/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:24:34,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:24:34,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:24:34,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:24:34,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:24:34,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:24:34,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:24:34,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:24:34,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:24:34,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:24:34,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:24:34,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:24:34,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:24:34,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:24:34,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:24:34,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:24:34,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:24:34,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:24:34,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:24:34,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:24:34,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:24:34,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:24:34,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:24:34,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:24:34,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:24:34,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:24:34,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:24:34,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:24:34,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:24:34,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:24:34,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:24:34,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:24:34,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:24:34,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:24:34,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:24:34,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:24:34,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:24:34,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:24:34,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:24:34,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:24:34,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:24:34,711 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 [2020-09-24 19:24:34,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:24:34,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:24:34,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:24:34,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:24:34,741 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:24:34,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:24:34,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:24:34,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:24:34,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:24:34,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:24:34,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:24:34,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:24:34,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:24:34,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:24:34,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:24:34,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:24:34,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:24:34,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:24:34,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:24:34,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:24:34,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:24:34,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:34,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:24:34,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:24:34,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:24:34,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:24:34,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:24:34,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:24:34,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:24:34,746 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:24:35,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:24:35,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:24:35,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:24:35,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:24:35,227 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:24:35,228 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-24 19:24:35,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37756fdc1/8d094e2e1748466d851a48e2c60abd70/FLAG48f4b23e6 [2020-09-24 19:24:35,965 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:24:35,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-24 19:24:35,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37756fdc1/8d094e2e1748466d851a48e2c60abd70/FLAG48f4b23e6 [2020-09-24 19:24:36,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37756fdc1/8d094e2e1748466d851a48e2c60abd70 [2020-09-24 19:24:36,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:24:36,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:24:36,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:36,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:24:36,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:24:36,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:36" (1/1) ... [2020-09-24 19:24:36,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722dc2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:36, skipping insertion in model container [2020-09-24 19:24:36,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:36" (1/1) ... [2020-09-24 19:24:36,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:24:36,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:24:36,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:36,773 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:24:36,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:36,917 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:24:36,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:36 WrapperNode [2020-09-24 19:24:36,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:36,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:24:36,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:24:36,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:24:36,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:36" (1/1) ... [2020-09-24 19:24:36,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:36" (1/1) ... [2020-09-24 19:24:36,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:36" (1/1) ... [2020-09-24 19:24:36,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:36" (1/1) ... [2020-09-24 19:24:36,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:36" (1/1) ... [2020-09-24 19:24:36,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:36" (1/1) ... [2020-09-24 19:24:36,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:36" (1/1) ... [2020-09-24 19:24:37,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:24:37,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:24:37,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:24:37,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:24:37,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:24:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:24:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 19:24:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 19:24:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 19:24:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-24 19:24:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:24:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:24:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:24:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 19:24:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 19:24:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 19:24:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 19:24:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 19:24:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 19:24:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 19:24:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 19:24:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 19:24:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 19:24:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 19:24:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 19:24:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 19:24:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 19:24:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 19:24:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 19:24:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 19:24:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 19:24:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 19:24:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 19:24:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 19:24:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 19:24:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 19:24:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 19:24:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 19:24:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 19:24:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 19:24:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 19:24:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 19:24:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 19:24:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 19:24:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 19:24:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 19:24:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 19:24:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 19:24:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 19:24:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 19:24:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 19:24:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 19:24:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 19:24:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 19:24:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 19:24:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 19:24:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 19:24:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 19:24:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 19:24:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 19:24:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 19:24:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 19:24:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 19:24:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 19:24:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 19:24:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 19:24:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 19:24:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 19:24:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 19:24:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 19:24:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 19:24:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 19:24:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 19:24:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 19:24:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:24:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 19:24:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 19:24:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 19:24:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:24:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 19:24:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 19:24:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 19:24:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 19:24:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 19:24:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 19:24:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 19:24:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 19:24:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 19:24:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 19:24:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 19:24:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 19:24:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 19:24:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 19:24:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 19:24:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 19:24:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 19:24:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 19:24:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 19:24:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 19:24:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 19:24:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 19:24:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 19:24:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 19:24:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 19:24:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 19:24:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 19:24:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 19:24:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 19:24:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 19:24:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 19:24:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 19:24:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 19:24:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 19:24:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 19:24:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 19:24:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 19:24:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 19:24:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 19:24:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 19:24:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-24 19:24:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:24:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:24:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 19:24:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:24:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 19:24:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:24:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:24:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:24:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:24:37,474 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 19:24:37,754 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:24:37,755 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 19:24:37,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:37 BoogieIcfgContainer [2020-09-24 19:24:37,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:24:37,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:24:37,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:24:37,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:24:37,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:24:36" (1/3) ... [2020-09-24 19:24:37,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745cdd04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:37, skipping insertion in model container [2020-09-24 19:24:37,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:36" (2/3) ... [2020-09-24 19:24:37,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745cdd04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:37, skipping insertion in model container [2020-09-24 19:24:37,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:37" (3/3) ... [2020-09-24 19:24:37,781 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-09-24 19:24:37,795 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:24:37,807 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:24:37,829 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:24:37,860 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:24:37,860 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:24:37,861 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:24:37,861 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:24:37,861 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:24:37,861 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:24:37,861 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:24:37,861 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:24:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-24 19:24:37,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 19:24:37,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:37,902 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] [2020-09-24 19:24:37,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:37,911 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-09-24 19:24:37,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:37,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649310793] [2020-09-24 19:24:37,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:38,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:38,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:38,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:24:38,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:38,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-24 19:24:38,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:24:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:38,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:24:38,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:38,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:38,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:38,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:38,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:24:38,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:38,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:38,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:38,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 19:24:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:38,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:38,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:24:38,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:24:38,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:38,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 19:24:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:38,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:38,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649310793] [2020-09-24 19:24:38,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:38,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:24:38,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65646933] [2020-09-24 19:24:38,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:24:38,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:38,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:24:38,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:24:38,465 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-09-24 19:24:38,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:38,762 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-09-24 19:24:38,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:24:38,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-24 19:24:38,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:38,780 INFO L225 Difference]: With dead ends: 230 [2020-09-24 19:24:38,780 INFO L226 Difference]: Without dead ends: 153 [2020-09-24 19:24:38,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:24:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-24 19:24:38,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-09-24 19:24:38,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 19:24:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-24 19:24:38,847 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-09-24 19:24:38,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:38,847 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-24 19:24:38,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:24:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-24 19:24:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 19:24:38,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:38,850 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] [2020-09-24 19:24:38,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:24:38,850 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:38,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:38,851 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-09-24 19:24:38,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:38,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052674291] [2020-09-24 19:24:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:38,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:39,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:39,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:24:39,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:39,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-24 19:24:39,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:39,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:24:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:24:39,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:39,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:39,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:39,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:39,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:39,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:39,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:24:39,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:39,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 19:24:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:39,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:39,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:39,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:24:39,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 19:24:39,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:24:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:24:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:24:39,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:39,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052674291] [2020-09-24 19:24:39,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:39,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:24:39,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850947168] [2020-09-24 19:24:39,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:24:39,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:39,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:24:39,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:24:39,414 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-09-24 19:24:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:39,801 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-09-24 19:24:39,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:24:39,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-09-24 19:24:39,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:39,804 INFO L225 Difference]: With dead ends: 172 [2020-09-24 19:24:39,804 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 19:24:39,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:24:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 19:24:39,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-09-24 19:24:39,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 19:24:39,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-09-24 19:24:39,819 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-09-24 19:24:39,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:39,820 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-09-24 19:24:39,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:24:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-09-24 19:24:39,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 19:24:39,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:39,822 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] [2020-09-24 19:24:39,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:24:39,823 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:39,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:39,823 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-09-24 19:24:39,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:39,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137277513] [2020-09-24 19:24:39,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:39,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:40,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:40,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:40,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:40,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 19:24:40,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:24:40,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-24 19:24:40,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:24:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:40,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:40,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:40,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:40,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:40,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:40,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:40,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:40,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 19:24:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:40,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:41,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:41,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 19:24:41,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-24 19:24:41,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:41,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:41,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:24:41,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:24:41,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:41,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137277513] [2020-09-24 19:24:41,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:41,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:24:41,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455309521] [2020-09-24 19:24:41,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:24:41,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:41,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:24:41,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:24:41,222 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 9 states. [2020-09-24 19:24:41,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:41,592 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2020-09-24 19:24:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:24:41,592 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 19:24:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:41,594 INFO L225 Difference]: With dead ends: 193 [2020-09-24 19:24:41,595 INFO L226 Difference]: Without dead ends: 133 [2020-09-24 19:24:41,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:24:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-24 19:24:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-09-24 19:24:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-24 19:24:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2020-09-24 19:24:41,608 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 51 [2020-09-24 19:24:41,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:41,609 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2020-09-24 19:24:41,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:24:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2020-09-24 19:24:41,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 19:24:41,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:41,612 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:24:41,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:24:41,612 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:41,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:41,613 INFO L82 PathProgramCache]: Analyzing trace with hash -586426640, now seen corresponding path program 2 times [2020-09-24 19:24:41,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:41,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732723418] [2020-09-24 19:24:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:41,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:41,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:42,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:42,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:42,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:24:42,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:24:42,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-24 19:24:42,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:42,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:24:42,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:24:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:24:42,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:42,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:42,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:42,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:42,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:42,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:42,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:24:42,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:42,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:42,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 19:24:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:42,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:42,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:43,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:43,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 19:24:43,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:43,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-09-24 19:24:43,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:24:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:24:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:24:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:43,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732723418] [2020-09-24 19:24:43,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:43,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:24:43,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501091882] [2020-09-24 19:24:43,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:24:43,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:43,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:24:43,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:24:43,397 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand 6 states. [2020-09-24 19:24:43,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:43,688 INFO L93 Difference]: Finished difference Result 196 states and 216 transitions. [2020-09-24 19:24:43,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:24:43,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-09-24 19:24:43,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:43,691 INFO L225 Difference]: With dead ends: 196 [2020-09-24 19:24:43,691 INFO L226 Difference]: Without dead ends: 115 [2020-09-24 19:24:43,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:24:43,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-24 19:24:43,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2020-09-24 19:24:43,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-24 19:24:43,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-09-24 19:24:43,712 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 70 [2020-09-24 19:24:43,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:43,713 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-09-24 19:24:43,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:24:43,713 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-09-24 19:24:43,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 19:24:43,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:43,716 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:24:43,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:24:43,716 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:43,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:43,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-09-24 19:24:43,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:43,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018978002] [2020-09-24 19:24:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:43,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:44,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:44,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:24:44,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:44,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:24:44,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:44,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:24:44,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:44,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:24:44,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:44,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:44,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:44,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:44,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:44,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:44,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:24:44,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:44,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 19:24:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:44,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:45,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:45,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:24:45,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:45,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-24 19:24:45,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:24:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:24:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 19:24:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:45,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018978002] [2020-09-24 19:24:45,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:45,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 19:24:45,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197589136] [2020-09-24 19:24:45,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:24:45,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:45,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:24:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:24:45,525 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 11 states. [2020-09-24 19:24:45,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:45,900 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2020-09-24 19:24:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:24:45,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-24 19:24:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:45,903 INFO L225 Difference]: With dead ends: 214 [2020-09-24 19:24:45,903 INFO L226 Difference]: Without dead ends: 154 [2020-09-24 19:24:45,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:24:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-24 19:24:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2020-09-24 19:24:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-24 19:24:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-09-24 19:24:45,915 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 71 [2020-09-24 19:24:45,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:45,915 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-09-24 19:24:45,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:24:45,916 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-09-24 19:24:45,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-24 19:24:45,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:45,918 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:24:45,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:24:45,918 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:45,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:45,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1395228995, now seen corresponding path program 2 times [2020-09-24 19:24:45,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:45,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289426475] [2020-09-24 19:24:45,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:46,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:46,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 19:24:46,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:24:46,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:24:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:46,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 19:24:46,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:47,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:47,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:47,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:47,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:47,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:47,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:47,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:47,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:47,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:47,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 19:24:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:47,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:47,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 19:24:47,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-09-24 19:24:47,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:24:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:24:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:24:47,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:48,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289426475] [2020-09-24 19:24:48,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:48,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 19:24:48,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524872406] [2020-09-24 19:24:48,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 19:24:48,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:48,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 19:24:48,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:24:48,216 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 13 states. [2020-09-24 19:24:48,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:48,776 INFO L93 Difference]: Finished difference Result 235 states and 255 transitions. [2020-09-24 19:24:48,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:24:48,777 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-24 19:24:48,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:48,779 INFO L225 Difference]: With dead ends: 235 [2020-09-24 19:24:48,780 INFO L226 Difference]: Without dead ends: 175 [2020-09-24 19:24:48,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-09-24 19:24:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-24 19:24:48,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 156. [2020-09-24 19:24:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-09-24 19:24:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2020-09-24 19:24:48,804 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 91 [2020-09-24 19:24:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:48,806 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2020-09-24 19:24:48,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 19:24:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2020-09-24 19:24:48,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-24 19:24:48,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:48,813 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:48,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:24:48,814 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:48,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:48,814 INFO L82 PathProgramCache]: Analyzing trace with hash 274581320, now seen corresponding path program 3 times [2020-09-24 19:24:48,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:48,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395913024] [2020-09-24 19:24:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:49,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:49,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:24:49,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:49,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-09-24 19:24:49,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:24:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:24:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 19:24:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:50,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:50,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:50,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:50,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:50,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 19:24:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:50,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:51,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:51,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 19:24:51,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:51,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:24:51,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:51,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:24:51,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:24:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:24:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:51,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395913024] [2020-09-24 19:24:51,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:51,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 19:24:51,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601652409] [2020-09-24 19:24:51,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 19:24:51,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:51,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 19:24:51,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:24:51,374 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand 15 states. [2020-09-24 19:24:51,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:51,960 INFO L93 Difference]: Finished difference Result 256 states and 277 transitions. [2020-09-24 19:24:51,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:24:51,960 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-09-24 19:24:51,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:51,962 INFO L225 Difference]: With dead ends: 256 [2020-09-24 19:24:51,963 INFO L226 Difference]: Without dead ends: 196 [2020-09-24 19:24:51,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-09-24 19:24:51,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-24 19:24:51,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 177. [2020-09-24 19:24:51,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-24 19:24:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 190 transitions. [2020-09-24 19:24:51,980 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 190 transitions. Word has length 111 [2020-09-24 19:24:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:51,982 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 190 transitions. [2020-09-24 19:24:51,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 19:24:51,982 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 190 transitions. [2020-09-24 19:24:51,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-24 19:24:51,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:51,991 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:51,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:24:51,991 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:51,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:51,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1182686291, now seen corresponding path program 4 times [2020-09-24 19:24:51,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:51,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144107562] [2020-09-24 19:24:51,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:53,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:53,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 19:24:53,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:53,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-09-24 19:24:53,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 19:24:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 19:24:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 19:24:53,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:53,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:53,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:53,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:53,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:53,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:53,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:24:53,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:53,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:53,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:53,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:53,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 19:24:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:54,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:54,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 19:24:54,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:54,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-09-24 19:24:54,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:54,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 19:24:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:54,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 19:24:54,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 19:24:54,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144107562] [2020-09-24 19:24:54,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:54,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 19:24:54,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278815351] [2020-09-24 19:24:54,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 19:24:54,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:54,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 19:24:54,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:24:54,687 INFO L87 Difference]: Start difference. First operand 177 states and 190 transitions. Second operand 17 states. [2020-09-24 19:24:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:55,567 INFO L93 Difference]: Finished difference Result 308 states and 334 transitions. [2020-09-24 19:24:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 19:24:55,568 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 131 [2020-09-24 19:24:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:55,571 INFO L225 Difference]: With dead ends: 308 [2020-09-24 19:24:55,571 INFO L226 Difference]: Without dead ends: 253 [2020-09-24 19:24:55,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2020-09-24 19:24:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-24 19:24:55,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 183. [2020-09-24 19:24:55,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-24 19:24:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2020-09-24 19:24:55,583 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 131 [2020-09-24 19:24:55,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:55,584 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2020-09-24 19:24:55,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 19:24:55,584 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2020-09-24 19:24:55,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-24 19:24:55,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:55,586 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:55,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:24:55,586 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:55,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1200683152, now seen corresponding path program 1 times [2020-09-24 19:24:55,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:55,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849554490] [2020-09-24 19:24:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:55,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:56,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 19:24:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:24:56,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 19:24:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 19:24:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 19:24:56,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:56,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:56,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:56,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:56,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:24:56,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:24:56,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:56,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:56,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 19:24:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:57,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:57,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:57,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 19:24:57,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:57,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:24:57,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 19:24:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:57,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 19:24:57,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 19:24:58,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849554490] [2020-09-24 19:24:58,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:58,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 19:24:58,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901618447] [2020-09-24 19:24:58,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 19:24:58,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:58,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 19:24:58,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:24:58,302 INFO L87 Difference]: Start difference. First operand 183 states and 197 transitions. Second operand 18 states. [2020-09-24 19:24:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:59,255 INFO L93 Difference]: Finished difference Result 286 states and 310 transitions. [2020-09-24 19:24:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 19:24:59,257 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 133 [2020-09-24 19:24:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:59,259 INFO L225 Difference]: With dead ends: 286 [2020-09-24 19:24:59,259 INFO L226 Difference]: Without dead ends: 231 [2020-09-24 19:24:59,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2020-09-24 19:24:59,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-24 19:24:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 187. [2020-09-24 19:24:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-09-24 19:24:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 201 transitions. [2020-09-24 19:24:59,274 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 201 transitions. Word has length 133 [2020-09-24 19:24:59,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:59,275 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 201 transitions. [2020-09-24 19:24:59,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 19:24:59,276 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 201 transitions. [2020-09-24 19:24:59,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 19:24:59,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:59,278 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:59,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:24:59,278 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:59,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:59,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2062394754, now seen corresponding path program 1 times [2020-09-24 19:24:59,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:59,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803631339] [2020-09-24 19:24:59,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:59,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:59,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:00,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:00,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 19:25:00,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:00,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:25:00,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 19:25:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 19:25:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:25:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:00,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:00,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:00,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:25:00,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:00,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:25:00,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:00,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 19:25:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:01,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 19:25:01,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-09-24 19:25:01,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:25:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 19:25:01,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-09-24 19:25:02,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803631339] [2020-09-24 19:25:02,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:02,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-24 19:25:02,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463491960] [2020-09-24 19:25:02,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 19:25:02,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:02,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 19:25:02,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:25:02,239 INFO L87 Difference]: Start difference. First operand 187 states and 201 transitions. Second operand 17 states. [2020-09-24 19:25:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:03,394 INFO L93 Difference]: Finished difference Result 268 states and 286 transitions. [2020-09-24 19:25:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 19:25:03,395 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 135 [2020-09-24 19:25:03,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:03,397 INFO L225 Difference]: With dead ends: 268 [2020-09-24 19:25:03,397 INFO L226 Difference]: Without dead ends: 240 [2020-09-24 19:25:03,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2020-09-24 19:25:03,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-24 19:25:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 195. [2020-09-24 19:25:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-24 19:25:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 209 transitions. [2020-09-24 19:25:03,414 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 209 transitions. Word has length 135 [2020-09-24 19:25:03,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:03,414 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 209 transitions. [2020-09-24 19:25:03,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 19:25:03,415 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 209 transitions. [2020-09-24 19:25:03,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 19:25:03,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:03,416 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:03,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:25:03,417 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:03,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:03,417 INFO L82 PathProgramCache]: Analyzing trace with hash -414346707, now seen corresponding path program 1 times [2020-09-24 19:25:03,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:03,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128447371] [2020-09-24 19:25:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:25:03,493 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:25:03,494 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:25:03,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:25:03,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:25:03 BoogieIcfgContainer [2020-09-24 19:25:03,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:25:03,561 INFO L168 Benchmark]: Toolchain (without parser) took 27344.70 ms. Allocated memory was 139.5 MB in the beginning and 510.1 MB in the end (delta: 370.7 MB). Free memory was 101.8 MB in the beginning and 222.7 MB in the end (delta: -120.9 MB). Peak memory consumption was 249.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:25:03,562 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:25:03,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.82 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.1 MB in the beginning and 168.0 MB in the end (delta: -66.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:25:03,563 INFO L168 Benchmark]: Boogie Preprocessor took 91.06 ms. Allocated memory is still 203.4 MB. Free memory was 168.0 MB in the beginning and 165.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:25:03,564 INFO L168 Benchmark]: RCFGBuilder took 758.28 ms. Allocated memory is still 203.4 MB. Free memory was 165.3 MB in the beginning and 114.4 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:25:03,565 INFO L168 Benchmark]: TraceAbstraction took 25786.70 ms. Allocated memory was 203.4 MB in the beginning and 510.1 MB in the end (delta: 306.7 MB). Free memory was 113.7 MB in the beginning and 222.7 MB in the end (delta: -108.9 MB). Peak memory consumption was 197.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:25:03,568 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 697.82 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.1 MB in the beginning and 168.0 MB in the end (delta: -66.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.06 ms. Allocated memory is still 203.4 MB. Free memory was 168.0 MB in the beginning and 165.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 758.28 ms. Allocated memory is still 203.4 MB. Free memory was 165.3 MB in the beginning and 114.4 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25786.70 ms. Allocated memory was 203.4 MB in the beginning and 510.1 MB in the end (delta: 306.7 MB). Free memory was 113.7 MB in the beginning and 222.7 MB in the end (delta: -108.9 MB). Peak memory consumption was 197.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 605]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L588] const int len = 5; [L589] CALL, EXPR dll_create(len) [L568] DLL head = ((void *)0); [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND FALSE !(\read(head)) [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND FALSE !(len > 0) [L585] return head; [L589] RET, EXPR dll_create(len) [L589] DLL head = dll_create(len); [L590] head->next [L590] COND TRUE head->next [L591] EXPR head->data_0 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] EXPR head->data_1 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] EXPR head->data_2 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L605] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 112 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.6s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 910 SDtfs, 1536 SDslu, 5382 SDs, 0 SdLazy, 3107 SolverSat, 213 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 316 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 992 NumberOfCodeBlocks, 992 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 847 ConstructedInterpolants, 0 QuantifiedInterpolants, 389674 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 575/828 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...