/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-sets/test_add-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:20:13,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:20:13,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:20:13,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:20:13,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:20:13,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:20:13,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:20:13,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:20:13,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:20:13,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:20:13,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:20:13,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:20:13,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:20:13,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:20:13,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:20:13,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:20:13,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:20:13,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:20:13,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:20:13,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:20:13,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:20:13,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:20:13,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:20:13,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:20:13,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:20:13,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:20:13,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:20:13,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:20:13,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:20:13,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:20:13,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:20:13,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:20:13,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:20:13,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:20:13,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:20:13,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:20:13,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:20:13,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:20:13,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:20:13,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:20:13,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:20:13,224 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 [2020-10-29 09:20:13,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:20:13,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:20:13,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:20:13,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:20:13,289 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:20:13,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:20:13,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:20:13,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:20:13,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:20:13,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:20:13,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:20:13,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:20:13,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:20:13,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:20:13,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:20:13,293 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:20:13,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:20:13,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:20:13,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:20:13,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:20:13,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:20:13,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:20:13,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:20:13,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:20:13,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:20:13,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:20:13,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:20:13,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:20:13,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:20:13,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:20:13,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:20:13,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:20:13,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:20:13,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:20:13,772 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:20:13,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_add-1.i [2020-10-29 09:20:13,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aa2c17e2/1110b188806f4d349afb76c97e4fb6b6/FLAG5342bcbcf [2020-10-29 09:20:14,713 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:20:14,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-sets/test_add-1.i [2020-10-29 09:20:14,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aa2c17e2/1110b188806f4d349afb76c97e4fb6b6/FLAG5342bcbcf [2020-10-29 09:20:14,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aa2c17e2/1110b188806f4d349afb76c97e4fb6b6 [2020-10-29 09:20:14,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:20:14,932 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:20:14,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:20:14,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:20:14,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:20:14,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:20:14" (1/1) ... [2020-10-29 09:20:14,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:14, skipping insertion in model container [2020-10-29 09:20:14,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:20:14" (1/1) ... [2020-10-29 09:20:14,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:20:15,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:20:15,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:20:15,553 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:20:15,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:20:15,676 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:20:15,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:15 WrapperNode [2020-10-29 09:20:15,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:20:15,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:20:15,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:20:15,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:20:15,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:15" (1/1) ... [2020-10-29 09:20:15,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:15" (1/1) ... [2020-10-29 09:20:15,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:15" (1/1) ... [2020-10-29 09:20:15,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:15" (1/1) ... [2020-10-29 09:20:15,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:15" (1/1) ... [2020-10-29 09:20:15,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:15" (1/1) ... [2020-10-29 09:20:15,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:15" (1/1) ... [2020-10-29 09:20:15,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:20:15,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:20:15,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:20:15,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:20:15,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:15" (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 [2020-10-29 09:20:15,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:20:15,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:20:15,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:20:15,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:20:15,838 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:20:15,838 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:20:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-29 09:20:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-10-29 09:20:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-10-29 09:20:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-10-29 09:20:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-10-29 09:20:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-10-29 09:20:15,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-10-29 09:20:15,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-10-29 09:20:15,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-10-29 09:20:15,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-10-29 09:20:15,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-10-29 09:20:15,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-10-29 09:20:15,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-10-29 09:20:15,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-10-29 09:20:15,841 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-29 09:20:15,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:20:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:20:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:20:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:20:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:20:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:20:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:20:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:20:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:20:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:20:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:20:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:20:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:20:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:20:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:20:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:20:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:20:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:20:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:20:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:20:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:20:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:20:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:20:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:20:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:20:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:20:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:20:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:20:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:20:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:20:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:20:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:20:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:20:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:20:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:20:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:20:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:20:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:20:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:20:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:20:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:20:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:20:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:20:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:20:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:20:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:20:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:20:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:20:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:20:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:20:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:20:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:20:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:20:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:20:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:20:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:20:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:20:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:20:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:20:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:20:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:20:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:20:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:20:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:20:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:20:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:20:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:20:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:20:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:20:15,853 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:20:15,853 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:20:15,853 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:20:15,853 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:20:15,853 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:20:15,853 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:20:15,853 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:20:15,854 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:20:15,854 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:20:15,854 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:20:15,854 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:20:15,854 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:20:15,854 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:20:15,854 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:20:15,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:20:15,855 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:20:15,855 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:20:15,855 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:20:15,855 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:20:15,855 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:20:15,855 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:20:15,855 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:20:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:20:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:20:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:20:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:20:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:20:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:20:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:20:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:20:15,857 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:20:15,857 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:20:15,857 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:20:15,857 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:20:15,857 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:20:15,857 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:20:15,857 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:20:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:20:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:20:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:20:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:20:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-29 09:20:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:20:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-10-29 09:20:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-10-29 09:20:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:20:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-10-29 09:20:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-10-29 09:20:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-10-29 09:20:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:20:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-10-29 09:20:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-10-29 09:20:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-10-29 09:20:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-10-29 09:20:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-10-29 09:20:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-10-29 09:20:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-10-29 09:20:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-10-29 09:20:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:20:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:20:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:20:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-29 09:20:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:20:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:20:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:20:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:20:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:20:16,670 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:20:16,671 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 09:20:16,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:20:16 BoogieIcfgContainer [2020-10-29 09:20:16,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:20:16,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:20:16,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:20:16,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:20:16,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:20:14" (1/3) ... [2020-10-29 09:20:16,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23175fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:20:16, skipping insertion in model container [2020-10-29 09:20:16,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:15" (2/3) ... [2020-10-29 09:20:16,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23175fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:20:16, skipping insertion in model container [2020-10-29 09:20:16,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:20:16" (3/3) ... [2020-10-29 09:20:16,682 INFO L111 eAbstractionObserver]: Analyzing ICFG test_add-1.i [2020-10-29 09:20:16,694 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:20:16,700 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:20:16,713 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:20:16,741 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:20:16,741 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:20:16,741 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:20:16,741 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:20:16,742 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:20:16,742 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:20:16,742 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:20:16,742 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:20:16,760 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-29 09:20:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:20:16,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:20:16,768 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:20:16,768 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:20:16,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:20:16,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1016243908, now seen corresponding path program 1 times [2020-10-29 09:20:16,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:20:16,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073284791] [2020-10-29 09:20:16,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:20:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:16,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:17,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:17,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:17,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:20:17,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:20:17,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-29 09:20:17,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:17,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:20:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 09:20:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:20:17,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:20:17,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:20:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:17,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:17,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:17,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:20:17,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:20:17,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:17,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:20:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:20:17,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:20:17,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:20:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:17,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:17,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:17,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:20:17,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 09:20:17,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:17,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:20:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 09:20:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:20:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:20:17,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:20:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:17,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:17,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:17,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:20:17,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:17,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 09:20:17,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:17,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:20:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:20:17,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:20:17,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:20:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:17,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:17,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:17,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:20:17,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:17,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:20:17,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:17,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:20:17,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 09:20:17,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:20:17,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:20:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 09:20:18,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073284791] [2020-10-29 09:20:18,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:20:18,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 09:20:18,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913423491] [2020-10-29 09:20:18,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:20:18,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:20:18,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:20:18,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:20:18,033 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 6 states. [2020-10-29 09:20:18,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:20:18,531 INFO L93 Difference]: Finished difference Result 118 states and 143 transitions. [2020-10-29 09:20:18,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:20:18,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-29 09:20:18,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:20:18,544 INFO L225 Difference]: With dead ends: 118 [2020-10-29 09:20:18,545 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 09:20:18,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:20:18,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 09:20:18,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-29 09:20:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 09:20:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-29 09:20:18,607 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 30 [2020-10-29 09:20:18,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:20:18,607 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-29 09:20:18,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:20:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-29 09:20:18,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:20:18,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:20:18,610 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:20:18,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:20:18,611 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:20:18,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:20:18,612 INFO L82 PathProgramCache]: Analyzing trace with hash -20648475, now seen corresponding path program 1 times [2020-10-29 09:20:18,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:20:18,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653321189] [2020-10-29 09:20:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:20:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:18,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:18,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:18,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:20,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:20,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:20:20,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:20:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2033 [2020-10-29 09:20:20,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:20,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:20:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:20:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:20:20,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:20,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:20:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:20,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:20,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:20:20,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:20,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:20:20,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:20,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:20:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:20:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:20,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:20:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:20,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:20,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:20:20,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:20,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 09:20:20,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:20,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:20,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:20:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 09:20:20,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:20:20,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:20:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:20,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:21,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:21,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:20:21,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:21,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 09:20:21,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:21,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:21,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:20:21,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:21,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:20:21,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:20:21,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:20:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:21,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:21,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:21,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:20:21,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:21,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:20:21,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:21,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:21,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:20:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:20:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:20:21,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:20:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:20:21,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653321189] [2020-10-29 09:20:21,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:20:21,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:20:21,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445635316] [2020-10-29 09:20:21,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:20:21,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:20:21,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:20:21,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:20:21,265 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 11 states. [2020-10-29 09:20:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:20:22,794 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2020-10-29 09:20:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:20:22,794 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-29 09:20:22,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:20:22,797 INFO L225 Difference]: With dead ends: 99 [2020-10-29 09:20:22,797 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 09:20:22,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:20:22,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 09:20:22,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2020-10-29 09:20:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 09:20:22,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-10-29 09:20:22,816 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 30 [2020-10-29 09:20:22,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:20:22,817 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-10-29 09:20:22,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:20:22,817 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-10-29 09:20:22,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:20:22,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:20:22,818 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:20:22,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:20:22,819 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:20:22,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:20:22,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1344639438, now seen corresponding path program 1 times [2020-10-29 09:20:22,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:20:22,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296007848] [2020-10-29 09:20:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:20:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:22,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:22,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:23,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:23,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:20:23,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:20:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-29 09:20:23,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:23,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:20:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:20:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 09:20:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:23,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:20:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:23,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:23,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:23,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:20:23,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:20:23,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:23,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:23,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:20:23,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:23,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:20:23,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:23,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:20:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:23,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:23,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:23,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:20:23,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:20:23,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 09:20:23,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:23,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:23,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:20:23,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:20:23,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:20:23,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:23,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:20:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:23,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:23,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:23,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:20:23,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:23,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:20:23,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:23,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:23,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:20:23,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:23,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:20:23,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:23,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 09:20:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:23,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:23,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:20:23,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:23,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:20:23,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:23,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:20:23,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:20:23,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:20:23,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:20:23,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296007848] [2020-10-29 09:20:23,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:20:23,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 09:20:23,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060963583] [2020-10-29 09:20:23,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:20:23,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:20:23,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:20:23,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:20:23,796 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 8 states. [2020-10-29 09:20:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:20:24,735 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2020-10-29 09:20:24,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:20:24,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-29 09:20:24,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:20:24,740 INFO L225 Difference]: With dead ends: 98 [2020-10-29 09:20:24,740 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 09:20:24,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:20:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 09:20:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 55. [2020-10-29 09:20:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:20:24,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-10-29 09:20:24,765 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 30 [2020-10-29 09:20:24,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:20:24,766 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-10-29 09:20:24,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:20:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-10-29 09:20:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:20:24,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:20:24,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:20:24,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:20:24,770 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:20:24,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:20:24,772 INFO L82 PathProgramCache]: Analyzing trace with hash 240529569, now seen corresponding path program 1 times [2020-10-29 09:20:24,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:20:24,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259074628] [2020-10-29 09:20:24,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:20:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:24,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:26,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:26,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 09:20:26,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:20:26,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-10-29 09:20:26,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:26,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:20:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:20:26,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 09:20:26,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:20:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:26,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:26,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:20:26,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:26,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:20:26,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:26,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:20:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:20:26,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:26,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:20:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:26,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:26,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:20:26,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:26,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 09:20:26,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:26,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:20:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 09:20:26,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:26,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:20:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:26,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:26,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:20:26,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:26,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:20:26,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:26,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:26,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:20:26,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:26,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:20:26,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:20:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:27,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:27,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 09:20:27,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:27,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 09:20:27,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:27,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:20:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:20:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:27,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:20:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:27,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:27,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:20:27,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:20:27,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:27,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:20:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:20:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:27,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 09:20:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:27,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:27,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:27,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:20:27,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 09:20:27,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:27,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:20:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:20:27,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:27,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:20:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:27,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:27,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:27,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:20:27,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:27,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:20:27,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:27,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:20:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:20:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:20:27,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 09:20:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:27,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:27,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:27,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:20:27,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:20:27,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:27,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:20:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:20:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:20:27,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:20:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:20:27,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259074628] [2020-10-29 09:20:27,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:20:27,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-29 09:20:27,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11574441] [2020-10-29 09:20:27,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:20:27,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:20:27,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:20:27,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:20:27,403 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 19 states. [2020-10-29 09:20:29,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:20:29,232 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2020-10-29 09:20:29,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:20:29,233 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-29 09:20:29,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:20:29,235 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:20:29,235 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 09:20:29,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:20:29,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 09:20:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2020-10-29 09:20:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 09:20:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-10-29 09:20:29,251 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 50 [2020-10-29 09:20:29,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:20:29,251 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-10-29 09:20:29,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:20:29,251 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-10-29 09:20:29,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 09:20:29,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:20:29,253 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:20:29,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:20:29,254 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:20:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:20:29,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1605817482, now seen corresponding path program 1 times [2020-10-29 09:20:29,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:20:29,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734438474] [2020-10-29 09:20:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:20:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:20:29,282 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:20:29,282 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:20:29,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:20:29,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:20:29 BoogieIcfgContainer [2020-10-29 09:20:29,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:20:29,311 INFO L168 Benchmark]: Toolchain (without parser) took 14383.64 ms. Allocated memory was 159.4 MB in the beginning and 291.5 MB in the end (delta: 132.1 MB). Free memory was 113.3 MB in the beginning and 172.5 MB in the end (delta: -59.1 MB). Peak memory consumption was 74.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:20:29,312 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 159.4 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:20:29,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.45 ms. Allocated memory is still 159.4 MB. Free memory was 112.6 MB in the beginning and 125.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:20:29,314 INFO L168 Benchmark]: Boogie Preprocessor took 77.79 ms. Allocated memory is still 159.4 MB. Free memory was 125.8 MB in the beginning and 122.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:20:29,315 INFO L168 Benchmark]: RCFGBuilder took 916.10 ms. Allocated memory is still 159.4 MB. Free memory was 122.1 MB in the beginning and 125.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:20:29,316 INFO L168 Benchmark]: TraceAbstraction took 12633.71 ms. Allocated memory was 159.4 MB in the beginning and 291.5 MB in the end (delta: 132.1 MB). Free memory was 124.8 MB in the beginning and 172.5 MB in the end (delta: -47.7 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:20:29,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 159.4 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 743.45 ms. Allocated memory is still 159.4 MB. Free memory was 112.6 MB in the beginning and 125.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.79 ms. Allocated memory is still 159.4 MB. Free memory was 125.8 MB in the beginning and 122.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 916.10 ms. Allocated memory is still 159.4 MB. Free memory was 122.1 MB in the beginning and 125.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12633.71 ms. Allocated memory was 159.4 MB in the beginning and 291.5 MB in the end (delta: 132.1 MB). Free memory was 124.8 MB in the beginning and 172.5 MB in the end (delta: -47.7 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 562]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L662] struct ldv_list_head s1 = { &(s1), &(s1) }; [L671] CALL foo() [L665] int j = __VERIFIER_nondet_int(); [L666] CALL ldv_set_add(j, &s1) [L633] CALL, EXPR ldv_is_in_set(new, s) [L651] struct ldv_list_element *m; [L652] EXPR (s)->next [L652] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L652] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L652] COND FALSE !(&m->list != (s)) [L657] return 0; [L633] RET, EXPR ldv_is_in_set(new, s) [L633] COND TRUE !ldv_is_in_set(new, s) [L634] struct ldv_list_element *le; [L635] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L635] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L635] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L636] le->e = new [L637] CALL ldv_list_add(&le->list, s) [L605] EXPR head->next [L605] CALL __ldv_list_add(new, head, head->next) [L593] next->prev = new [L594] new->next = next [L595] new->prev = prev [L596] prev->next = new [L605] RET __ldv_list_add(new, head, head->next) [L637] RET ldv_list_add(&le->list, s) [L666] RET ldv_set_add(j, &s1) [L667] CALL ldv_is_in_set(j, &s1) [L651] struct ldv_list_element *m; [L652] EXPR (s)->next [L652] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L652] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L652] COND TRUE &m->list != (s) [L653] EXPR m->e [L653] COND TRUE m->e == e [L654] return 1; [L667] RET ldv_is_in_set(j, &s1) [L667] COND TRUE ldv_is_in_set(j, &s1) [L667] CALL reach_error() [L562] COND FALSE !(0) [L562] __assert_fail ("0", "model/ldv.h", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 22 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.5s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 452 SDslu, 252 SDs, 0 SdLazy, 1285 SolverSat, 229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 67 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 37461 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 15/19 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...