/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-properties/simple-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:19:36,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:19:36,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:19:36,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:19:36,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:19:36,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:19:36,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:19:36,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:19:36,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:19:36,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:19:36,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:19:36,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:19:36,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:19:36,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:19:36,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:19:36,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:19:36,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:19:36,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:19:36,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:19:36,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:19:36,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:19:36,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:19:36,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:19:36,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:19:36,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:19:36,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:19:36,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:19:36,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:19:36,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:19:36,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:19:36,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:19:36,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:19:36,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:19:36,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:19:36,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:19:36,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:19:36,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:19:36,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:19:36,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:19:36,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:19:36,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:19:36,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:19:36,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:19:36,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:19:36,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:19:36,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:19:36,872 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:19:36,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:19:36,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:19:36,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:19:36,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:19:36,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:19:36,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:19:36,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:19:36,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:19:36,875 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:19:36,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:19:36,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:19:36,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:19:36,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:19:36,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:19:36,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:19:36,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:19:36,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:19:36,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:19:36,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:19:36,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:19:36,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:19:36,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:19:36,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:19:36,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:19:36,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:19:37,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:19:37,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:19:37,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:19:37,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:19:37,402 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:19:37,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple-1.i [2020-10-27 01:19:37,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ba86f042/c107698f990942cfa355d1e49d8d519a/FLAGf932dc8a9 [2020-10-27 01:19:38,137 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:19:38,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/simple-1.i [2020-10-27 01:19:38,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ba86f042/c107698f990942cfa355d1e49d8d519a/FLAGf932dc8a9 [2020-10-27 01:19:38,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ba86f042/c107698f990942cfa355d1e49d8d519a [2020-10-27 01:19:38,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:19:38,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:19:38,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:19:38,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:19:38,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:19:38,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:19:38" (1/1) ... [2020-10-27 01:19:38,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644dd04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:38, skipping insertion in model container [2020-10-27 01:19:38,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:19:38" (1/1) ... [2020-10-27 01:19:38,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:19:38,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:19:38,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:19:38,894 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:19:38,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:19:39,025 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:19:39,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:39 WrapperNode [2020-10-27 01:19:39,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:19:39,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:19:39,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:19:39,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:19:39,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:39" (1/1) ... [2020-10-27 01:19:39,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:39" (1/1) ... [2020-10-27 01:19:39,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:39" (1/1) ... [2020-10-27 01:19:39,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:39" (1/1) ... [2020-10-27 01:19:39,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:39" (1/1) ... [2020-10-27 01:19:39,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:39" (1/1) ... [2020-10-27 01:19:39,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:39" (1/1) ... [2020-10-27 01:19:39,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:19:39,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:19:39,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:19:39,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:19:39,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:19:39,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:19:39,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:19:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:19:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:19:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:19:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-27 01:19:39,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-27 01:19:39,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-27 01:19:39,174 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 01:19:39,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:19:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:19:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:19:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:19:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:19:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:19:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:19:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:19:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:19:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:19:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:19:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:19:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:19:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:19:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:19:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:19:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:19:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:19:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:19:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:19:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:19:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:19:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:19:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:19:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:19:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:19:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-27 01:19:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-27 01:19:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-27 01:19:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:19:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:19:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:19:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:19:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:19:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:19:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:19:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:19:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:19:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:19:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:19:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:19:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:19:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:19:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:19:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:19:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:19:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:19:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:19:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:19:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:19:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:19:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:19:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:19:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:19:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:19:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:19:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:19:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:19:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:19:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:19:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:19:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:19:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:19:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:19:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:19:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:19:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:19:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:19:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:19:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:19:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 01:19:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:19:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 01:19:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:19:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:19:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 01:19:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:19:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:19:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:19:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:19:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:19:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:19:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:19:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:19:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:19:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:19:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:19:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:19:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:19:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:19:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:19:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:19:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:19:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:19:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:19:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:19:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:19:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:19:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:19:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:19:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:19:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:19:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:19:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:19:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:19:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:19:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:19:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:19:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:19:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:19:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:19:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:19:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:19:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:19:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 01:19:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:19:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:19:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:19:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:19:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:19:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:19:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:19:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:19:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:19:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:19:39,634 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 01:19:39,752 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:19:39,753 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 01:19:39,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:19:39 BoogieIcfgContainer [2020-10-27 01:19:39,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:19:39,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:19:39,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:19:39,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:19:39,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:19:38" (1/3) ... [2020-10-27 01:19:39,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6f8046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:19:39, skipping insertion in model container [2020-10-27 01:19:39,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:39" (2/3) ... [2020-10-27 01:19:39,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6f8046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:19:39, skipping insertion in model container [2020-10-27 01:19:39,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:19:39" (3/3) ... [2020-10-27 01:19:39,773 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-1.i [2020-10-27 01:19:39,785 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:19:39,790 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:19:39,803 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:19:39,833 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:19:39,833 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:19:39,833 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:19:39,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:19:39,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:19:39,834 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:19:39,834 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:19:39,834 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:19:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-27 01:19:39,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 01:19:39,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:39,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:39,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:39,865 INFO L82 PathProgramCache]: Analyzing trace with hash 8074775, now seen corresponding path program 1 times [2020-10-27 01:19:39,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:39,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793045654] [2020-10-27 01:19:39,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:40,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:40,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:40,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:19:40,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:19:40,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-27 01:19:40,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:19:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:19:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:19:40,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:19:40,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:40,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:40,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:40,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:40,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:40,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:19:40,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:40,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:19:40,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793045654] [2020-10-27 01:19:40,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:19:40,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:19:40,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617432835] [2020-10-27 01:19:40,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:19:40,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:40,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:19:40,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:19:40,626 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2020-10-27 01:19:40,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:40,827 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2020-10-27 01:19:40,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:19:40,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-27 01:19:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:40,838 INFO L225 Difference]: With dead ends: 64 [2020-10-27 01:19:40,838 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 01:19:40,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:19:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 01:19:40,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-10-27 01:19:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-27 01:19:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-27 01:19:40,901 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 15 [2020-10-27 01:19:40,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:40,901 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-27 01:19:40,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:19:40,902 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-27 01:19:40,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:19:40,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:40,903 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:40,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:19:40,903 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:40,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:40,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1244663435, now seen corresponding path program 1 times [2020-10-27 01:19:40,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:40,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642430184] [2020-10-27 01:19:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:40,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:41,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:41,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:19:41,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:41,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-27 01:19:41,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:41,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:19:41,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:19:41,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:19:41,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:41,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:41,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:41,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:41,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:41,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:41,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:19:41,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:41,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:41,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:41,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:41,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:19:41,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642430184] [2020-10-27 01:19:41,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:41,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 01:19:41,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898459913] [2020-10-27 01:19:41,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:19:41,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:41,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:19:41,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:19:41,276 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2020-10-27 01:19:41,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:41,379 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-27 01:19:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:19:41,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-27 01:19:41,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:41,381 INFO L225 Difference]: With dead ends: 40 [2020-10-27 01:19:41,381 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 01:19:41,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:19:41,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 01:19:41,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2020-10-27 01:19:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-27 01:19:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-27 01:19:41,389 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2020-10-27 01:19:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:41,389 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-27 01:19:41,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:19:41,389 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-27 01:19:41,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:19:41,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:41,390 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:41,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:19:41,391 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:41,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:41,391 INFO L82 PathProgramCache]: Analyzing trace with hash 927183817, now seen corresponding path program 1 times [2020-10-27 01:19:41,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:41,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998149899] [2020-10-27 01:19:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:19:41,412 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:19:41,413 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:19:41,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:19:41,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:19:41 BoogieIcfgContainer [2020-10-27 01:19:41,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:19:41,435 INFO L168 Benchmark]: Toolchain (without parser) took 2961.70 ms. Allocated memory is still 155.2 MB. Free memory was 129.4 MB in the beginning and 85.3 MB in the end (delta: 44.1 MB). Peak memory consumption was 45.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:41,436 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 125.8 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:19:41,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.13 ms. Allocated memory is still 155.2 MB. Free memory was 128.6 MB in the beginning and 107.3 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:41,437 INFO L168 Benchmark]: Boogie Preprocessor took 60.16 ms. Allocated memory is still 155.2 MB. Free memory was 107.3 MB in the beginning and 104.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:41,438 INFO L168 Benchmark]: RCFGBuilder took 666.82 ms. Allocated memory is still 155.2 MB. Free memory was 104.8 MB in the beginning and 114.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:41,439 INFO L168 Benchmark]: TraceAbstraction took 1676.23 ms. Allocated memory is still 155.2 MB. Free memory was 114.1 MB in the beginning and 85.3 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:41,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 125.8 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 544.13 ms. Allocated memory is still 155.2 MB. Free memory was 128.6 MB in the beginning and 107.3 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.16 ms. Allocated memory is still 155.2 MB. Free memory was 107.3 MB in the beginning and 104.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 666.82 ms. Allocated memory is still 155.2 MB. Free memory was 104.8 MB in the beginning and 114.7 MB in the end (delta: -9.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1676.23 ms. Allocated memory is still 155.2 MB. Free memory was 114.1 MB in the beginning and 85.3 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] a->h = 2 [L537] COND TRUE __VERIFIER_nondet_int() [L538] p->h = 1 [L539] t = (List) malloc(sizeof(struct node)) [L540] COND FALSE !(t == 0) [L541] p->n = t [L542] EXPR p->n [L542] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 [L545] p->n = 0 [L546] p = a [L547] COND TRUE p!=0 [L548] EXPR p->h [L548] COND TRUE p->h != 2 [L549] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "simple-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 33 SDslu, 98 SDs, 0 SdLazy, 123 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 2 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2972 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 1/2 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...