/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:15:15,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:15:15,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:15:15,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:15:15,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:15:15,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:15:15,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:15:15,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:15:15,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:15:15,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:15:15,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:15:15,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:15:15,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:15:15,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:15:15,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:15:15,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:15:15,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:15:15,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:15:15,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:15:15,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:15:15,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:15:15,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:15:15,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:15:15,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:15:15,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:15:15,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:15:15,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:15:15,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:15:15,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:15:15,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:15:15,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:15:15,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:15:15,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:15:15,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:15:15,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:15:15,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:15:15,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:15:15,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:15:15,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:15:15,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:15:15,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:15:15,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:15:15,992 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:15:15,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:15:15,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:15:15,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:15:15,995 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:15:15,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:15:15,996 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:15:15,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:15:15,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:15:15,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:15:15,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:15:15,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:15:15,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:15:15,999 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:15:15,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:15:15,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:15:15,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:15:16,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:15:16,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:15:16,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:15:16,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:15:16,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:15:16,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:15:16,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:15:16,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:15:16,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:15:16,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:15:16,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:15:16,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:15:16,002 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:15:16,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:15:16,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:15:16,479 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:15:16,481 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:15:16,482 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:15:16,483 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext.i [2020-09-25 03:15:16,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8de20c5ea/e0e3157566e246dc90674b7d3d0d2339/FLAG41d6b9438 [2020-09-25 03:15:17,248 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:15:17,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext-properties/list-ext.i [2020-09-25 03:15:17,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8de20c5ea/e0e3157566e246dc90674b7d3d0d2339/FLAG41d6b9438 [2020-09-25 03:15:17,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8de20c5ea/e0e3157566e246dc90674b7d3d0d2339 [2020-09-25 03:15:17,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:15:17,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:15:17,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:17,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:15:17,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:15:17,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:17" (1/1) ... [2020-09-25 03:15:17,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:17, skipping insertion in model container [2020-09-25 03:15:17,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:17" (1/1) ... [2020-09-25 03:15:17,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:15:17,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:15:18,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:18,067 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:15:18,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:18,178 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:15:18,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18 WrapperNode [2020-09-25 03:15:18,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:18,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:15:18,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:15:18,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:15:18,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:15:18,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:15:18,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:15:18,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:15:18,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:15:18,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:15:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:15:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 03:15:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 03:15:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 03:15:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 03:15:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 03:15:18,346 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 03:15:18,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:15:18,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:15:18,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:15:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 03:15:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 03:15:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 03:15:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 03:15:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 03:15:18,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 03:15:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 03:15:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 03:15:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 03:15:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 03:15:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 03:15:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 03:15:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 03:15:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 03:15:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 03:15:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 03:15:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 03:15:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 03:15:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 03:15:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 03:15:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 03:15:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 03:15:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 03:15:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 03:15:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 03:15:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 03:15:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 03:15:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 03:15:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 03:15:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 03:15:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 03:15:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 03:15:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 03:15:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 03:15:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 03:15:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 03:15:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 03:15:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 03:15:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 03:15:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 03:15:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 03:15:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 03:15:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 03:15:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 03:15:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 03:15:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 03:15:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 03:15:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 03:15:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 03:15:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 03:15:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 03:15:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 03:15:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 03:15:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 03:15:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 03:15:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:15:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:15:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 03:15:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:15:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 03:15:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 03:15:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 03:15:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 03:15:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:15:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 03:15:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 03:15:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 03:15:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:15:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 03:15:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 03:15:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 03:15:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 03:15:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 03:15:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 03:15:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 03:15:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 03:15:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 03:15:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 03:15:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 03:15:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 03:15:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 03:15:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 03:15:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 03:15:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 03:15:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 03:15:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 03:15:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 03:15:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 03:15:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 03:15:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 03:15:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 03:15:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 03:15:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 03:15:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 03:15:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 03:15:18,366 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 03:15:18,366 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 03:15:18,366 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 03:15:18,366 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 03:15:18,366 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 03:15:18,366 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 03:15:18,366 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 03:15:18,367 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 03:15:18,367 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 03:15:18,367 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 03:15:18,367 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 03:15:18,367 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 03:15:18,367 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 03:15:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:15:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:15:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:15:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:15:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:15:18,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:15:18,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:15:18,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:15:18,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:15:18,765 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 03:15:19,067 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:15:19,068 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 03:15:19,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:19 BoogieIcfgContainer [2020-09-25 03:15:19,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:15:19,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:15:19,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:15:19,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:15:19,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:15:17" (1/3) ... [2020-09-25 03:15:19,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1016201b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:19, skipping insertion in model container [2020-09-25 03:15:19,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (2/3) ... [2020-09-25 03:15:19,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1016201b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:19, skipping insertion in model container [2020-09-25 03:15:19,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:19" (3/3) ... [2020-09-25 03:15:19,084 INFO L109 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-09-25 03:15:19,095 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:15:19,107 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:15:19,131 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:15:19,162 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:15:19,162 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:15:19,162 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:15:19,163 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:15:19,163 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:15:19,163 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:15:19,163 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:15:19,163 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:15:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-09-25 03:15:19,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 03:15:19,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:19,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:19,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:19,207 INFO L82 PathProgramCache]: Analyzing trace with hash 450995297, now seen corresponding path program 1 times [2020-09-25 03:15:19,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:19,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226192448] [2020-09-25 03:15:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:19,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:19,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:19,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:19,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:15:19,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:15:19,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 03:15:19,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:19,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 03:15:19,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:19,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:15:19,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:19,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:19,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:19,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:19,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:19,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:15:19,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:19,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:19,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226192448] [2020-09-25 03:15:19,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:19,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:15:19,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238746054] [2020-09-25 03:15:19,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:15:19,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:19,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:15:19,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:15:19,815 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2020-09-25 03:15:20,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:20,140 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2020-09-25 03:15:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:15:20,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-25 03:15:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:20,156 INFO L225 Difference]: With dead ends: 176 [2020-09-25 03:15:20,156 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 03:15:20,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:15:20,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 03:15:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-09-25 03:15:20,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 03:15:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-09-25 03:15:20,220 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 27 [2020-09-25 03:15:20,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:20,221 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-09-25 03:15:20,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:15:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-09-25 03:15:20,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 03:15:20,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:20,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:20,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:15:20,224 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:20,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:20,225 INFO L82 PathProgramCache]: Analyzing trace with hash 797319425, now seen corresponding path program 1 times [2020-09-25 03:15:20,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:20,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252176873] [2020-09-25 03:15:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:20,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:20,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:15:20,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:15:20,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-25 03:15:20,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:20,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:15:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:15:20,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 03:15:20,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:20,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:20,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:20,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:20,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:20,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:20,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:20,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252176873] [2020-09-25 03:15:20,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:20,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:15:20,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273643946] [2020-09-25 03:15:20,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:15:20,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:20,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:15:20,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:15:20,971 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 5 states. [2020-09-25 03:15:21,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:21,206 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-09-25 03:15:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:15:21,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-25 03:15:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:21,209 INFO L225 Difference]: With dead ends: 160 [2020-09-25 03:15:21,209 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 03:15:21,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:15:21,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 03:15:21,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 86. [2020-09-25 03:15:21,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 03:15:21,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-09-25 03:15:21,222 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 39 [2020-09-25 03:15:21,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:21,223 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-09-25 03:15:21,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:15:21,223 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-09-25 03:15:21,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 03:15:21,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:21,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:21,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:15:21,226 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:21,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:21,226 INFO L82 PathProgramCache]: Analyzing trace with hash 642008030, now seen corresponding path program 1 times [2020-09-25 03:15:21,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:21,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076053484] [2020-09-25 03:15:21,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:21,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:21,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:15:21,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:21,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 03:15:21,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:15:21,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:21,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:15:21,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:21,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:21,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:21,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:21,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:21,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:21,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:15:21,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:21,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:21,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:21,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:21,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:21,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076053484] [2020-09-25 03:15:21,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:21,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:15:21,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445188313] [2020-09-25 03:15:21,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:15:21,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:21,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:15:21,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:15:21,433 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 5 states. [2020-09-25 03:15:21,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:21,624 INFO L93 Difference]: Finished difference Result 215 states and 230 transitions. [2020-09-25 03:15:21,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:15:21,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-25 03:15:21,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:21,626 INFO L225 Difference]: With dead ends: 215 [2020-09-25 03:15:21,626 INFO L226 Difference]: Without dead ends: 143 [2020-09-25 03:15:21,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:15:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-25 03:15:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 88. [2020-09-25 03:15:21,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 03:15:21,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-09-25 03:15:21,638 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 41 [2020-09-25 03:15:21,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:21,638 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-09-25 03:15:21,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:15:21,638 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-09-25 03:15:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 03:15:21,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:21,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:21,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:15:21,641 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:21,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:21,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1931735873, now seen corresponding path program 1 times [2020-09-25 03:15:21,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:21,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403960750] [2020-09-25 03:15:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:15:21,661 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:15:21,662 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:15:21,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:15:21,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:15:21 BoogieIcfgContainer [2020-09-25 03:15:21,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:15:21,691 INFO L168 Benchmark]: Toolchain (without parser) took 4202.82 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 102.2 MB in the beginning and 154.4 MB in the end (delta: -52.2 MB). Peak memory consumption was 53.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:21,692 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:15:21,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.51 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 169.9 MB in the end (delta: -68.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:21,694 INFO L168 Benchmark]: Boogie Preprocessor took 84.63 ms. Allocated memory is still 203.9 MB. Free memory was 169.9 MB in the beginning and 167.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:21,695 INFO L168 Benchmark]: RCFGBuilder took 809.22 ms. Allocated memory is still 203.9 MB. Free memory was 167.3 MB in the beginning and 113.3 MB in the end (delta: 54.0 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:21,696 INFO L168 Benchmark]: TraceAbstraction took 2612.24 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 112.6 MB in the beginning and 154.4 MB in the end (delta: -41.8 MB). Peak memory consumption was 667.4 kB. Max. memory is 7.1 GB. [2020-09-25 03:15:21,699 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 687.51 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 169.9 MB in the end (delta: -68.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.63 ms. Allocated memory is still 203.9 MB. Free memory was 169.9 MB in the beginning and 167.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 809.22 ms. Allocated memory is still 203.9 MB. Free memory was 167.3 MB in the beginning and 113.3 MB in the end (delta: 54.0 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2612.24 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 112.6 MB in the beginning and 154.4 MB in the end (delta: -41.8 MB). Peak memory consumption was 667.4 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 557]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int i = 0; [L522] int y = 0; [L523] List a = (List) malloc(sizeof(struct node)); [L524] COND FALSE !(a == 0) [L525] List t; [L526] List p = a; [L527] i < 10 && __VERIFIER_nondet_int() [L527] i < 10 && __VERIFIER_nondet_int() [L527] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L535] y < 10 && __VERIFIER_nondet_int() [L535] y < 10 && __VERIFIER_nondet_int() [L535] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L543] p->h = 3 [L544] p->n = 0 [L545] i = 0 [L546] y = 0 [L547] p = a [L548] EXPR p->h [L548] COND FALSE !(p->h == 1) [L552] EXPR p->h [L552] COND FALSE !(p->h == 2) [L556] EXPR p->h [L556] COND TRUE p->h != 3 || (i + y) < 20 [L557] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 280 SDtfs, 127 SDslu, 272 SDs, 0 SdLazy, 315 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=0, 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, 3 MinimizatonAttempts, 79 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 6052 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...