/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/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:19:26,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:19:26,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:19:26,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:19:26,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:19:26,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:19:26,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:19:26,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:19:26,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:19:26,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:19:26,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:19:26,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:19:26,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:19:26,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:19:26,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:19:26,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:19:26,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:19:26,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:19:26,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:19:26,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:19:26,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:19:26,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:19:26,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:19:26,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:19:26,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:19:26,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:19:26,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:19:26,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:19:26,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:19:26,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:19:26,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:19:26,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:19:26,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:19:26,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:19:26,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:19:26,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:19:26,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:19:26,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:19:26,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:19:26,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:19:26,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:19:26,937 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 01:19:26,990 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:19:26,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:19:26,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:19:26,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:19:26,996 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:19:26,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:19:26,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:19:26,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:19:26,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:19:26,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:19:26,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:19:26,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:19:26,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:19:26,999 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:19:27,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:19:27,000 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:19:27,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:19:27,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:19:27,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:19:27,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:19:27,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:19:27,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:19:27,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:19:27,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:19:27,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:19:27,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:19:27,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:19:27,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:19:27,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:19:27,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:19:27,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:19:27,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:19:27,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:19:27,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:19:27,480 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:19:27,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-10-27 01:19:27,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d3f226a9/f1a8a2abf2084cdbac2f1be94a9fd3d9/FLAG9225f64b0 [2020-10-27 01:19:28,387 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:19:28,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-10-27 01:19:28,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d3f226a9/f1a8a2abf2084cdbac2f1be94a9fd3d9/FLAG9225f64b0 [2020-10-27 01:19:28,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d3f226a9/f1a8a2abf2084cdbac2f1be94a9fd3d9 [2020-10-27 01:19:28,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:19:28,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:19:28,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:19:28,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:19:28,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:19:28,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:19:28" (1/1) ... [2020-10-27 01:19:28,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec8c503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:28, skipping insertion in model container [2020-10-27 01:19:28,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:19:28" (1/1) ... [2020-10-27 01:19:28,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:19:28,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:19:29,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:19:29,285 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:19:29,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:19:29,420 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:19:29,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:29 WrapperNode [2020-10-27 01:19:29,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:19:29,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:19:29,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:19:29,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:19:29,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:29" (1/1) ... [2020-10-27 01:19:29,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:29" (1/1) ... [2020-10-27 01:19:29,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:29" (1/1) ... [2020-10-27 01:19:29,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:29" (1/1) ... [2020-10-27 01:19:29,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:29" (1/1) ... [2020-10-27 01:19:29,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:29" (1/1) ... [2020-10-27 01:19:29,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:29" (1/1) ... [2020-10-27 01:19:29,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:19:29,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:19:29,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:19:29,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:19:29,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:29" (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 01:19:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:19:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:19:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:19:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:19:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:19:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-27 01:19:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-27 01:19:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-27 01:19:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 01:19:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:19:29,666 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:19:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:19:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:19:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:19:29,667 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:19:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:19:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:19:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:19:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:19:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:19:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:19:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:19:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:19:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:19:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:19:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:19:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:19:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:19:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:19:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:19:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:19:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:19:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:19:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:19:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:19:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-27 01:19:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-27 01:19:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-27 01:19:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:19:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:19:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:19:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:19:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:19:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:19:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:19:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:19:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:19:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:19:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:19:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:19:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:19:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:19:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:19:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:19:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:19:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:19:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:19:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:19:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:19:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:19:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:19:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:19:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:19:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:19:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:19:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:19:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:19:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:19:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:19:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:19:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:19:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:19:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:19:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:19:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:19:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:19:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:19:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:19:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:19:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 01:19:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:19:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 01:19:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:19:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:19:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 01:19:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:19:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:19:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:19:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:19:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:19:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:19:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:19:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:19:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:19:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:19:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:19:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:19:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:19:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:19:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:19:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:19:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:19:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:19:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:19:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:19:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:19:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:19:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:19:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:19:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:19:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:19:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:19:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:19:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:19:29,688 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:19:29,688 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:19:29,688 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:19:29,689 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:19:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:19:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:19:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:19:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:19:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:19:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 01:19:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:19:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:19:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:19:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:19:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:19:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:19:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:19:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:19:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:19:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:19:30,277 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 01:19:30,410 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:19:30,411 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 01:19:30,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:19:30 BoogieIcfgContainer [2020-10-27 01:19:30,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:19:30,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:19:30,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:19:30,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:19:30,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:19:28" (1/3) ... [2020-10-27 01:19:30,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1542e9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:19:30, skipping insertion in model container [2020-10-27 01:19:30,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:19:29" (2/3) ... [2020-10-27 01:19:30,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1542e9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:19:30, skipping insertion in model container [2020-10-27 01:19:30,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:19:30" (3/3) ... [2020-10-27 01:19:30,422 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-10-27 01:19:30,435 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:19:30,441 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:19:30,456 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:19:30,486 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:19:30,486 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:19:30,486 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:19:30,487 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:19:30,487 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:19:30,487 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:19:30,487 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:19:30,487 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:19:30,506 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-27 01:19:30,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 01:19:30,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:30,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:30,514 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:30,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:30,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1727656477, now seen corresponding path program 1 times [2020-10-27 01:19:30,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:30,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028504952] [2020-10-27 01:19:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:30,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:30,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:30,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:31,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:31,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:19:31,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:19:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-27 01:19:31,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:19:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:19:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:19:31,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:19:31,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:31,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:31,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:31,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:31,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:31,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 01:19:31,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:31,365 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 01:19:31,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028504952] [2020-10-27 01:19:31,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:19:31,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:19:31,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118401086] [2020-10-27 01:19:31,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:19:31,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:31,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:19:31,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:19:31,393 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-10-27 01:19:31,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:31,657 INFO L93 Difference]: Finished difference Result 79 states and 113 transitions. [2020-10-27 01:19:31,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:19:31,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-27 01:19:31,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:31,669 INFO L225 Difference]: With dead ends: 79 [2020-10-27 01:19:31,669 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 01:19:31,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:19:31,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 01:19:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2020-10-27 01:19:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 01:19:31,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-27 01:19:31,720 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 17 [2020-10-27 01:19:31,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:31,721 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-27 01:19:31,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:19:31,721 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-27 01:19:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 01:19:31,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:31,722 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:31,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:19:31,723 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:31,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:31,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1549917714, now seen corresponding path program 1 times [2020-10-27 01:19:31,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:31,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787141833] [2020-10-27 01:19:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:31,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:31,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:31,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:19:31,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 01:19:31,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:19:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:19:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:19:31,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:31,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:31,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:31,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:31,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:19:31,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:31,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:31,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:19:31,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787141833] [2020-10-27 01:19:31,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:19:31,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:19:31,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127686022] [2020-10-27 01:19:31,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:19:31,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:31,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:19:31,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:19:31,958 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 6 states. [2020-10-27 01:19:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:32,104 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-10-27 01:19:32,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:19:32,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-27 01:19:32,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:32,106 INFO L225 Difference]: With dead ends: 53 [2020-10-27 01:19:32,106 INFO L226 Difference]: Without dead ends: 43 [2020-10-27 01:19:32,108 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 01:19:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-27 01:19:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2020-10-27 01:19:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 01:19:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-27 01:19:32,115 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 21 [2020-10-27 01:19:32,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:32,116 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-27 01:19:32,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:19:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-27 01:19:32,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 01:19:32,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:32,117 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:32,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:19:32,117 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:32,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1510356189, now seen corresponding path program 1 times [2020-10-27 01:19:32,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:32,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639014483] [2020-10-27 01:19:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:32,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:32,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:32,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:19:32,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:32,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 01:19:32,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:32,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:19:32,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 01:19:32,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:19:32,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:32,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:32,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:32,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:32,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:32,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:19:32,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:32,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:19:32,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639014483] [2020-10-27 01:19:32,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:19:32,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:19:32,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459923273] [2020-10-27 01:19:32,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:19:32,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:32,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:19:32,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:19:32,305 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 6 states. [2020-10-27 01:19:32,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:32,429 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-10-27 01:19:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:19:32,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-27 01:19:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:32,430 INFO L225 Difference]: With dead ends: 51 [2020-10-27 01:19:32,431 INFO L226 Difference]: Without dead ends: 39 [2020-10-27 01:19:32,431 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 01:19:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-27 01:19:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2020-10-27 01:19:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 01:19:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 01:19:32,438 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2020-10-27 01:19:32,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:32,438 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 01:19:32,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:19:32,438 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 01:19:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 01:19:32,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:32,439 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:32,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:19:32,440 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:32,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:32,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1100497208, now seen corresponding path program 1 times [2020-10-27 01:19:32,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:32,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350698200] [2020-10-27 01:19:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:32,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:32,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:33,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:33,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 01:19:33,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:19:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-27 01:19:33,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:19:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:19:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:19:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:33,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:19:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:19:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:19:33,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:19:33,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:19:33,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:19:33,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:19:33,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:19:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:19:33,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:19:33,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:19:33,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:19:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:19:33,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350698200] [2020-10-27 01:19:33,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:19:33,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 01:19:33,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374025508] [2020-10-27 01:19:33,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 01:19:33,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:19:33,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 01:19:33,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:19:33,684 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 10 states. [2020-10-27 01:19:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:19:33,928 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-27 01:19:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:19:33,928 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-27 01:19:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:19:33,930 INFO L225 Difference]: With dead ends: 63 [2020-10-27 01:19:33,930 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 01:19:33,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:19:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 01:19:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38. [2020-10-27 01:19:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 01:19:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-27 01:19:33,939 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 25 [2020-10-27 01:19:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:19:33,939 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-27 01:19:33,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 01:19:33,939 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-27 01:19:33,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 01:19:33,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:19:33,940 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:19:33,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:19:33,941 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:19:33,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:19:33,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1965028247, now seen corresponding path program 1 times [2020-10-27 01:19:33,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:19:33,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739348531] [2020-10-27 01:19:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:19:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:19:33,959 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:19:33,960 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:19:33,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:19:33,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:19:33 BoogieIcfgContainer [2020-10-27 01:19:33,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:19:33,985 INFO L168 Benchmark]: Toolchain (without parser) took 5278.75 ms. Allocated memory was 160.4 MB in the beginning and 218.1 MB in the end (delta: 57.7 MB). Free memory was 133.6 MB in the beginning and 126.6 MB in the end (delta: 6.9 MB). Peak memory consumption was 65.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:33,986 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 160.4 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:19:33,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.55 ms. Allocated memory is still 160.4 MB. Free memory was 133.0 MB in the beginning and 111.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:33,988 INFO L168 Benchmark]: Boogie Preprocessor took 78.36 ms. Allocated memory is still 160.4 MB. Free memory was 111.1 MB in the beginning and 108.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:33,989 INFO L168 Benchmark]: RCFGBuilder took 911.53 ms. Allocated memory is still 160.4 MB. Free memory was 108.4 MB in the beginning and 102.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:33,990 INFO L168 Benchmark]: TraceAbstraction took 3568.09 ms. Allocated memory was 160.4 MB in the beginning and 218.1 MB in the end (delta: 57.7 MB). Free memory was 101.9 MB in the beginning and 126.6 MB in the end (delta: -24.7 MB). Peak memory consumption was 34.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:19:33,993 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 160.4 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 709.55 ms. Allocated memory is still 160.4 MB. Free memory was 133.0 MB in the beginning and 111.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.36 ms. Allocated memory is still 160.4 MB. Free memory was 111.1 MB in the beginning and 108.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 911.53 ms. Allocated memory is still 160.4 MB. Free memory was 108.4 MB in the beginning and 102.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3568.09 ms. Allocated memory was 160.4 MB in the beginning and 218.1 MB in the end (delta: 57.7 MB). Free memory was 101.9 MB in the beginning and 126.6 MB in the end (delta: -24.7 MB). Peak memory consumption was 34.0 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] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) [L536] p = a [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) [L539] p->h = 1 [L543] t = (List) malloc(sizeof(struct node)) [L544] COND FALSE !(t == 0) [L545] p->n = t [L546] EXPR p->n [L546] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 [L549] p = a [L550] COND TRUE \read(flag) [L551] EXPR p->h [L551] COND FALSE !(p->h == 2) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list_flag-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.4s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 150 SDslu, 258 SDs, 0 SdLazy, 406 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 52 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 10528 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 4/6 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...