/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:20:03,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:20:03,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:20:03,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:20:03,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:20:03,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:20:03,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:20:03,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:20:03,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:20:03,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:20:03,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:20:03,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:20:03,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:20:03,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:20:03,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:20:03,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:20:03,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:20:03,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:20:03,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:20:03,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:20:03,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:20:03,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:20:03,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:20:03,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:20:03,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:20:03,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:20:03,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:20:03,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:20:03,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:20:03,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:20:03,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:20:03,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:20:03,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:20:03,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:20:03,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:20:03,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:20:03,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:20:03,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:20:03,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:20:03,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:20:03,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:20:03,929 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 11:20:03,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:20:03,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:20:03,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:20:03,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:20:03,980 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:20:03,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:20:03,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:20:03,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:20:03,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:20:03,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:20:03,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:20:03,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:20:03,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:20:03,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:20:03,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:20:03,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:20:03,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:20:03,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:20:03,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:20:03,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:20:03,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:20:03,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:20:03,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:20:03,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:20:03,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:20:03,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:20:03,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:20:03,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:20:03,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:20:03,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:20:04,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:20:04,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:20:04,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:20:04,456 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:20:04,456 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:20:04,457 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-25 11:20:04,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13d890a72/e76522a0dfbd4a45b5e827e589726391/FLAGddc7ba49e [2020-09-25 11:20:05,195 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:20:05,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-25 11:20:05,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13d890a72/e76522a0dfbd4a45b5e827e589726391/FLAGddc7ba49e [2020-09-25 11:20:05,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13d890a72/e76522a0dfbd4a45b5e827e589726391 [2020-09-25 11:20:05,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:20:05,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:20:05,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:05,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:20:05,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:20:05,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:05" (1/1) ... [2020-09-25 11:20:05,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528baabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:05, skipping insertion in model container [2020-09-25 11:20:05,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:05" (1/1) ... [2020-09-25 11:20:05,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:20:05,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:20:05,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:06,002 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:20:06,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:06,306 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:20:06,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:06 WrapperNode [2020-09-25 11:20:06,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:06,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:20:06,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:20:06,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:20:06,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:06" (1/1) ... [2020-09-25 11:20:06,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:06" (1/1) ... [2020-09-25 11:20:06,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:06" (1/1) ... [2020-09-25 11:20:06,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:06" (1/1) ... [2020-09-25 11:20:06,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:06" (1/1) ... [2020-09-25 11:20:06,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:06" (1/1) ... [2020-09-25 11:20:06,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:06" (1/1) ... [2020-09-25 11:20:06,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:20:06,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:20:06,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:20:06,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:20:06,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:06" (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 11:20:06,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:20:06,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:20:06,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:20:06,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:20:06,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:20:06,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:20:06,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:20:06,534 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:20:06,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:20:06,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:20:06,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:20:07,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:20:07,960 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:20:07,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:07 BoogieIcfgContainer [2020-09-25 11:20:07,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:20:07,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:20:07,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:20:07,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:20:07,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:20:05" (1/3) ... [2020-09-25 11:20:07,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d94d252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:07, skipping insertion in model container [2020-09-25 11:20:07,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:06" (2/3) ... [2020-09-25 11:20:07,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d94d252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:07, skipping insertion in model container [2020-09-25 11:20:07,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:07" (3/3) ... [2020-09-25 11:20:07,979 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label55.c [2020-09-25 11:20:07,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:20:08,000 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:20:08,022 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:20:08,054 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:20:08,054 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:20:08,054 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:20:08,055 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:20:08,055 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:20:08,055 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:20:08,055 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:20:08,055 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:20:08,085 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:20:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 11:20:08,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:08,095 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] [2020-09-25 11:20:08,096 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:08,103 INFO L82 PathProgramCache]: Analyzing trace with hash -18090369, now seen corresponding path program 1 times [2020-09-25 11:20:08,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:08,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661304339] [2020-09-25 11:20:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:08,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:08,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:20:08,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:20:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-09-25 11:20:08,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:08,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:08,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:20:08,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:20:08,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:09,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:09,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:09,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:09,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:20:09,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:09,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:09,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:09,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:09,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:09,057 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 11:20:09,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661304339] [2020-09-25 11:20:09,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:09,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:20:09,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090356158] [2020-09-25 11:20:09,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:20:09,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:09,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:20:09,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:20:09,115 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:20:11,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:11,172 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 11:20:11,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:20:11,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-25 11:20:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:11,196 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 11:20:11,197 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 11:20:11,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:11,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 11:20:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 11:20:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 11:20:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 11:20:11,334 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 37 [2020-09-25 11:20:11,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:11,335 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 11:20:11,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:20:11,335 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 11:20:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 11:20:11,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:11,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:11,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:20:11,343 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:11,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:11,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1996109808, now seen corresponding path program 1 times [2020-09-25 11:20:11,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:11,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263464543] [2020-09-25 11:20:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:11,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:15,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:15,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 11:20:15,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:20:15,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4023 [2020-09-25 11:20:15,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:15,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:15,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 11:20:15,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:15,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:15,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:15,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:15,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:15,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:20:15,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:15,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:20:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:15,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:15,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:15,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:15,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:15,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:15,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 11:20:15,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:15,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:20:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:20:15,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263464543] [2020-09-25 11:20:15,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:15,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:20:15,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761861243] [2020-09-25 11:20:15,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:20:15,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:15,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:20:15,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:15,845 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 11:20:17,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:17,555 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 11:20:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:20:17,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-09-25 11:20:17,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:17,560 INFO L225 Difference]: With dead ends: 698 [2020-09-25 11:20:17,561 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 11:20:17,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:20:17,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 11:20:17,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 11:20:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 11:20:17,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 11:20:17,618 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 116 [2020-09-25 11:20:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:17,622 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 11:20:17,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:20:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 11:20:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 11:20:17,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:17,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:17,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:20:17,629 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:17,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:17,630 INFO L82 PathProgramCache]: Analyzing trace with hash 804111666, now seen corresponding path program 1 times [2020-09-25 11:20:17,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:17,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123050308] [2020-09-25 11:20:17,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:17,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:18,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:20,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:20,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 11:20:20,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:20:20,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2735 [2020-09-25 11:20:20,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:20,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:20,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:20,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:20,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 11:20:20,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:20,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:20,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:20,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:20,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:20,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:20,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:20:20,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:20,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:20,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:20,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:20,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:20,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:20,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 11:20:20,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:20,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:20,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:20,798 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:20,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123050308] [2020-09-25 11:20:20,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:20,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:20:20,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377834906] [2020-09-25 11:20:20,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:20,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:20,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:20,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:20,801 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 8 states. [2020-09-25 11:20:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:24,001 INFO L93 Difference]: Finished difference Result 1653 states and 2185 transitions. [2020-09-25 11:20:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:20:24,004 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-09-25 11:20:24,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:24,011 INFO L225 Difference]: With dead ends: 1653 [2020-09-25 11:20:24,011 INFO L226 Difference]: Without dead ends: 1123 [2020-09-25 11:20:24,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:20:24,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-09-25 11:20:24,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 890. [2020-09-25 11:20:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-25 11:20:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1119 transitions. [2020-09-25 11:20:24,050 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1119 transitions. Word has length 126 [2020-09-25 11:20:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:24,051 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1119 transitions. [2020-09-25 11:20:24,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1119 transitions. [2020-09-25 11:20:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 11:20:24,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:24,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:24,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:24,055 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:24,056 INFO L82 PathProgramCache]: Analyzing trace with hash -844817794, now seen corresponding path program 1 times [2020-09-25 11:20:24,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:24,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273783044] [2020-09-25 11:20:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:24,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:24,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:24,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:25,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:27,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 11:20:27,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:27,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3298 [2020-09-25 11:20:27,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:27,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:20:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 11:20:27,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:27,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:27,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:27,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:27,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:27,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:20:27,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:27,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:27,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:27,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:27,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:27,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:27,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 11:20:27,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 11:20:27,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:27,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:20:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 11:20:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:28,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273783044] [2020-09-25 11:20:28,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:28,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:20:28,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770605309] [2020-09-25 11:20:28,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:20:28,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:28,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:20:28,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:20:28,221 INFO L87 Difference]: Start difference. First operand 890 states and 1119 transitions. Second operand 12 states. [2020-09-25 11:20:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:31,003 INFO L93 Difference]: Finished difference Result 1503 states and 1919 transitions. [2020-09-25 11:20:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:20:31,004 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 145 [2020-09-25 11:20:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:31,009 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 11:20:31,009 INFO L226 Difference]: Without dead ends: 949 [2020-09-25 11:20:31,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:20:31,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-09-25 11:20:31,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 894. [2020-09-25 11:20:31,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-09-25 11:20:31,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1126 transitions. [2020-09-25 11:20:31,041 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1126 transitions. Word has length 145 [2020-09-25 11:20:31,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:31,042 INFO L479 AbstractCegarLoop]: Abstraction has 894 states and 1126 transitions. [2020-09-25 11:20:31,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:20:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1126 transitions. [2020-09-25 11:20:31,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 11:20:31,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:31,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:31,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:20:31,046 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:31,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:31,047 INFO L82 PathProgramCache]: Analyzing trace with hash 490505838, now seen corresponding path program 1 times [2020-09-25 11:20:31,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:31,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060663855] [2020-09-25 11:20:31,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:31,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:34,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:34,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 11:20:34,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:20:34,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3748 [2020-09-25 11:20:34,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:34,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:34,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:34,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:20:34,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:20:34,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:34,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:34,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:34,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:34,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:34,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:34,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:20:34,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:34,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:20:34,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:34,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:34,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:35,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:35,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 11:20:35,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 11:20:35,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:35,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 11:20:35,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:35,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060663855] [2020-09-25 11:20:35,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:35,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:20:35,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381565124] [2020-09-25 11:20:35,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:20:35,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:35,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:20:35,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:35,347 INFO L87 Difference]: Start difference. First operand 894 states and 1126 transitions. Second operand 7 states. [2020-09-25 11:20:37,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:37,576 INFO L93 Difference]: Finished difference Result 2269 states and 2976 transitions. [2020-09-25 11:20:37,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:20:37,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-09-25 11:20:37,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:37,584 INFO L225 Difference]: With dead ends: 2269 [2020-09-25 11:20:37,584 INFO L226 Difference]: Without dead ends: 1390 [2020-09-25 11:20:37,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:20:37,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2020-09-25 11:20:37,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1196. [2020-09-25 11:20:37,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-25 11:20:37,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1451 transitions. [2020-09-25 11:20:37,634 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1451 transitions. Word has length 159 [2020-09-25 11:20:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:37,635 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1451 transitions. [2020-09-25 11:20:37,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:20:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1451 transitions. [2020-09-25 11:20:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 11:20:37,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:37,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:37,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:37,638 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:37,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:37,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1096000346, now seen corresponding path program 1 times [2020-09-25 11:20:37,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:37,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284709527] [2020-09-25 11:20:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:37,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:38,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:41,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 11:20:41,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:41,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4034 [2020-09-25 11:20:41,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:41,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 11:20:41,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:41,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:41,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:41,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:41,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:41,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:20:41,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:41,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:20:41,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:41,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:41,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:42,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 11:20:42,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 11:20:42,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:42,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 11:20:42,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:42,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284709527] [2020-09-25 11:20:42,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:42,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:20:42,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922388894] [2020-09-25 11:20:42,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:42,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:42,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:42,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:42,257 INFO L87 Difference]: Start difference. First operand 1196 states and 1451 transitions. Second operand 8 states. [2020-09-25 11:20:44,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:44,343 INFO L93 Difference]: Finished difference Result 2696 states and 3391 transitions. [2020-09-25 11:20:44,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:20:44,344 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-25 11:20:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:44,351 INFO L225 Difference]: With dead ends: 2696 [2020-09-25 11:20:44,352 INFO L226 Difference]: Without dead ends: 1678 [2020-09-25 11:20:44,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:20:44,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-09-25 11:20:44,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1672. [2020-09-25 11:20:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1672 states. [2020-09-25 11:20:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2012 transitions. [2020-09-25 11:20:44,401 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2012 transitions. Word has length 169 [2020-09-25 11:20:44,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:44,402 INFO L479 AbstractCegarLoop]: Abstraction has 1672 states and 2012 transitions. [2020-09-25 11:20:44,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2012 transitions. [2020-09-25 11:20:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 11:20:44,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:44,406 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 11:20:44,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:20:44,406 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:44,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:44,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1639632703, now seen corresponding path program 1 times [2020-09-25 11:20:44,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:44,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091666244] [2020-09-25 11:20:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:44,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:44,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:49,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:49,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:49,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 11:20:49,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:20:49,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 11:20:49,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:49,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:49,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:49,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:49,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:20:49,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:49,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:49,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:49,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:49,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:49,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:49,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:20:49,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:49,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:49,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:49,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:49,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:49,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:49,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:49,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:49,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 11:20:49,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:49,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:20:49,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:49,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:20:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:49,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:49,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:49,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 11:20:49,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:49,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 45 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:20:50,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091666244] [2020-09-25 11:20:50,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:50,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:20:50,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878539804] [2020-09-25 11:20:50,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:20:50,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:50,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:20:50,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:50,064 INFO L87 Difference]: Start difference. First operand 1672 states and 2012 transitions. Second operand 10 states. [2020-09-25 11:20:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:53,684 INFO L93 Difference]: Finished difference Result 3460 states and 4904 transitions. [2020-09-25 11:20:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 11:20:53,685 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2020-09-25 11:20:53,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:53,700 INFO L225 Difference]: With dead ends: 3460 [2020-09-25 11:20:53,701 INFO L226 Difference]: Without dead ends: 2438 [2020-09-25 11:20:53,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:20:53,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2020-09-25 11:20:53,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2194. [2020-09-25 11:20:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2194 states. [2020-09-25 11:20:53,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 2650 transitions. [2020-09-25 11:20:53,806 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 2650 transitions. Word has length 205 [2020-09-25 11:20:53,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:53,806 INFO L479 AbstractCegarLoop]: Abstraction has 2194 states and 2650 transitions. [2020-09-25 11:20:53,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:20:53,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 2650 transitions. [2020-09-25 11:20:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 11:20:53,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:53,811 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 11:20:53,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:20:53,812 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:53,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:53,812 INFO L82 PathProgramCache]: Analyzing trace with hash 785034117, now seen corresponding path program 1 times [2020-09-25 11:20:53,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:53,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328484597] [2020-09-25 11:20:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking...