/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/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:44:28,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:44:28,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:44:28,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:44:28,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:44:28,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:44:28,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:44:28,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:44:28,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:44:28,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:44:28,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:44:28,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:44:28,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:44:28,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:44:28,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:44:28,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:44:28,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:44:28,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:44:28,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:44:28,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:44:28,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:44:28,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:44:28,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:44:28,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:44:28,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:44:28,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:44:28,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:44:28,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:44:28,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:44:28,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:44:28,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:44:28,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:44:28,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:44:28,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:44:28,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:44:28,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:44:28,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:44:28,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:44:28,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:44:28,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:44:28,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:44:28,736 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 14:44:28,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:44:28,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:44:28,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:44:28,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:44:28,764 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:44:28,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:44:28,765 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:44:28,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:44:28,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:44:28,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:44:28,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:44:28,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:44:28,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:44:28,767 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:44:28,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:44:28,767 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:44:28,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:44:28,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:44:28,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:44:28,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:44:28,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:44:28,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:44:28,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:44:28,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:44:28,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:44:28,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:44:28,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:44:28,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:44:28,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:44:28,771 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:44:29,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:44:29,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:44:29,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:44:29,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:44:29,217 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:44:29,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-10-28 14:44:29,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/975752cdf/3f12d520b4d54ff98f565fef5e2cacd5/FLAGeb8cd0064 [2020-10-28 14:44:30,088 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:44:30,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/splice-1.i [2020-10-28 14:44:30,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/975752cdf/3f12d520b4d54ff98f565fef5e2cacd5/FLAGeb8cd0064 [2020-10-28 14:44:30,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/975752cdf/3f12d520b4d54ff98f565fef5e2cacd5 [2020-10-28 14:44:30,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:44:30,381 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:44:30,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:44:30,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:44:30,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:44:30,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:44:30" (1/1) ... [2020-10-28 14:44:30,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c86b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:30, skipping insertion in model container [2020-10-28 14:44:30,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:44:30" (1/1) ... [2020-10-28 14:44:30,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:44:30,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:44:30,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:44:30,747 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:44:30,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:44:30,944 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:44:30,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:30 WrapperNode [2020-10-28 14:44:30,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:44:30,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:44:30,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:44:30,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:44:30,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:30" (1/1) ... [2020-10-28 14:44:30,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:30" (1/1) ... [2020-10-28 14:44:31,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:30" (1/1) ... [2020-10-28 14:44:31,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:30" (1/1) ... [2020-10-28 14:44:31,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:30" (1/1) ... [2020-10-28 14:44:31,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:30" (1/1) ... [2020-10-28 14:44:31,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:30" (1/1) ... [2020-10-28 14:44:31,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:44:31,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:44:31,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:44:31,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:44:31,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:30" (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 14:44:31,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:44:31,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:44:31,232 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:44:31,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:44:31,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:44:31,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-28 14:44:31,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-28 14:44:31,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-28 14:44:31,234 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-28 14:44:31,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:44:31,235 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:44:31,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:44:31,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:44:31,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:44:31,236 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:44:31,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:44:31,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:44:31,237 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:44:31,237 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:44:31,237 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:44:31,238 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:44:31,238 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:44:31,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:44:31,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:44:31,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:44:31,238 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:44:31,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:44:31,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:44:31,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:44:31,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:44:31,239 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:44:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:44:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:44:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:44:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:44:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-28 14:44:31,240 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-28 14:44:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-28 14:44:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:44:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:44:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:44:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:44:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:44:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:44:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:44:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:44:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:44:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:44:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:44:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:44:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:44:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:44:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:44:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:44:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:44:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:44:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:44:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:44:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:44:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:44:31,247 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:44:31,247 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:44:31,247 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:44:31,247 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:44:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:44:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:44:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:44:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:44:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:44:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:44:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:44:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:44:31,251 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:44:31,252 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:44:31,252 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:44:31,252 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:44:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:44:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:44:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:44:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:44:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:44:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:44:31,254 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:44:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:44:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:44:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:44:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:44:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:44:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:44:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:44:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:44:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:44:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:44:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:44:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:44:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:44:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:44:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:44:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:44:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:44:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:44:31,258 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:44:31,258 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:44:31,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:44:31,258 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:44:31,258 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:44:31,258 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:44:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:44:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:44:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:44:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:44:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:44:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:44:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:44:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:44:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:44:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:44:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:44:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:44:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:44:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:44:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:44:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:44:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-28 14:44:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:44:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:44:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:44:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:44:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:44:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:44:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:44:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:44:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:44:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:44:31,844 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-28 14:44:32,025 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:44:32,025 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-28 14:44:32,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:44:32 BoogieIcfgContainer [2020-10-28 14:44:32,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:44:32,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:44:32,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:44:32,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:44:32,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:44:30" (1/3) ... [2020-10-28 14:44:32,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7827a377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:44:32, skipping insertion in model container [2020-10-28 14:44:32,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:30" (2/3) ... [2020-10-28 14:44:32,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7827a377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:44:32, skipping insertion in model container [2020-10-28 14:44:32,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:44:32" (3/3) ... [2020-10-28 14:44:32,040 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-10-28 14:44:32,057 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:44:32,062 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:44:32,092 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:44:32,138 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:44:32,139 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:44:32,139 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:44:32,139 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:44:32,139 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:44:32,139 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:44:32,139 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:44:32,140 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:44:32,169 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-28 14:44:32,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 14:44:32,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:32,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:32,186 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:32,196 INFO L82 PathProgramCache]: Analyzing trace with hash 455186036, now seen corresponding path program 1 times [2020-10-28 14:44:32,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:32,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605199813] [2020-10-28 14:44:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:32,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:32,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:32,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:32,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:33,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:33,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 14:44:33,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:44:33,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-28 14:44:33,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:33,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 14:44:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:33,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:44:33,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:33,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:33,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:33,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:33,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:33,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:44:33,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:33,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:33,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:33,430 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 14:44:33,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605199813] [2020-10-28 14:44:33,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:33,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:44:33,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502262491] [2020-10-28 14:44:33,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 14:44:33,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:33,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 14:44:33,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:44:33,463 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-28 14:44:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:33,683 INFO L93 Difference]: Finished difference Result 61 states and 87 transitions. [2020-10-28 14:44:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:44:33,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-28 14:44:33,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:33,693 INFO L225 Difference]: With dead ends: 61 [2020-10-28 14:44:33,693 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 14:44:33,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:44:33,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 14:44:33,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-28 14:44:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 14:44:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-10-28 14:44:33,739 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2020-10-28 14:44:33,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:33,739 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-10-28 14:44:33,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 14:44:33,740 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-10-28 14:44:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 14:44:33,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:33,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:33,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:44:33,741 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:33,742 INFO L82 PathProgramCache]: Analyzing trace with hash 929438058, now seen corresponding path program 1 times [2020-10-28 14:44:33,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:33,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890349060] [2020-10-28 14:44:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:33,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:33,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:34,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 14:44:34,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:44:34,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-28 14:44:34,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:34,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:34,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:44:34,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 14:44:34,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:44:34,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:34,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:34,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:34,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:34,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:44:34,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:34,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:34,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:34,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:34,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:34,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:34,336 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 14:44:34,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890349060] [2020-10-28 14:44:34,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:34,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:44:34,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42005904] [2020-10-28 14:44:34,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:44:34,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:34,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:44:34,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:44:34,340 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 5 states. [2020-10-28 14:44:34,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:34,483 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2020-10-28 14:44:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:44:34,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-28 14:44:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:34,485 INFO L225 Difference]: With dead ends: 53 [2020-10-28 14:44:34,486 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 14:44:34,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:44:34,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 14:44:34,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-10-28 14:44:34,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 14:44:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-28 14:44:34,495 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 20 [2020-10-28 14:44:34,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:34,495 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-28 14:44:34,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:44:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-28 14:44:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 14:44:34,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:34,497 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:34,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:44:34,497 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:34,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:34,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1744908651, now seen corresponding path program 1 times [2020-10-28 14:44:34,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:34,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252444889] [2020-10-28 14:44:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:34,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:34,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 14:44:34,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 14:44:34,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:34,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:44:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 14:44:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:44:34,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:34,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:34,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:34,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:34,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:34,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:44:34,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:34,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:34,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:34,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:34,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:34,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:44:34,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252444889] [2020-10-28 14:44:34,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:34,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:44:34,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543673074] [2020-10-28 14:44:34,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:44:34,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:34,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:44:34,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:44:34,817 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 5 states. [2020-10-28 14:44:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:34,950 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-10-28 14:44:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:44:34,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-28 14:44:34,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:34,954 INFO L225 Difference]: With dead ends: 49 [2020-10-28 14:44:34,954 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 14:44:34,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:44:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 14:44:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-10-28 14:44:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 14:44:34,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-10-28 14:44:34,964 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2020-10-28 14:44:34,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:34,965 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-10-28 14:44:34,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:44:34,965 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-10-28 14:44:34,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:44:34,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:34,966 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:34,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:44:34,967 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:34,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:34,967 INFO L82 PathProgramCache]: Analyzing trace with hash 852973482, now seen corresponding path program 1 times [2020-10-28 14:44:34,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:34,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596282894] [2020-10-28 14:44:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:35,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:35,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:35,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:44:35,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:35,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-28 14:44:35,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:35,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:44:35,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 14:44:35,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 14:44:35,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:35,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:35,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:35,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:35,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:44:35,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:35,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:44:35,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596282894] [2020-10-28 14:44:35,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:35,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:44:35,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146854852] [2020-10-28 14:44:35,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:44:35,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:35,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:44:35,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:44:35,314 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 5 states. [2020-10-28 14:44:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:35,462 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2020-10-28 14:44:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:44:35,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-28 14:44:35,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:35,468 INFO L225 Difference]: With dead ends: 56 [2020-10-28 14:44:35,468 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 14:44:35,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:44:35,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 14:44:35,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 14:44:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 14:44:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2020-10-28 14:44:35,485 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 28 [2020-10-28 14:44:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:35,486 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2020-10-28 14:44:35,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:44:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2020-10-28 14:44:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 14:44:35,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:35,488 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:35,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:44:35,489 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:35,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:35,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1289219814, now seen corresponding path program 1 times [2020-10-28 14:44:35,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:35,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213844114] [2020-10-28 14:44:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:44:35,520 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:44:35,521 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:44:35,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:44:35,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:44:35 BoogieIcfgContainer [2020-10-28 14:44:35,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:44:35,546 INFO L168 Benchmark]: Toolchain (without parser) took 5170.48 ms. Allocated memory was 125.8 MB in the beginning and 201.3 MB in the end (delta: 75.5 MB). Free memory was 100.3 MB in the beginning and 96.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 80.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:35,547 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 125.8 MB. Free memory was 99.4 MB in the beginning and 99.3 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:44:35,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 563.46 ms. Allocated memory is still 125.8 MB. Free memory was 99.6 MB in the beginning and 77.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:35,549 INFO L168 Benchmark]: Boogie Preprocessor took 187.37 ms. Allocated memory was 125.8 MB in the beginning and 167.8 MB in the end (delta: 41.9 MB). Free memory was 77.0 MB in the beginning and 150.6 MB in the end (delta: -73.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:35,550 INFO L168 Benchmark]: RCFGBuilder took 892.15 ms. Allocated memory is still 167.8 MB. Free memory was 150.6 MB in the beginning and 106.7 MB in the end (delta: 43.9 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:35,550 INFO L168 Benchmark]: TraceAbstraction took 3513.63 ms. Allocated memory was 167.8 MB in the beginning and 201.3 MB in the end (delta: 33.6 MB). Free memory was 106.1 MB in the beginning and 96.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:35,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 125.8 MB. Free memory was 99.4 MB in the beginning and 99.3 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 563.46 ms. Allocated memory is still 125.8 MB. Free memory was 99.6 MB in the beginning and 77.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 187.37 ms. Allocated memory was 125.8 MB in the beginning and 167.8 MB in the end (delta: 41.9 MB). Free memory was 77.0 MB in the beginning and 150.6 MB in the end (delta: -73.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 892.15 ms. Allocated memory is still 167.8 MB. Free memory was 150.6 MB in the beginning and 106.7 MB in the end (delta: 43.9 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3513.63 ms. Allocated memory was 167.8 MB in the beginning and 201.3 MB in the end (delta: 33.6 MB). Free memory was 106.1 MB in the beginning and 96.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND TRUE __VERIFIER_nondet_int() [L542] COND TRUE \read(flag) [L543] p->h = 1 [L544] flag = 0 [L549] t = (List) malloc(sizeof(struct node)) [L550] COND FALSE !(t == 0) [L551] p->n = t [L552] EXPR p->n [L552] p = p->n [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND FALSE !(a->h == 3) [L556] flag = 1 [L557] l1 = 0 [L558] l2 = 0 [L559] p = a [L560] EXPR p->h [L560] COND TRUE p->h != 3 [L561] t = p [L562] EXPR p->n [L562] p = p->n [L563] COND TRUE \read(flag) [L564] t->n = l1 [L565] l1 = t [L566] flag = 0 [L560] EXPR p->h [L560] COND FALSE !(p->h != 3) [L573] p = l1 [L574] COND TRUE p != 0 [L575] EXPR p->h [L575] COND TRUE p->h != 2 [L584] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "splice-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 32 SDslu, 133 SDs, 0 SdLazy, 218 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 6068 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...