/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/fo_test.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:13:06,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:13:06,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:13:06,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:13:06,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:13:06,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:13:06,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:13:06,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:13:06,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:13:06,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:13:06,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:13:06,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:13:06,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:13:06,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:13:06,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:13:06,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:13:06,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:13:06,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:13:06,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:13:06,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:13:06,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:13:06,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:13:06,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:13:06,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:13:06,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:13:06,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:13:06,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:13:06,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:13:06,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:13:06,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:13:06,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:13:06,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:13:06,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:13:06,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:13:06,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:13:06,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:13:06,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:13:06,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:13:06,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:13:06,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:13:06,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:13:06,190 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:13:06,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:13:06,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:13:06,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:13:06,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:13:06,223 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:13:06,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:13:06,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:13:06,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:13:06,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:13:06,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:13:06,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:13:06,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:13:06,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:13:06,225 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:13:06,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:13:06,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:13:06,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:13:06,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:13:06,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:13:06,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:13:06,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:13:06,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:13:06,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:13:06,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:13:06,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:13:06,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:13:06,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:13:06,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:13:06,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:13:06,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:13:06,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:13:06,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:13:06,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:13:06,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:13:06,741 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:13:06,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/fo_test.i [2020-10-27 01:13:06,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/117745051/2c70c1de4dea409b8bc91706487a5d34/FLAGd12d09144 [2020-10-27 01:13:07,574 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:13:07,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/fo_test.i [2020-10-27 01:13:07,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/117745051/2c70c1de4dea409b8bc91706487a5d34/FLAGd12d09144 [2020-10-27 01:13:07,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/117745051/2c70c1de4dea409b8bc91706487a5d34 [2020-10-27 01:13:07,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:13:07,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:13:07,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:13:07,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:13:07,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:13:07,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:13:07" (1/1) ... [2020-10-27 01:13:07,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4885e589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:07, skipping insertion in model container [2020-10-27 01:13:07,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:13:07" (1/1) ... [2020-10-27 01:13:07,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:13:07,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:13:08,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:13:08,447 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:13:08,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:13:08,582 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:13:08,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:08 WrapperNode [2020-10-27 01:13:08,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:13:08,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:13:08,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:13:08,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:13:08,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:08" (1/1) ... [2020-10-27 01:13:08,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:08" (1/1) ... [2020-10-27 01:13:08,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:08" (1/1) ... [2020-10-27 01:13:08,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:08" (1/1) ... [2020-10-27 01:13:08,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:08" (1/1) ... [2020-10-27 01:13:08,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:08" (1/1) ... [2020-10-27 01:13:08,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:08" (1/1) ... [2020-10-27 01:13:08,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:13:08,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:13:08,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:13:08,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:13:08,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:13:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:13:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:13:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:13:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-27 01:13:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure open [2020-10-27 01:13:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:13:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure l_read [2020-10-27 01:13:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure l_open [2020-10-27 01:13:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:13:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:13:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:13:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:13:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:13:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:13:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:13:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:13:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:13:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:13:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:13:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:13:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:13:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:13:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:13:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:13:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:13:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:13:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:13:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:13:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:13:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:13:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:13:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:13:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:13:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:13:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:13:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:13:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:13:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:13:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:13:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:13:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:13:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:13:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:13:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:13:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:13:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:13:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:13:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:13:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:13:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:13:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:13:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:13:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:13:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:13:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:13:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:13:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:13:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:13:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:13:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:13:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:13:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:13:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:13:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:13:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:13:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:13:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:13:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:13:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:13:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:13:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:13:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:13:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:13:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:13:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:13:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2020-10-27 01:13:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:13:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:13:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:13:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:13:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:13:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:13:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:13:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:13:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:13:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:13:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:13:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:13:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:13:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:13:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:13:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:13:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:13:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:13:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:13:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:13:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:13:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:13:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:13:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:13:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:13:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:13:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:13:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:13:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:13:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:13:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:13:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:13:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:13:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:13:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure posix_openpt [2020-10-27 01:13:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:13:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-27 01:13:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2020-10-27 01:13:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure fstat [2020-10-27 01:13:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure fstatat [2020-10-27 01:13:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2020-10-27 01:13:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure chmod [2020-10-27 01:13:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure lchmod [2020-10-27 01:13:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure fchmod [2020-10-27 01:13:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure fchmodat [2020-10-27 01:13:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure umask [2020-10-27 01:13:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure mkdir [2020-10-27 01:13:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure mkdirat [2020-10-27 01:13:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure mknod [2020-10-27 01:13:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure mknodat [2020-10-27 01:13:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure mkfifo [2020-10-27 01:13:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure mkfifoat [2020-10-27 01:13:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure utimensat [2020-10-27 01:13:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure futimens [2020-10-27 01:13:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure __fxstat [2020-10-27 01:13:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure __xstat [2020-10-27 01:13:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure __lxstat [2020-10-27 01:13:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure __fxstatat [2020-10-27 01:13:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure __xmknod [2020-10-27 01:13:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure __xmknodat [2020-10-27 01:13:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure fcntl [2020-10-27 01:13:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure open [2020-10-27 01:13:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure openat [2020-10-27 01:13:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure openat64 [2020-10-27 01:13:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure creat [2020-10-27 01:13:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure lockf [2020-10-27 01:13:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure posix_fadvise [2020-10-27 01:13:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure posix_fallocate [2020-10-27 01:13:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 01:13:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:13:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure l_read [2020-10-27 01:13:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure l_open [2020-10-27 01:13:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:13:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:13:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:13:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:13:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:13:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:13:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:13:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:13:09,320 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:13:09,321 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 01:13:09,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:13:09 BoogieIcfgContainer [2020-10-27 01:13:09,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:13:09,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:13:09,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:13:09,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:13:09,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:13:07" (1/3) ... [2020-10-27 01:13:09,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c4868f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:13:09, skipping insertion in model container [2020-10-27 01:13:09,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:13:08" (2/3) ... [2020-10-27 01:13:09,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c4868f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:13:09, skipping insertion in model container [2020-10-27 01:13:09,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:13:09" (3/3) ... [2020-10-27 01:13:09,344 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2020-10-27 01:13:09,357 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:13:09,362 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:13:09,376 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:13:09,403 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:13:09,403 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:13:09,403 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:13:09,404 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:13:09,404 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:13:09,404 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:13:09,404 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:13:09,404 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:13:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-27 01:13:09,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:13:09,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:09,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:13:09,425 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:09,431 INFO L82 PathProgramCache]: Analyzing trace with hash -214875169, now seen corresponding path program 1 times [2020-10-27 01:13:09,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:09,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094627265] [2020-10-27 01:13:09,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:09,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:09,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 01:13:09,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:09,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-27 01:13:09,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:13:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:13:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:13:10,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:10,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:10,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:10,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:10,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:10,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:13:10,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:10,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:10,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:10,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:10,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:10,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:13:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:10,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:10,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:13:10,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 01:13:10,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:13:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 01:13:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:13:10,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094627265] [2020-10-27 01:13:10,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:13:10,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:13:10,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616479156] [2020-10-27 01:13:10,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:13:10,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:10,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:13:10,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:13:10,102 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-10-27 01:13:10,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:10,290 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-10-27 01:13:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:13:10,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-27 01:13:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:10,316 INFO L225 Difference]: With dead ends: 55 [2020-10-27 01:13:10,317 INFO L226 Difference]: Without dead ends: 20 [2020-10-27 01:13:10,320 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 [2020-10-27 01:13:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-27 01:13:10,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-27 01:13:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-27 01:13:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-10-27 01:13:10,365 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 19 [2020-10-27 01:13:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:10,365 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-10-27 01:13:10,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:13:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-10-27 01:13:10,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:13:10,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:10,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:13:10,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:13:10,367 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:10,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:10,368 INFO L82 PathProgramCache]: Analyzing trace with hash 486189409, now seen corresponding path program 1 times [2020-10-27 01:13:10,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:10,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181179316] [2020-10-27 01:13:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:13:10,397 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:13:10,397 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:13:10,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:13:10,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:13:10 BoogieIcfgContainer [2020-10-27 01:13:10,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:13:10,423 INFO L168 Benchmark]: Toolchain (without parser) took 2531.93 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 122.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:13:10,424 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 100.3 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:13:10,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.73 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 131.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:13:10,426 INFO L168 Benchmark]: Boogie Preprocessor took 58.21 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 129.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:13:10,427 INFO L168 Benchmark]: RCFGBuilder took 679.24 ms. Allocated memory is still 151.0 MB. Free memory was 129.5 MB in the beginning and 87.0 MB in the end (delta: 42.5 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:13:10,428 INFO L168 Benchmark]: TraceAbstraction took 1083.33 ms. Allocated memory is still 151.0 MB. Free memory was 132.2 MB in the beginning and 122.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:13:10,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 100.3 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 682.73 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 131.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.21 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 129.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 679.24 ms. Allocated memory is still 151.0 MB. Free memory was 129.5 MB in the beginning and 87.0 MB in the end (delta: 42.5 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1083.33 ms. Allocated memory is still 151.0 MB. Free memory was 132.2 MB in the beginning and 122.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.8 MB. 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: 1.0s, 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, 0.4s 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...