/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:11:02,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:11:02,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:11:02,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:11:02,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:11:02,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:11:02,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:11:02,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:11:02,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:11:02,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:11:02,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:11:02,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:11:02,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:11:02,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:11:02,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:11:02,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:11:02,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:11:02,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:11:02,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:11:02,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:11:02,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:11:02,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:11:02,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:11:02,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:11:02,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:11:02,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:11:02,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:11:02,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:11:02,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:11:02,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:11:02,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:11:02,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:11:02,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:11:02,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:11:02,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:11:02,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:11:02,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:11:02,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:11:02,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:11:02,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:11:02,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:11:02,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:11:02,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:11:02,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:11:02,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:11:02,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:11:02,605 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:11:02,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:11:02,606 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:11:02,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:11:02,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:11:02,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:11:02,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:11:02,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:11:02,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:11:02,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:11:02,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:11:02,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:11:02,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:11:02,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:11:02,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:11:02,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:11:02,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:11:02,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:11:02,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:11:02,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:11:02,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:11:02,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:11:02,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:11:02,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:11:02,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:11:02,612 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:11:03,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:11:03,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:11:03,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:11:03,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:11:03,137 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:11:03,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-09-25 11:11:03,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/594b00d6d/7972936bac294bd0a79969145235c62f/FLAG01174f335 [2020-09-25 11:11:03,900 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:11:03,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-09-25 11:11:03,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/594b00d6d/7972936bac294bd0a79969145235c62f/FLAG01174f335 [2020-09-25 11:11:04,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/594b00d6d/7972936bac294bd0a79969145235c62f [2020-09-25 11:11:04,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:11:04,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:11:04,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:11:04,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:11:04,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:11:04,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:11:04" (1/1) ... [2020-09-25 11:11:04,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333f50dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:04, skipping insertion in model container [2020-09-25 11:11:04,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:11:04" (1/1) ... [2020-09-25 11:11:04,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:11:04,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:11:04,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:11:04,696 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:11:04,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:11:04,855 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:11:04,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:04 WrapperNode [2020-09-25 11:11:04,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:11:04,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:11:04,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:11:04,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:11:04,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:04" (1/1) ... [2020-09-25 11:11:04,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:04" (1/1) ... [2020-09-25 11:11:04,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:04" (1/1) ... [2020-09-25 11:11:04,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:04" (1/1) ... [2020-09-25 11:11:04,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:04" (1/1) ... [2020-09-25 11:11:04,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:04" (1/1) ... [2020-09-25 11:11:04,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:04" (1/1) ... [2020-09-25 11:11:04,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:11:04,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:11:04,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:11:04,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:11:04,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:11:05,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:11:05,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:11:05,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 11:11:05,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 11:11:05,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 11:11:05,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 11:11:05,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 11:11:05,020 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 11:11:05,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:11:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:11:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:11:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 11:11:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 11:11:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 11:11:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 11:11:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 11:11:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 11:11:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 11:11:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 11:11:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 11:11:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 11:11:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 11:11:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 11:11:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 11:11:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 11:11:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 11:11:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 11:11:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 11:11:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 11:11:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 11:11:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 11:11:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 11:11:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 11:11:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 11:11:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 11:11:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 11:11:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 11:11:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 11:11:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 11:11:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 11:11:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 11:11:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 11:11:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 11:11:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 11:11:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 11:11:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 11:11:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 11:11:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 11:11:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 11:11:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 11:11:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 11:11:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 11:11:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 11:11:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 11:11:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 11:11:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 11:11:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 11:11:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 11:11:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 11:11:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 11:11:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 11:11:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 11:11:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 11:11:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 11:11:05,033 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 11:11:05,033 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 11:11:05,033 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 11:11:05,034 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 11:11:05,034 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 11:11:05,035 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 11:11:05,035 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 11:11:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 11:11:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 11:11:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 11:11:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:11:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 11:11:05,037 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 11:11:05,038 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 11:11:05,038 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:11:05,038 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 11:11:05,038 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 11:11:05,038 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 11:11:05,038 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 11:11:05,038 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 11:11:05,039 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 11:11:05,039 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 11:11:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 11:11:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 11:11:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 11:11:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 11:11:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 11:11:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 11:11:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 11:11:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 11:11:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 11:11:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 11:11:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 11:11:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 11:11:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 11:11:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 11:11:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 11:11:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 11:11:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 11:11:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 11:11:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 11:11:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 11:11:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 11:11:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 11:11:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 11:11:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 11:11:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 11:11:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 11:11:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 11:11:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 11:11:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 11:11:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 11:11:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 11:11:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 11:11:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 11:11:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:11:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 11:11:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:11:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 11:11:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 11:11:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:11:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:11:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:11:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:11:05,493 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 11:11:05,690 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:11:05,690 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 11:11:05,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:11:05 BoogieIcfgContainer [2020-09-25 11:11:05,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:11:05,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:11:05,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:11:05,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:11:05,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:11:04" (1/3) ... [2020-09-25 11:11:05,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570f2aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:11:05, skipping insertion in model container [2020-09-25 11:11:05,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:04" (2/3) ... [2020-09-25 11:11:05,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570f2aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:11:05, skipping insertion in model container [2020-09-25 11:11:05,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:11:05" (3/3) ... [2020-09-25 11:11:05,705 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-09-25 11:11:05,718 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:11:05,729 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:11:05,751 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:11:05,780 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:11:05,780 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:11:05,780 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:11:05,780 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:11:05,781 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:11:05,781 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:11:05,781 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:11:05,781 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:11:05,804 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-09-25 11:11:05,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 11:11:05,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:05,815 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] [2020-09-25 11:11:05,815 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:05,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1409516089, now seen corresponding path program 1 times [2020-09-25 11:11:05,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:05,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249559248] [2020-09-25 11:11:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:06,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:06,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:06,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:06,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:11:06,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:11:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 11:11:06,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:06,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:06,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:11:06,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 11:11:06,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:11:06,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 11:11:06,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:06,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:06,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:06,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:11:06,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:06,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:11:06,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:06,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:06,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:11:06,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249559248] [2020-09-25 11:11:06,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:11:06,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:11:06,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903108700] [2020-09-25 11:11:06,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:11:06,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:06,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:11:06,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:11:06,724 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 7 states. [2020-09-25 11:11:07,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:07,170 INFO L93 Difference]: Finished difference Result 165 states and 200 transitions. [2020-09-25 11:11:07,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:11:07,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-09-25 11:11:07,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:07,191 INFO L225 Difference]: With dead ends: 165 [2020-09-25 11:11:07,191 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 11:11:07,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:11:07,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 11:11:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 63. [2020-09-25 11:11:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 11:11:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-09-25 11:11:07,288 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 26 [2020-09-25 11:11:07,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:07,290 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-09-25 11:11:07,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:11:07,290 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-09-25 11:11:07,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 11:11:07,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:07,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:11:07,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:11:07,295 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:07,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:07,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1477911671, now seen corresponding path program 1 times [2020-09-25 11:11:07,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:07,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315225313] [2020-09-25 11:11:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:07,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:07,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 11:11:07,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:07,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 11:11:07,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:07,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:11:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 11:11:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:11:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:07,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:07,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:07,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:11:07,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:07,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:11:07,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:07,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:07,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:11:07,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315225313] [2020-09-25 11:11:07,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:11:07,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:11:07,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774248569] [2020-09-25 11:11:07,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:11:07,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:07,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:11:07,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:11:07,606 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 7 states. [2020-09-25 11:11:07,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:07,841 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-09-25 11:11:07,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:11:07,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 11:11:07,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:07,844 INFO L225 Difference]: With dead ends: 117 [2020-09-25 11:11:07,844 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 11:11:07,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:11:07,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 11:11:07,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 61. [2020-09-25 11:11:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 11:11:07,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-09-25 11:11:07,855 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 36 [2020-09-25 11:11:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:07,855 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-09-25 11:11:07,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:11:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-09-25 11:11:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 11:11:07,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:07,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:11:07,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:11:07,860 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:07,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:07,860 INFO L82 PathProgramCache]: Analyzing trace with hash -380981001, now seen corresponding path program 1 times [2020-09-25 11:11:07,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:07,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483355982] [2020-09-25 11:11:07,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:08,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:08,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 11:11:08,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:08,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 11:11:08,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:08,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:11:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 11:11:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:11:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:08,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:08,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:08,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:08,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:11:08,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:08,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:11:08,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:08,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:08,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:11:08,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483355982] [2020-09-25 11:11:08,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:11:08,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:11:08,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976887019] [2020-09-25 11:11:08,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:11:08,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:08,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:11:08,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:11:08,146 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 7 states. [2020-09-25 11:11:08,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:08,333 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-09-25 11:11:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:11:08,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 11:11:08,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:08,337 INFO L225 Difference]: With dead ends: 100 [2020-09-25 11:11:08,337 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 11:11:08,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:11:08,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 11:11:08,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 55. [2020-09-25 11:11:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 11:11:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-25 11:11:08,346 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 36 [2020-09-25 11:11:08,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:08,347 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-25 11:11:08,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:11:08,347 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-25 11:11:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 11:11:08,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:08,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:11:08,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:11:08,349 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:08,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:08,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1659276919, now seen corresponding path program 1 times [2020-09-25 11:11:08,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:08,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708804308] [2020-09-25 11:11:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:11:08,377 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:11:08,377 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:11:08,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:11:08,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:11:08 BoogieIcfgContainer [2020-09-25 11:11:08,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:11:08,407 INFO L168 Benchmark]: Toolchain (without parser) took 4291.40 ms. Allocated memory was 139.5 MB in the beginning and 249.0 MB in the end (delta: 109.6 MB). Free memory was 100.2 MB in the beginning and 171.0 MB in the end (delta: -70.7 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:08,408 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 11:11:08,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.43 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 99.6 MB in the beginning and 170.4 MB in the end (delta: -70.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:08,410 INFO L168 Benchmark]: Boogie Preprocessor took 72.04 ms. Allocated memory is still 203.9 MB. Free memory was 170.4 MB in the beginning and 167.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:08,411 INFO L168 Benchmark]: RCFGBuilder took 766.64 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 121.2 MB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:08,412 INFO L168 Benchmark]: TraceAbstraction took 2706.22 ms. Allocated memory was 203.9 MB in the beginning and 249.0 MB in the end (delta: 45.1 MB). Free memory was 120.5 MB in the beginning and 171.0 MB in the end (delta: -50.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:11:08,416 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 733.43 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 99.6 MB in the beginning and 170.4 MB in the end (delta: -70.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.04 ms. Allocated memory is still 203.9 MB. Free memory was 170.4 MB in the beginning and 167.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 766.64 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 121.2 MB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2706.22 ms. Allocated memory was 203.9 MB in the beginning and 249.0 MB in the end (delta: 45.1 MB). Free memory was 120.5 MB in the beginning and 171.0 MB in the end (delta: -50.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) [L524] COND FALSE !(a == 0) [L525] p = a [L526] COND TRUE __VERIFIER_nondet_int() [L527] COND TRUE \read(flag) [L528] p->h = 1 [L532] t = (List) malloc(sizeof(struct node)) [L533] COND FALSE !(t == 0) [L534] p->n = t [L535] EXPR p->n [L535] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 [L538] p = a [L539] COND TRUE \read(flag) [L540] EXPR p->h [L540] COND FALSE !(p->h == 2) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 153 SDtfs, 234 SDslu, 481 SDs, 0 SdLazy, 471 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=1, 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, 121 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 7960 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 4/4 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...