/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=NARROWEST --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 02:05:59,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:05:59,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:05:59,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:05:59,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:05:59,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:05:59,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:05:59,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:05:59,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:05:59,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:05:59,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:05:59,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:05:59,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:05:59,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:05:59,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:05:59,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:05:59,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:05:59,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:05:59,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:05:59,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:05:59,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:05:59,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:05:59,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:05:59,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:05:59,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:05:59,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:05:59,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:05:59,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:05:59,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:05:59,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:05:59,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:05:59,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:05:59,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:05:59,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:05:59,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:05:59,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:05:59,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:05:59,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:05:59,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:05:59,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:05:59,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:05:59,529 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 02:05:59,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:05:59,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:05:59,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:05:59,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:05:59,558 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:05:59,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:05:59,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:05:59,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:05:59,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:05:59,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:05:59,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:05:59,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:05:59,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:05:59,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:05:59,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:05:59,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:05:59,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:05:59,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:05:59,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:05:59,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:05:59,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:05:59,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:05:59,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:05:59,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:05:59,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:05:59,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:05:59,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:05:59,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:05:59,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:05:59,565 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:06:00,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:06:00,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:06:00,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:06:00,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:06:00,123 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:06:00,124 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-09-25 02:06:00,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e9b3fe8c/c1e7f65e1bed4b5da135729a81339922/FLAG171fc71d5 [2020-09-25 02:06:00,844 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:06:00,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-09-25 02:06:00,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e9b3fe8c/c1e7f65e1bed4b5da135729a81339922/FLAG171fc71d5 [2020-09-25 02:06:01,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e9b3fe8c/c1e7f65e1bed4b5da135729a81339922 [2020-09-25 02:06:01,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:06:01,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:06:01,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:06:01,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:06:01,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:06:01,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:06:01" (1/1) ... [2020-09-25 02:06:01,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc260e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:01, skipping insertion in model container [2020-09-25 02:06:01,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:06:01" (1/1) ... [2020-09-25 02:06:01,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:06:01,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:06:01,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:06:01,744 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:06:01,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:06:01,873 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:06:01,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:01 WrapperNode [2020-09-25 02:06:01,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:06:01,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:06:01,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:06:01,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:06:01,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:01" (1/1) ... [2020-09-25 02:06:01,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:01" (1/1) ... [2020-09-25 02:06:01,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:01" (1/1) ... [2020-09-25 02:06:01,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:01" (1/1) ... [2020-09-25 02:06:01,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:01" (1/1) ... [2020-09-25 02:06:01,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:01" (1/1) ... [2020-09-25 02:06:01,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:01" (1/1) ... [2020-09-25 02:06:01,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:06:01,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:06:01,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:06:01,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:06:01,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:01" (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 02:06:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:06:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:06:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 02:06:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 02:06:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 02:06:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 02:06:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 02:06:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 02:06:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:06:02,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:06:02,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:06:02,030 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 02:06:02,030 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 02:06:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 02:06:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 02:06:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 02:06:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 02:06:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 02:06:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 02:06:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 02:06:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 02:06:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 02:06:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 02:06:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 02:06:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 02:06:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 02:06:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 02:06:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 02:06:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 02:06:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 02:06:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 02:06:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 02:06:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 02:06:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 02:06:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 02:06:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 02:06:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 02:06:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 02:06:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 02:06:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 02:06:02,040 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 02:06:02,040 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 02:06:02,040 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 02:06:02,041 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 02:06:02,041 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 02:06:02,041 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 02:06:02,041 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 02:06:02,041 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 02:06:02,041 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 02:06:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 02:06:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 02:06:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 02:06:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 02:06:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 02:06:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 02:06:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 02:06:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 02:06:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 02:06:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 02:06:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 02:06:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 02:06:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 02:06:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 02:06:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 02:06:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 02:06:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 02:06:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:06:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 02:06:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 02:06:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:06:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 02:06:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 02:06:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 02:06:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 02:06:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:06:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 02:06:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 02:06:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 02:06:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:06:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 02:06:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 02:06:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 02:06:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 02:06:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 02:06:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 02:06:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 02:06:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 02:06:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 02:06:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 02:06:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 02:06:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 02:06:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 02:06:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 02:06:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 02:06:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 02:06:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 02:06:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 02:06:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 02:06:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 02:06:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 02:06:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 02:06:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 02:06:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 02:06:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 02:06:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 02:06:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 02:06:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 02:06:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 02:06:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 02:06:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 02:06:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 02:06:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 02:06:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 02:06:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 02:06:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 02:06:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 02:06:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 02:06:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 02:06:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 02:06:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:06:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:06:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:06:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:06:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:06:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:06:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:06:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:06:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:06:02,417 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 02:06:02,606 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:06:02,607 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 02:06:02,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:06:02 BoogieIcfgContainer [2020-09-25 02:06:02,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:06:02,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:06:02,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:06:02,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:06:02,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:06:01" (1/3) ... [2020-09-25 02:06:02,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156a126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:06:02, skipping insertion in model container [2020-09-25 02:06:02,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:01" (2/3) ... [2020-09-25 02:06:02,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156a126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:06:02, skipping insertion in model container [2020-09-25 02:06:02,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:06:02" (3/3) ... [2020-09-25 02:06:02,623 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-09-25 02:06:02,636 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:06:02,646 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:06:02,670 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:06:02,704 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:06:02,704 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:06:02,704 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:06:02,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:06:02,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:06:02,705 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:06:02,705 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:06:02,705 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:06:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-09-25 02:06:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 02:06:02,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:02,746 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 02:06:02,747 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:02,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:02,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1409516089, now seen corresponding path program 1 times [2020-09-25 02:06:02,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:02,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030897606] [2020-09-25 02:06:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:02,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:03,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:03,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:03,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:03,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:06:03,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:06:03,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-09-25 02:06:03,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:03,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:03,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 02:06:03,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:06:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:03,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:03,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:03,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:03,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:06:03,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:03,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:03,624 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 02:06:03,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030897606] [2020-09-25 02:06:03,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:06:03,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:06:03,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400564004] [2020-09-25 02:06:03,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:06:03,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:03,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:06:03,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:06:03,653 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-09-25 02:06:03,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:03,799 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2020-09-25 02:06:03,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:06:03,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-25 02:06:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:03,813 INFO L225 Difference]: With dead ends: 89 [2020-09-25 02:06:03,813 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 02:06:03,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:06:03,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 02:06:03,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 02:06:03,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 02:06:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-09-25 02:06:03,862 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 26 [2020-09-25 02:06:03,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:03,862 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-09-25 02:06:03,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:06:03,863 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-09-25 02:06:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 02:06:03,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:03,864 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] [2020-09-25 02:06:03,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:06:03,865 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:03,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:03,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1836407039, now seen corresponding path program 1 times [2020-09-25 02:06:03,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:03,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557627788] [2020-09-25 02:06:03,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:04,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:04,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 02:06:04,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:04,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 02:06:04,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:06:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:06:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:06:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:04,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:04,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:04,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:04,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:04,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:06:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:04,240 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 02:06:04,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557627788] [2020-09-25 02:06:04,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:06:04,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:06:04,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027351326] [2020-09-25 02:06:04,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:06:04,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:04,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:06:04,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:06:04,254 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-09-25 02:06:04,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:04,567 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-09-25 02:06:04,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:06:04,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-09-25 02:06:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:04,571 INFO L225 Difference]: With dead ends: 122 [2020-09-25 02:06:04,571 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 02:06:04,572 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 02:06:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 02:06:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 63. [2020-09-25 02:06:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 02:06:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-09-25 02:06:04,585 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 30 [2020-09-25 02:06:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:04,586 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-09-25 02:06:04,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:06:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-09-25 02:06:04,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:06:04,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:04,588 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 02:06:04,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:06:04,588 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:04,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:04,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1477911671, now seen corresponding path program 1 times [2020-09-25 02:06:04,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:04,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545445712] [2020-09-25 02:06:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:04,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:04,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:04,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 02:06:04,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:04,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 02:06:04,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:06:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:06:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:06:04,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:04,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:04,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:04,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:04,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:04,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:06:04,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:04,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:04,817 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 02:06:04,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545445712] [2020-09-25 02:06:04,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:06:04,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:06:04,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756378905] [2020-09-25 02:06:04,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:06:04,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:04,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:06:04,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:06:04,820 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 7 states. [2020-09-25 02:06:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:05,094 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-09-25 02:06:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:06:05,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 02:06:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:05,096 INFO L225 Difference]: With dead ends: 117 [2020-09-25 02:06:05,096 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 02:06:05,097 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 02:06:05,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 02:06:05,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 61. [2020-09-25 02:06:05,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 02:06:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-09-25 02:06:05,108 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 36 [2020-09-25 02:06:05,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:05,109 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-09-25 02:06:05,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:06:05,109 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-09-25 02:06:05,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:06:05,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:05,111 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 02:06:05,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:06:05,111 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:05,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:05,111 INFO L82 PathProgramCache]: Analyzing trace with hash -380981001, now seen corresponding path program 1 times [2020-09-25 02:06:05,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:05,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214157351] [2020-09-25 02:06:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:05,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:05,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 02:06:05,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:05,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 02:06:05,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:06:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:06:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:06:05,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:05,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:05,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:05,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:06:05,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:05,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:05,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:05,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:06:05,352 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 02:06:05,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214157351] [2020-09-25 02:06:05,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:06:05,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:06:05,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132715263] [2020-09-25 02:06:05,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:06:05,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:05,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:06:05,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:06:05,355 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 7 states. [2020-09-25 02:06:05,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:05,559 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-09-25 02:06:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:06:05,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 02:06:05,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:05,563 INFO L225 Difference]: With dead ends: 100 [2020-09-25 02:06:05,563 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 02:06:05,566 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 02:06:05,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 02:06:05,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 55. [2020-09-25 02:06:05,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:06:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-25 02:06:05,580 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 36 [2020-09-25 02:06:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:05,581 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-25 02:06:05,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:06:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-25 02:06:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 02:06:05,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:05,582 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 02:06:05,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:06:05,584 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:05,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:05,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1659276919, now seen corresponding path program 1 times [2020-09-25 02:06:05,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:05,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214358249] [2020-09-25 02:06:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:06:05,625 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:06:05,625 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:06:05,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:06:05,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:06:05 BoogieIcfgContainer [2020-09-25 02:06:05,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:06:05,670 INFO L168 Benchmark]: Toolchain (without parser) took 4523.04 ms. Allocated memory was 137.9 MB in the beginning and 251.7 MB in the end (delta: 113.8 MB). Free memory was 100.2 MB in the beginning and 151.3 MB in the end (delta: -51.1 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:05,671 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 02:06:05,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.18 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.6 MB in the beginning and 167.4 MB in the end (delta: -67.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:05,675 INFO L168 Benchmark]: Boogie Preprocessor took 71.52 ms. Allocated memory is still 200.8 MB. Free memory was 167.4 MB in the beginning and 164.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:05,680 INFO L168 Benchmark]: RCFGBuilder took 665.72 ms. Allocated memory is still 200.8 MB. Free memory was 164.7 MB in the beginning and 118.1 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:05,681 INFO L168 Benchmark]: TraceAbstraction took 3052.62 ms. Allocated memory was 200.8 MB in the beginning and 251.7 MB in the end (delta: 50.9 MB). Free memory was 117.5 MB in the beginning and 151.3 MB in the end (delta: -33.8 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:05,689 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 723.18 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.6 MB in the beginning and 167.4 MB in the end (delta: -67.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.52 ms. Allocated memory is still 200.8 MB. Free memory was 167.4 MB in the beginning and 164.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 665.72 ms. Allocated memory is still 200.8 MB. Free memory was 164.7 MB in the beginning and 118.1 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3052.62 ms. Allocated memory was 200.8 MB in the beginning and 251.7 MB in the end (delta: 50.9 MB). Free memory was 117.5 MB in the beginning and 151.3 MB in the end (delta: -33.8 MB). Peak memory consumption was 17.0 MB. 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: 2.9s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 210 SDtfs, 217 SDslu, 451 SDs, 0 SdLazy, 504 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 121 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 9910 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...