/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/fo_test.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:37:55,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:37:55,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:37:55,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:37:55,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:37:55,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:37:55,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:37:55,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:37:55,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:37:55,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:37:55,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:37:55,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:37:55,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:37:55,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:37:55,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:37:55,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:37:55,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:37:55,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:37:55,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:37:55,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:37:55,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:37:55,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:37:55,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:37:55,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:37:55,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:37:55,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:37:55,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:37:55,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:37:55,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:37:55,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:37:55,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:37:55,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:37:55,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:37:55,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:37:55,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:37:55,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:37:55,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:37:55,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:37:55,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:37:55,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:37:55,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:37:55,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:37:55,553 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:37:55,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:37:55,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:37:55,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:37:55,556 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:37:55,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:37:55,556 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:37:55,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:37:55,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:37:55,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:37:55,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:37:55,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:37:55,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:37:55,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:37:55,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:37:55,558 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:37:55,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:37:55,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:37:55,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:37:55,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:37:55,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:37:55,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:37:55,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:37:55,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:37:55,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:37:55,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:37:55,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:37:55,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:37:55,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:37:55,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:37:55,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:37:55,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:37:55,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:37:55,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:37:55,991 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:37:55,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/fo_test.i [2020-10-28 14:37:56,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47d48ed66/8c03ad06e4bf4e4db2b00bacda990e7d/FLAG128dbc097 [2020-10-28 14:37:56,859 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:37:56,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/fo_test.i [2020-10-28 14:37:56,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47d48ed66/8c03ad06e4bf4e4db2b00bacda990e7d/FLAG128dbc097 [2020-10-28 14:37:57,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47d48ed66/8c03ad06e4bf4e4db2b00bacda990e7d [2020-10-28 14:37:57,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:37:57,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:37:57,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:37:57,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:37:57,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:37:57,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:37:57" (1/1) ... [2020-10-28 14:37:57,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7ff70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:57, skipping insertion in model container [2020-10-28 14:37:57,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:37:57" (1/1) ... [2020-10-28 14:37:57,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:37:57,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:37:57,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:37:57,626 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:37:57,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:37:57,770 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:37:57,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:57 WrapperNode [2020-10-28 14:37:57,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:37:57,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:37:57,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:37:57,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:37:57,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:57" (1/1) ... [2020-10-28 14:37:57,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:57" (1/1) ... [2020-10-28 14:37:57,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:57" (1/1) ... [2020-10-28 14:37:57,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:57" (1/1) ... [2020-10-28 14:37:57,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:57" (1/1) ... [2020-10-28 14:37:57,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:57" (1/1) ... [2020-10-28 14:37:57,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:57" (1/1) ... [2020-10-28 14:37:57,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:37:57,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:37:57,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:37:57,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:37:57,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:37:57,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:37:57,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:37:57,905 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:37:57,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-28 14:37:57,906 INFO L138 BoogieDeclarations]: Found implementation of procedure open [2020-10-28 14:37:57,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:37:57,906 INFO L138 BoogieDeclarations]: Found implementation of procedure l_read [2020-10-28 14:37:57,906 INFO L138 BoogieDeclarations]: Found implementation of procedure l_open [2020-10-28 14:37:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:37:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:37:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:37:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:37:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:37:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:37:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:37:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:37:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:37:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:37:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:37:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:37:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:37:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:37:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:37:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:37:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:37:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:37:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:37:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:37:57,910 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:37:57,910 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:37:57,910 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:37:57,910 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:37:57,910 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:37:57,910 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:37:57,910 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:37:57,911 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:37:57,911 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:37:57,911 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:37:57,911 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:37:57,911 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:37:57,911 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:37:57,911 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:37:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:37:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:37:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:37:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:37:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:37:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:37:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:37:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:37:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:37:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:37:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:37:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:37:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:37:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:37:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:37:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:37:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:37:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:37:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:37:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:37:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:37:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:37:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:37:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:37:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:37:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:37:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:37:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:37:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:37:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:37:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:37:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:37:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:37:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2020-10-28 14:37:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:37:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:37:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:37:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:37:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:37:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:37:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:37:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:37:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:37:57,939 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:37:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:37:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:37:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:37:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:37:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:37:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:37:57,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:37:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:37:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:37:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:37:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:37:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:37:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:37:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:37:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:37:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:37:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:37:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:37:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:37:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:37:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:37:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:37:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:37:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:37:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure posix_openpt [2020-10-28 14:37:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:37:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-28 14:37:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2020-10-28 14:37:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure fstat [2020-10-28 14:37:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure fstatat [2020-10-28 14:37:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2020-10-28 14:37:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure chmod [2020-10-28 14:37:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure lchmod [2020-10-28 14:37:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure fchmod [2020-10-28 14:37:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure fchmodat [2020-10-28 14:37:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure umask [2020-10-28 14:37:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkdir [2020-10-28 14:37:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkdirat [2020-10-28 14:37:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure mknod [2020-10-28 14:37:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure mknodat [2020-10-28 14:37:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkfifo [2020-10-28 14:37:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkfifoat [2020-10-28 14:37:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure utimensat [2020-10-28 14:37:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure futimens [2020-10-28 14:37:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure __fxstat [2020-10-28 14:37:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure __xstat [2020-10-28 14:37:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure __lxstat [2020-10-28 14:37:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure __fxstatat [2020-10-28 14:37:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure __xmknod [2020-10-28 14:37:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure __xmknodat [2020-10-28 14:37:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure fcntl [2020-10-28 14:37:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure open [2020-10-28 14:37:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure openat [2020-10-28 14:37:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure openat64 [2020-10-28 14:37:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure creat [2020-10-28 14:37:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure lockf [2020-10-28 14:37:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure posix_fadvise [2020-10-28 14:37:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure posix_fallocate [2020-10-28 14:37:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 14:37:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:37:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure l_read [2020-10-28 14:37:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure l_open [2020-10-28 14:37:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:37:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:37:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:37:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:37:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:37:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:37:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:37:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:37:58,484 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:37:58,485 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 14:37:58,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:37:58 BoogieIcfgContainer [2020-10-28 14:37:58,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:37:58,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:37:58,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:37:58,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:37:58,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:37:57" (1/3) ... [2020-10-28 14:37:58,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592ba9eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:37:58, skipping insertion in model container [2020-10-28 14:37:58,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:37:57" (2/3) ... [2020-10-28 14:37:58,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592ba9eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:37:58, skipping insertion in model container [2020-10-28 14:37:58,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:37:58" (3/3) ... [2020-10-28 14:37:58,496 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2020-10-28 14:37:58,508 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:37:58,512 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:37:58,524 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:37:58,547 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:37:58,547 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:37:58,548 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:37:58,548 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:37:58,548 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:37:58,548 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:37:58,548 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:37:58,548 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:37:58,565 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-28 14:37:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:37:58,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:37:58,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:37:58,571 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:37:58,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:37:58,577 INFO L82 PathProgramCache]: Analyzing trace with hash -214875169, now seen corresponding path program 1 times [2020-10-28 14:37:58,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:37:58,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560558291] [2020-10-28 14:37:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:37:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:58,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:59,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:59,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 14:37:59,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:59,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-28 14:37:59,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:59,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:37:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:37:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 14:37:59,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:37:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:59,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:59,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:59,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:37:59,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:59,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 14:37:59,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:59,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:59,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:37:59,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:59,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:37:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:37:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:37:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:37:59,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:37:59,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:37:59,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:37:59,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:37:59,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 14:37:59,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:37:59,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:37:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:37:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:37:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 14:37:59,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:37:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:37:59,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560558291] [2020-10-28 14:37:59,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:37:59,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:37:59,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818820999] [2020-10-28 14:37:59,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:37:59,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:37:59,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:37:59,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:37:59,377 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-10-28 14:37:59,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:37:59,626 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-10-28 14:37:59,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:37:59,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-28 14:37:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:37:59,649 INFO L225 Difference]: With dead ends: 55 [2020-10-28 14:37:59,649 INFO L226 Difference]: Without dead ends: 20 [2020-10-28 14:37:59,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:37:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-28 14:37:59,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-28 14:37:59,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-28 14:37:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-10-28 14:37:59,716 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 19 [2020-10-28 14:37:59,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:37:59,716 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-10-28 14:37:59,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:37:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-10-28 14:37:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:37:59,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:37:59,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:37:59,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:37:59,720 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:37:59,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:37:59,724 INFO L82 PathProgramCache]: Analyzing trace with hash 486189409, now seen corresponding path program 1 times [2020-10-28 14:37:59,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:37:59,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825918531] [2020-10-28 14:37:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:37:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:37:59,774 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:37:59,774 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:37:59,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:37:59,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:37:59 BoogieIcfgContainer [2020-10-28 14:37:59,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:37:59,809 INFO L168 Benchmark]: Toolchain (without parser) took 2673.88 ms. Allocated memory was 160.4 MB in the beginning and 195.0 MB in the end (delta: 34.6 MB). Free memory was 135.3 MB in the beginning and 155.1 MB in the end (delta: -19.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:37:59,810 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 160.4 MB. Free memory is still 134.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:37:59,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.48 ms. Allocated memory is still 160.4 MB. Free memory was 134.6 MB in the beginning and 108.8 MB in the end (delta: 25.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:37:59,813 INFO L168 Benchmark]: Boogie Preprocessor took 65.59 ms. Allocated memory is still 160.4 MB. Free memory was 108.8 MB in the beginning and 106.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:37:59,814 INFO L168 Benchmark]: RCFGBuilder took 648.03 ms. Allocated memory is still 160.4 MB. Free memory was 106.3 MB in the beginning and 106.3 MB in the end (delta: -68.6 kB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:37:59,816 INFO L168 Benchmark]: TraceAbstraction took 1315.95 ms. Allocated memory was 160.4 MB in the beginning and 195.0 MB in the end (delta: 34.6 MB). Free memory was 105.8 MB in the beginning and 155.1 MB in the end (delta: -49.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:37:59,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 160.4 MB. Free memory is still 134.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 628.48 ms. Allocated memory is still 160.4 MB. Free memory was 134.6 MB in the beginning and 108.8 MB in the end (delta: 25.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.59 ms. Allocated memory is still 160.4 MB. Free memory was 108.8 MB in the beginning and 106.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 648.03 ms. Allocated memory is still 160.4 MB. Free memory was 106.3 MB in the beginning and 106.3 MB in the end (delta: -68.6 kB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1315.95 ms. Allocated memory was 160.4 MB in the beginning and 195.0 MB in the end (delta: 34.6 MB). Free memory was 105.8 MB in the beginning and 155.1 MB in the end (delta: -49.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of large string literal at line 1160. Possible FailurePath: [L1154] int globalState = 0; [L1160] CALL, EXPR l_open("unknown",00) [L1172] int fd = open(file,flags); [L1173] COND FALSE !(fd>0) [L1174] return fd; [L1160] RET, EXPR l_open("unknown",00) [L1160] int file = l_open("unknown",00); [L1161] void* cbuf = (void*) malloc(sizeof(char)*100); [L1162] CALL l_read(file,cbuf,99) [L1167] (globalState == 1) ? (0) : __blast_assert () [L1167] CALL __blast_assert () [L962] CALL reach_error() [L3] __assert_fail("0", "fo_test.i", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 35 SDslu, 12 SDs, 0 SdLazy, 32 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1314 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...