. [2020-09-25 09:00:32,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:00:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 3165 transitions. [2020-09-25 09:00:32,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 09:00:32,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:32,760 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:32,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:00:32,760 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:32,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:32,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1576864077, now seen corresponding path program 1 times [2020-09-25 09:00:32,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:32,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519597137] [2020-09-25 09:00:32,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:32,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:32,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:37,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-25 09:00:37,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:00:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:00:37,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:37,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:00:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 09:00:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:00:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:37,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:37,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:37,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:37,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:00:37,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:37,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:37,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:37,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:37,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:37,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:37,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:37,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:00:37,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:37,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:00:37,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:37,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:00:37,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:00:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:37,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:38,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:00:38,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:38,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 09:00:38,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:38,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:00:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:38,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 09:00:38,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:38,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 09:00:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:38,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 09:00:38,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:38,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 09:00:38,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:38,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:38,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:00:38,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 132 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 09:00:38,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519597137] [2020-09-25 09:00:38,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:38,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:00:38,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981779499] [2020-09-25 09:00:38,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:00:38,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:38,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:00:38,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:00:38,411 INFO L87 Difference]: Start difference. First operand 2487 states and 3165 transitions. Second operand 10 states. [2020-09-25 09:00:39,905 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-09-25 09:00:41,672 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 09:00:41,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:41,995 INFO L93 Difference]: Finished difference Result 6596 states and 8612 transitions. [2020-09-25 09:00:41,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 09:00:41,995 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 231 [2020-09-25 09:00:41,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:41,996 INFO L225 Difference]: With dead ends: 6596 [2020-09-25 09:00:41,997 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 09:00:42,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2020-09-25 09:00:42,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 09:00:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 09:00:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 09:00:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 09:00:42,046 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 231 [2020-09-25 09:00:42,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:42,046 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 09:00:42,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:00:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 09:00:42,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 09:00:42,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:00:42,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.