/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:38:19,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:38:19,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:38:19,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:38:19,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:38:19,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:38:19,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:38:19,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:38:19,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:38:19,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:38:19,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:38:19,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:38:19,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:38:19,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:38:19,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:38:19,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:38:19,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:38:19,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:38:19,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:38:19,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:38:19,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:38:19,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:38:19,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:38:19,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:38:19,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:38:19,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:38:19,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:38:19,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:38:19,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:38:19,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:38:19,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:38:19,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:38:19,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:38:19,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:38:19,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:38:19,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:38:19,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:38:19,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:38:19,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:38:19,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:38:19,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:38:19,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:38:19,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:38:19,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:38:19,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:38:19,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:38:19,710 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:38:19,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:38:19,711 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:38:19,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:38:19,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:38:19,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:38:19,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:38:19,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:38:19,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:38:19,713 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:38:19,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:38:19,714 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:38:19,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:38:19,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:38:19,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:38:19,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:38:19,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:38:19,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:38:19,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:38:19,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:38:19,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:38:19,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:38:19,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:38:19,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:38:19,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:38:19,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:38:20,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:38:20,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:38:20,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:38:20,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:38:20,192 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:38:20,193 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext.i [2020-09-24 21:38:20,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/609988df7/bd69c3a7174e4b88881c620982f361bd/FLAG40e05c2d9 [2020-09-24 21:38:20,808 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:38:20,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext-properties/list-ext.i [2020-09-24 21:38:20,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/609988df7/bd69c3a7174e4b88881c620982f361bd/FLAG40e05c2d9 [2020-09-24 21:38:21,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/609988df7/bd69c3a7174e4b88881c620982f361bd [2020-09-24 21:38:21,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:38:21,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:38:21,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:21,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:38:21,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:38:21,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:21" (1/1) ... [2020-09-24 21:38:21,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e20dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:21, skipping insertion in model container [2020-09-24 21:38:21,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:21" (1/1) ... [2020-09-24 21:38:21,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:38:21,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:38:21,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:21,806 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:38:21,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:21,909 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:38:21,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:21 WrapperNode [2020-09-24 21:38:21,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:21,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:38:21,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:38:21,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:38:21,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:21" (1/1) ... [2020-09-24 21:38:21,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:21" (1/1) ... [2020-09-24 21:38:21,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:21" (1/1) ... [2020-09-24 21:38:21,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:21" (1/1) ... [2020-09-24 21:38:21,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:21" (1/1) ... [2020-09-24 21:38:21,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:21" (1/1) ... [2020-09-24 21:38:21,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:21" (1/1) ... [2020-09-24 21:38:21,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:38:21,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:38:21,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:38:21,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:38:21,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:38:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:38:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:38:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 21:38:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 21:38:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-24 21:38:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-24 21:38:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-24 21:38:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 21:38:22,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:38:22,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:38:22,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:38:22,067 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 21:38:22,068 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 21:38:22,068 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 21:38:22,068 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 21:38:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 21:38:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 21:38:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 21:38:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 21:38:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 21:38:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 21:38:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 21:38:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 21:38:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 21:38:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 21:38:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 21:38:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 21:38:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 21:38:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 21:38:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-24 21:38:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-24 21:38:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-24 21:38:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 21:38:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 21:38:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 21:38:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 21:38:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 21:38:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 21:38:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 21:38:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 21:38:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 21:38:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 21:38:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 21:38:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 21:38:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 21:38:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 21:38:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 21:38:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 21:38:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 21:38:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 21:38:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 21:38:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 21:38:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 21:38:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 21:38:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 21:38:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 21:38:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 21:38:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 21:38:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 21:38:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 21:38:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 21:38:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 21:38:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 21:38:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 21:38:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 21:38:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 21:38:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:38:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 21:38:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 21:38:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:38:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 21:38:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 21:38:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 21:38:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 21:38:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:38:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 21:38:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 21:38:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 21:38:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:38:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 21:38:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 21:38:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 21:38:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 21:38:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 21:38:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 21:38:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 21:38:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 21:38:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 21:38:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 21:38:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 21:38:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 21:38:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 21:38:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 21:38:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 21:38:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 21:38:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 21:38:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 21:38:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 21:38:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 21:38:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 21:38:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 21:38:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 21:38:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 21:38:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 21:38:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 21:38:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 21:38:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 21:38:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 21:38:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 21:38:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 21:38:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 21:38:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 21:38:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 21:38:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 21:38:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 21:38:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 21:38:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 21:38:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 21:38:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 21:38:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:38:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:38:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:38:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:38:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:38:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:38:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:38:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:38:22,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:38:22,435 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 21:38:22,710 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:38:22,710 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:38:22,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:22 BoogieIcfgContainer [2020-09-24 21:38:22,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:38:22,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:38:22,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:38:22,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:38:22,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:38:21" (1/3) ... [2020-09-24 21:38:22,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8cff97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:22, skipping insertion in model container [2020-09-24 21:38:22,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:21" (2/3) ... [2020-09-24 21:38:22,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8cff97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:22, skipping insertion in model container [2020-09-24 21:38:22,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:22" (3/3) ... [2020-09-24 21:38:22,730 INFO L109 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-09-24 21:38:22,742 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:38:22,763 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:38:22,784 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:38:22,809 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:38:22,809 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:38:22,809 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:38:22,809 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:38:22,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:38:22,810 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:38:22,810 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:38:22,810 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:38:22,831 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-09-24 21:38:22,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 21:38:22,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:22,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:22,842 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:22,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:22,850 INFO L82 PathProgramCache]: Analyzing trace with hash 450995297, now seen corresponding path program 1 times [2020-09-24 21:38:22,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:22,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755294295] [2020-09-24 21:38:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:23,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:23,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:38:23,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:38:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-24 21:38:23,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:23,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 21:38:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:23,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:38:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:23,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:23,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:23,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:38:23,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:23,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:23,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755294295] [2020-09-24 21:38:23,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:23,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 21:38:23,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066364339] [2020-09-24 21:38:23,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 21:38:23,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:23,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 21:38:23,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 21:38:23,429 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2020-09-24 21:38:23,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:23,649 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2020-09-24 21:38:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 21:38:23,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-24 21:38:23,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:23,662 INFO L225 Difference]: With dead ends: 176 [2020-09-24 21:38:23,663 INFO L226 Difference]: Without dead ends: 84 [2020-09-24 21:38:23,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 21:38:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-24 21:38:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-09-24 21:38:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 21:38:23,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-09-24 21:38:23,722 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 27 [2020-09-24 21:38:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:23,722 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-09-24 21:38:23,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 21:38:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-09-24 21:38:23,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 21:38:23,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:23,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:23,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:38:23,726 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:23,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:23,726 INFO L82 PathProgramCache]: Analyzing trace with hash 797319425, now seen corresponding path program 1 times [2020-09-24 21:38:23,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:23,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393067665] [2020-09-24 21:38:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:24,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:24,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:38:24,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:38:24,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-09-24 21:38:24,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:38:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:38:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:24,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:24,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:24,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:24,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:38:24,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:24,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:24,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393067665] [2020-09-24 21:38:24,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:24,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:38:24,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047305844] [2020-09-24 21:38:24,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:38:24,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:24,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:38:24,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:38:24,540 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 5 states. [2020-09-24 21:38:24,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:24,820 INFO L93 Difference]: Finished difference Result 209 states and 224 transitions. [2020-09-24 21:38:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:38:24,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-24 21:38:24,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:24,823 INFO L225 Difference]: With dead ends: 209 [2020-09-24 21:38:24,823 INFO L226 Difference]: Without dead ends: 139 [2020-09-24 21:38:24,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:38:24,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-09-24 21:38:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-09-24 21:38:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 21:38:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-09-24 21:38:24,836 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 39 [2020-09-24 21:38:24,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:24,836 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-09-24 21:38:24,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:38:24,837 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-09-24 21:38:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 21:38:24,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:24,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:24,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:38:24,839 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:24,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1111510308, now seen corresponding path program 1 times [2020-09-24 21:38:24,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:24,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874054084] [2020-09-24 21:38:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:24,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:24,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:25,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:25,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:38:25,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:25,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-24 21:38:25,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:38:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:38:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:38:25,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:25,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:25,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:25,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:25,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:25,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:25,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:38:25,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:25,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:25,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874054084] [2020-09-24 21:38:25,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:25,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:38:25,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205254831] [2020-09-24 21:38:25,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:38:25,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:25,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:38:25,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:38:25,076 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 5 states. [2020-09-24 21:38:25,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:25,243 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2020-09-24 21:38:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:38:25,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-24 21:38:25,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:25,245 INFO L225 Difference]: With dead ends: 162 [2020-09-24 21:38:25,246 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 21:38:25,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:38:25,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 21:38:25,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 88. [2020-09-24 21:38:25,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 21:38:25,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-09-24 21:38:25,255 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 41 [2020-09-24 21:38:25,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:25,255 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-09-24 21:38:25,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:38:25,256 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-09-24 21:38:25,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 21:38:25,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:25,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:25,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:38:25,258 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:25,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:25,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1931735873, now seen corresponding path program 1 times [2020-09-24 21:38:25,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:25,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294147036] [2020-09-24 21:38:25,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:38:25,278 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:38:25,279 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:38:25,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:38:25,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:38:25 BoogieIcfgContainer [2020-09-24 21:38:25,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:38:25,308 INFO L168 Benchmark]: Toolchain (without parser) took 4185.40 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 101.2 MB in the beginning and 149.1 MB in the end (delta: -47.9 MB). Peak memory consumption was 58.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:25,309 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:38:25,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.07 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 100.5 MB in the beginning and 171.2 MB in the end (delta: -70.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:25,311 INFO L168 Benchmark]: Boogie Preprocessor took 71.34 ms. Allocated memory is still 205.5 MB. Free memory was 171.2 MB in the beginning and 168.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:25,312 INFO L168 Benchmark]: RCFGBuilder took 736.87 ms. Allocated memory is still 205.5 MB. Free memory was 168.0 MB in the beginning and 114.4 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:25,313 INFO L168 Benchmark]: TraceAbstraction took 2583.17 ms. Allocated memory was 205.5 MB in the beginning and 246.4 MB in the end (delta: 40.9 MB). Free memory was 113.8 MB in the beginning and 149.1 MB in the end (delta: -35.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:25,317 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 784.07 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 100.5 MB in the beginning and 171.2 MB in the end (delta: -70.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.34 ms. Allocated memory is still 205.5 MB. Free memory was 171.2 MB in the beginning and 168.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 736.87 ms. Allocated memory is still 205.5 MB. Free memory was 168.0 MB in the beginning and 114.4 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2583.17 ms. Allocated memory was 205.5 MB in the beginning and 246.4 MB in the end (delta: 40.9 MB). Free memory was 113.8 MB in the beginning and 149.1 MB in the end (delta: -35.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 557]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int i = 0; [L522] int y = 0; [L523] List a = (List) malloc(sizeof(struct node)); [L524] COND FALSE !(a == 0) [L525] List t; [L526] List p = a; [L527] i < 10 && __VERIFIER_nondet_int() [L527] i < 10 && __VERIFIER_nondet_int() [L527] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L535] y < 10 && __VERIFIER_nondet_int() [L535] y < 10 && __VERIFIER_nondet_int() [L535] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L543] p->h = 3 [L544] p->n = 0 [L545] i = 0 [L546] y = 0 [L547] p = a [L548] EXPR p->h [L548] COND FALSE !(p->h == 1) [L552] EXPR p->h [L552] COND FALSE !(p->h == 2) [L556] EXPR p->h [L556] COND TRUE p->h != 3 || (i + y) < 20 [L557] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 280 SDtfs, 125 SDslu, 272 SDs, 0 SdLazy, 315 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 77 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 6228 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...