/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=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/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:16:56,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:16:56,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:16:56,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:16:56,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:16:56,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:16:56,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:16:56,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:16:56,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:16:56,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:16:56,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:16:56,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:16:56,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:16:56,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:16:56,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:16:56,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:16:56,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:16:56,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:16:56,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:16:56,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:16:56,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:16:56,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:16:56,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:16:56,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:16:56,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:16:56,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:16:56,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:16:56,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:16:56,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:16:56,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:16:56,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:16:56,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:16:56,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:16:56,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:16:56,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:16:56,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:16:56,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:16:56,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:16:56,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:16:56,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:16:56,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:16:56,216 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 18:16:56,242 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:16:56,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:16:56,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:16:56,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:16:56,244 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:16:56,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:16:56,245 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:16:56,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:16:56,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:16:56,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:16:56,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:16:56,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:16:56,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:16:56,246 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:16:56,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:16:56,247 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:16:56,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:16:56,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:16:56,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:16:56,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:16:56,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:16:56,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:16:56,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:16:56,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:16:56,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:16:56,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:16:56,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:16:56,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:16:56,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:16:56,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=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=5000;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=5000;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=5000;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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:16:56,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:16:56,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:16:56,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:16:56,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:16:56,757 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:16:56,758 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-09-24 18:16:56,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8c6b6d46/f364dab8a36e49b2bbbf8ab1aec6ebae/FLAG7696e7c44 [2020-09-24 18:16:57,479 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:16:57,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-09-24 18:16:57,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8c6b6d46/f364dab8a36e49b2bbbf8ab1aec6ebae/FLAG7696e7c44 [2020-09-24 18:16:57,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8c6b6d46/f364dab8a36e49b2bbbf8ab1aec6ebae [2020-09-24 18:16:57,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:16:57,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:16:57,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:16:57,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:16:57,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:16:57,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:16:57" (1/1) ... [2020-09-24 18:16:57,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1190dd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:57, skipping insertion in model container [2020-09-24 18:16:57,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:16:57" (1/1) ... [2020-09-24 18:16:57,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:16:57,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:16:58,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:16:58,412 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:16:58,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:16:58,563 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:16:58,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:58 WrapperNode [2020-09-24 18:16:58,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:16:58,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:16:58,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:16:58,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:16:58,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:58" (1/1) ... [2020-09-24 18:16:58,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:58" (1/1) ... [2020-09-24 18:16:58,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:58" (1/1) ... [2020-09-24 18:16:58,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:58" (1/1) ... [2020-09-24 18:16:58,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:58" (1/1) ... [2020-09-24 18:16:58,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:58" (1/1) ... [2020-09-24 18:16:58,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:58" (1/1) ... [2020-09-24 18:16:58,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:16:58,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:16:58,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:16:58,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:16:58,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:58" (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 18:16:58,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:16:58,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:16:58,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-09-24 18:16:58,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 18:16:58,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 18:16:58,760 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-24 18:16:58,760 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-09-24 18:16:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-09-24 18:16:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-09-24 18:16:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-09-24 18:16:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-09-24 18:16:58,762 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-09-24 18:16:58,762 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-09-24 18:16:58,762 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-09-24 18:16:58,762 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-09-24 18:16:58,762 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-09-24 18:16:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-09-24 18:16:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-09-24 18:16:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-09-24 18:16:58,763 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-09-24 18:16:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-09-24 18:16:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:16:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:16:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 18:16:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 18:16:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 18:16:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 18:16:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 18:16:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 18:16:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 18:16:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 18:16:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 18:16:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 18:16:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 18:16:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 18:16:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 18:16:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 18:16:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 18:16:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 18:16:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 18:16:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 18:16:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 18:16:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 18:16:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 18:16:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 18:16:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 18:16:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 18:16:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 18:16:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 18:16:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 18:16:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 18:16:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 18:16:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 18:16:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 18:16:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 18:16:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 18:16:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 18:16:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 18:16:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 18:16:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 18:16:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 18:16:58,770 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 18:16:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 18:16:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 18:16:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 18:16:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 18:16:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 18:16:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 18:16:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 18:16:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 18:16:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 18:16:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 18:16:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 18:16:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 18:16:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 18:16:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:16:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 18:16:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 18:16:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 18:16:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 18:16:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 18:16:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 18:16:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 18:16:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 18:16:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:16:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 18:16:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 18:16:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 18:16:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:16:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 18:16:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 18:16:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 18:16:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 18:16:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 18:16:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 18:16:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 18:16:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 18:16:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 18:16:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 18:16:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 18:16:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 18:16:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 18:16:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 18:16:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 18:16:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 18:16:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 18:16:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 18:16:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 18:16:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 18:16:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 18:16:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 18:16:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 18:16:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 18:16:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 18:16:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 18:16:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 18:16:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 18:16:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 18:16:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 18:16:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 18:16:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 18:16:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 18:16:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 18:16:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 18:16:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 18:16:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 18:16:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 18:16:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 18:16:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:16:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-24 18:16:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-09-24 18:16:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:16:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 18:16:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-09-24 18:16:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-09-24 18:16:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 18:16:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-09-24 18:16:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:16:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-09-24 18:16:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 18:16:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:16:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-09-24 18:16:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-09-24 18:16:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-09-24 18:16:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-09-24 18:16:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-09-24 18:16:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-09-24 18:16:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-09-24 18:16:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-09-24 18:16:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-09-24 18:16:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-09-24 18:16:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-09-24 18:16:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:16:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:16:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:16:59,863 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:16:59,863 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-09-24 18:16:59,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:59 BoogieIcfgContainer [2020-09-24 18:16:59,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:16:59,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:16:59,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:16:59,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:16:59,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:16:57" (1/3) ... [2020-09-24 18:16:59,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3925ce68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:59, skipping insertion in model container [2020-09-24 18:16:59,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:58" (2/3) ... [2020-09-24 18:16:59,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3925ce68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:59, skipping insertion in model container [2020-09-24 18:16:59,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:59" (3/3) ... [2020-09-24 18:16:59,881 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-09-24 18:16:59,895 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:16:59,906 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:16:59,930 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:16:59,965 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:16:59,965 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:16:59,965 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:16:59,965 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:16:59,966 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:16:59,966 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:16:59,966 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:16:59,966 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:16:59,998 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-09-24 18:17:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 18:17:00,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:17:00,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:00,015 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:17:00,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:17:00,024 INFO L82 PathProgramCache]: Analyzing trace with hash 575468621, now seen corresponding path program 1 times [2020-09-24 18:17:00,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:17:00,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423021350] [2020-09-24 18:17:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:17:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:00,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:00,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:00,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:01,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:05,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:05,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 18:17:05,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:17:05,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:17:05,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-24 18:17:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:17:05,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:17:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:05,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:05,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:17:05,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:05,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:17:05,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:05,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:05,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:17:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:05,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:06,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:10,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:10,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:17:10,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:17:10,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:17:10,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:10,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:10,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 18:17:10,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:10,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:10,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:17:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:10,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:10,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:14,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:15,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:15,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 18:17:15,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:17:15,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:17:15,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:15,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-24 18:17:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:17:15,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:17:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:15,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:15,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:15,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:17:15,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:15,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:17:15,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:15,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 18:17:15,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:17:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:15,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:15,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:15,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 18:17:15,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:15,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 18:17:15,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:15,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:15,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:17:15,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 18:17:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:15,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:15,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:17:15,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:15,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:17:15,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:17:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 18:17:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:15,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:15,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:15,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:17:15,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:15,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:17:15,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:15,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:15,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:15,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:17:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:17:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:15,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:15,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:15,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 18:17:15,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:15,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:17:15,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:15,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:15,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:17:15,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 18:17:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:15,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:15,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:15,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:17:15,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:15,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:17:15,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:15,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:17:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 18:17:15,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423021350] [2020-09-24 18:17:15,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:17:15,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:17:15,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432849800] [2020-09-24 18:17:15,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:17:15,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:17:15,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:17:15,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:17:15,913 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 4 states. [2020-09-24 18:17:16,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:17:16,647 INFO L93 Difference]: Finished difference Result 568 states and 767 transitions. [2020-09-24 18:17:16,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:17:16,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-24 18:17:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:17:16,676 INFO L225 Difference]: With dead ends: 568 [2020-09-24 18:17:16,676 INFO L226 Difference]: Without dead ends: 275 [2020-09-24 18:17:16,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 18:17:16,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-09-24 18:17:16,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2020-09-24 18:17:16,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-24 18:17:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 284 transitions. [2020-09-24 18:17:16,771 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 284 transitions. Word has length 85 [2020-09-24 18:17:16,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:17:16,772 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 284 transitions. [2020-09-24 18:17:16,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:17:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 284 transitions. [2020-09-24 18:17:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 18:17:16,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:17:16,781 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:16,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:17:16,782 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:17:16,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:17:16,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1893520380, now seen corresponding path program 1 times [2020-09-24 18:17:16,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:17:16,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603872062] [2020-09-24 18:17:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:17:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:16,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:16,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:17,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:21,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:21,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-24 18:17:21,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:17:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:17:21,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:17:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:17:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:17:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:21,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:17:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:21,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:21,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:21,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:17:21,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:17:21,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:21,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:17:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:22,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:22,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:22,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:26,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:26,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 18:17:26,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:17:26,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:17:26,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:26,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:17:26,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:17:26,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:17:26,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:17:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:27,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:27,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:31,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:31,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:17:31,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:17:31,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 18:17:31,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:17:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:17:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 18:17:31,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:17:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:32,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:32,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:17:32,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:32,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 18:17:32,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:17:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:17:32,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:32,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:17:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:32,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:32,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:32,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 18:17:32,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:32,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:17:32,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:32,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 18:17:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:32,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:32,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:32,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:17:32,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:32,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:17:32,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:17:32,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 18:17:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:32,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:32,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:32,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 18:17:32,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:32,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 18:17:32,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:17:32,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:32,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:17:32,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:32,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:17:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:32,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:32,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:32,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 18:17:32,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 18:17:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:17:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:17:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:17:32,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 18:17:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:32,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:32,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:32,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:17:32,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:32,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:17:32,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:32,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-24 18:17:32,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603872062] [2020-09-24 18:17:32,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:17:32,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:17:32,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002822219] [2020-09-24 18:17:32,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:17:32,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:17:32,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:17:32,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:17:32,481 INFO L87 Difference]: Start difference. First operand 255 states and 284 transitions. Second operand 7 states. [2020-09-24 18:17:33,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:17:33,776 INFO L93 Difference]: Finished difference Result 542 states and 621 transitions. [2020-09-24 18:17:33,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:17:33,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-09-24 18:17:33,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:17:33,782 INFO L225 Difference]: With dead ends: 542 [2020-09-24 18:17:33,783 INFO L226 Difference]: Without dead ends: 296 [2020-09-24 18:17:33,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:17:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-24 18:17:33,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 276. [2020-09-24 18:17:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-24 18:17:33,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 307 transitions. [2020-09-24 18:17:33,833 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 307 transitions. Word has length 87 [2020-09-24 18:17:33,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:17:33,833 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 307 transitions. [2020-09-24 18:17:33,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:17:33,833 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 307 transitions. [2020-09-24 18:17:33,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-24 18:17:33,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:17:33,838 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:17:33,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:17:33,838 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:17:33,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:17:33,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1671014528, now seen corresponding path program 1 times [2020-09-24 18:17:33,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:17:33,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218942339] [2020-09-24 18:17:33,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:17:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:34,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:34,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:36,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:38,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:38,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-09-24 18:17:38,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:17:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 18:17:38,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:38,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 18:17:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 18:17:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-24 18:17:38,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:39,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:17:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:39,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:39,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:17:39,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:17:39,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:17:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:17:39,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:17:39,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:17:39,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:17:39,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:17:39,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:17:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:17:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:17:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:39,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:40,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:17:42,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking...