/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=DEEPEST --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/heap-data/shared_mem2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:51:03,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:51:03,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:51:03,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:51:03,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:51:03,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:51:03,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:51:03,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:51:03,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:51:03,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:51:03,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:51:03,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:51:03,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:51:03,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:51:03,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:51:03,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:51:03,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:51:03,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:51:03,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:51:03,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:51:03,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:51:03,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:51:03,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:51:03,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:51:03,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:51:03,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:51:03,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:51:03,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:51:03,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:51:03,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:51:03,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:51:03,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:51:03,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:51:03,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:51:03,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:51:03,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:51:03,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:51:03,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:51:03,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:51:03,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:51:03,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:51:03,820 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 19:51:03,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:51:03,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:51:03,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:51:03,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:51:03,863 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:51:03,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:51:03,864 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:51:03,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:51:03,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:51:03,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:51:03,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:51:03,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:51:03,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:51:03,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:51:03,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:51:03,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:51:03,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:51:03,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:51:03,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:51:03,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:51:03,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:51:03,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:51:03,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:51:03,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:51:03,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:51:03,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:51:03,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:51:03,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:51:03,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:51:03,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:51:04,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:51:04,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:51:04,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:51:04,277 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:51:04,278 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:51:04,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/shared_mem2.i [2020-10-27 19:51:04,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a28652ea3/13bb8549cd8444b0b00860535893a68d/FLAG60f5fc479 [2020-10-27 19:51:05,101 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:51:05,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/shared_mem2.i [2020-10-27 19:51:05,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a28652ea3/13bb8549cd8444b0b00860535893a68d/FLAG60f5fc479 [2020-10-27 19:51:05,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a28652ea3/13bb8549cd8444b0b00860535893a68d [2020-10-27 19:51:05,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:51:05,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:51:05,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:51:05,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:51:05,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:51:05,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:51:05" (1/1) ... [2020-10-27 19:51:05,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@179d7614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:05, skipping insertion in model container [2020-10-27 19:51:05,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:51:05" (1/1) ... [2020-10-27 19:51:05,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:51:05,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:51:05,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:51:05,795 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:51:05,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:51:05,914 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:51:05,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:05 WrapperNode [2020-10-27 19:51:05,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:51:05,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:51:05,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:51:05,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:51:05,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:05" (1/1) ... [2020-10-27 19:51:05,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:05" (1/1) ... [2020-10-27 19:51:05,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:05" (1/1) ... [2020-10-27 19:51:05,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:05" (1/1) ... [2020-10-27 19:51:05,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:05" (1/1) ... [2020-10-27 19:51:05,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:05" (1/1) ... [2020-10-27 19:51:05,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:05" (1/1) ... [2020-10-27 19:51:05,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:51:05,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:51:05,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:51:05,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:51:05,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:05" (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 19:51:06,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:51:06,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:51:06,081 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:51:06,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 19:51:06,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 19:51:06,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:51:06,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:51:06,082 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:51:06,082 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:51:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 19:51:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 19:51:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:51:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:51:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 19:51:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 19:51:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 19:51:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 19:51:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 19:51:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 19:51:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 19:51:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 19:51:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 19:51:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 19:51:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 19:51:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 19:51:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 19:51:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 19:51:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 19:51:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 19:51:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 19:51:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 19:51:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 19:51:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 19:51:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 19:51:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 19:51:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 19:51:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 19:51:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 19:51:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 19:51:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 19:51:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 19:51:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 19:51:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 19:51:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 19:51:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 19:51:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 19:51:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 19:51:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 19:51:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 19:51:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 19:51:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 19:51:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 19:51:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 19:51:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 19:51:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 19:51:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 19:51:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 19:51:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 19:51:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 19:51:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 19:51:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 19:51:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 19:51:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 19:51:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 19:51:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 19:51:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 19:51:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 19:51:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 19:51:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 19:51:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 19:51:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 19:51:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 19:51:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 19:51:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 19:51:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 19:51:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 19:51:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 19:51:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:51:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 19:51:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 19:51:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 19:51:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 19:51:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 19:51:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 19:51:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 19:51:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 19:51:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 19:51:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 19:51:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 19:51:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 19:51:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 19:51:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 19:51:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 19:51:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 19:51:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 19:51:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 19:51:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 19:51:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 19:51:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 19:51:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 19:51:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 19:51:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 19:51:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 19:51:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 19:51:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 19:51:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 19:51:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 19:51:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 19:51:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 19:51:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 19:51:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 19:51:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 19:51:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 19:51:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 19:51:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 19:51:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 19:51:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 19:51:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:51:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 19:51:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:51:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 19:51:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:51:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 19:51:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:51:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:51:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:51:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:51:06,778 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:51:06,779 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 19:51:06,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:51:06 BoogieIcfgContainer [2020-10-27 19:51:06,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:51:06,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:51:06,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:51:06,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:51:06,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:51:05" (1/3) ... [2020-10-27 19:51:06,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd899c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:51:06, skipping insertion in model container [2020-10-27 19:51:06,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:05" (2/3) ... [2020-10-27 19:51:06,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd899c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:51:06, skipping insertion in model container [2020-10-27 19:51:06,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:51:06" (3/3) ... [2020-10-27 19:51:06,790 INFO L111 eAbstractionObserver]: Analyzing ICFG shared_mem2.i [2020-10-27 19:51:06,802 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:51:06,807 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:51:06,821 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:51:06,848 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:51:06,849 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:51:06,849 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:51:06,849 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:51:06,849 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:51:06,849 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:51:06,849 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:51:06,850 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:51:06,867 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-27 19:51:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 19:51:06,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:06,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:51:06,874 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:06,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:06,881 INFO L82 PathProgramCache]: Analyzing trace with hash 29789142, now seen corresponding path program 1 times [2020-10-27 19:51:06,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:06,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466016465] [2020-10-27 19:51:06,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:07,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:07,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:07,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:07,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 19:51:07,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:51:07,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-27 19:51:07,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 19:51:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:07,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 19:51:07,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:07,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:07,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:07,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:07,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:07,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:51:07,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:07,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:51:07,433 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 19:51:07,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466016465] [2020-10-27 19:51:07,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:07,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 19:51:07,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460117329] [2020-10-27 19:51:07,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 19:51:07,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:07,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 19:51:07,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 19:51:07,462 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-27 19:51:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:07,559 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2020-10-27 19:51:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:51:07,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-27 19:51:07,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:07,569 INFO L225 Difference]: With dead ends: 41 [2020-10-27 19:51:07,570 INFO L226 Difference]: Without dead ends: 20 [2020-10-27 19:51:07,573 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 [2020-10-27 19:51:07,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-27 19:51:07,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-27 19:51:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-27 19:51:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-27 19:51:07,616 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2020-10-27 19:51:07,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:07,617 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-27 19:51:07,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 19:51:07,617 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-27 19:51:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 19:51:07,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:07,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:51:07,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:51:07,619 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:07,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:07,620 INFO L82 PathProgramCache]: Analyzing trace with hash 793715911, now seen corresponding path program 1 times [2020-10-27 19:51:07,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:07,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148663517] [2020-10-27 19:51:07,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:07,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:07,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:07,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 19:51:07,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:07,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-27 19:51:07,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:51:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:51:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:51:07,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:07,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:07,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:07,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:07,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:07,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:07,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:51:07,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:07,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:07,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:07,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:07,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:07,988 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 19:51:07,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148663517] [2020-10-27 19:51:07,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:07,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:51:07,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014212637] [2020-10-27 19:51:07,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:51:07,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:07,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:51:07,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:51:07,993 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-10-27 19:51:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:08,099 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-10-27 19:51:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:51:08,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-27 19:51:08,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:08,101 INFO L225 Difference]: With dead ends: 34 [2020-10-27 19:51:08,101 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 19:51:08,102 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 [2020-10-27 19:51:08,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 19:51:08,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 19:51:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 19:51:08,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-27 19:51:08,110 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-10-27 19:51:08,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:08,110 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-27 19:51:08,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:51:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-27 19:51:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 19:51:08,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:08,111 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:51:08,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:51:08,112 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:08,113 INFO L82 PathProgramCache]: Analyzing trace with hash 525141040, now seen corresponding path program 1 times [2020-10-27 19:51:08,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:08,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584614050] [2020-10-27 19:51:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:08,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:08,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 19:51:08,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-27 19:51:08,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:51:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:51:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 19:51:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:08,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:08,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:08,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:08,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:08,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:51:08,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:08,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:08,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:08,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:08,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:08,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584614050] [2020-10-27 19:51:08,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:51:08,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:51:08,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987041902] [2020-10-27 19:51:08,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:51:08,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:08,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:51:08,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:51:08,636 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 6 states. [2020-10-27 19:51:08,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:08,900 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2020-10-27 19:51:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 19:51:08,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-27 19:51:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:08,904 INFO L225 Difference]: With dead ends: 42 [2020-10-27 19:51:08,904 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 19:51:08,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:51:08,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 19:51:08,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-10-27 19:51:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 19:51:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2020-10-27 19:51:08,913 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 19 [2020-10-27 19:51:08,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:08,913 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2020-10-27 19:51:08,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:51:08,913 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2020-10-27 19:51:08,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 19:51:08,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:08,914 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:51:08,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:51:08,915 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:08,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:08,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1951293278, now seen corresponding path program 1 times [2020-10-27 19:51:08,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:08,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220674345] [2020-10-27 19:51:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:08,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:09,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:09,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:09,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:09,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 19:51:09,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:51:09,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-10-27 19:51:09,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:51:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 19:51:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:51:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 19:51:09,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:09,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:09,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:09,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:09,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:51:09,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:09,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:51:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:09,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220674345] [2020-10-27 19:51:09,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:10,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 19:51:10,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248585967] [2020-10-27 19:51:10,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 19:51:10,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:10,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 19:51:10,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:51:10,002 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 9 states. [2020-10-27 19:51:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:10,240 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2020-10-27 19:51:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:51:10,241 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-27 19:51:10,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:10,242 INFO L225 Difference]: With dead ends: 42 [2020-10-27 19:51:10,242 INFO L226 Difference]: Without dead ends: 24 [2020-10-27 19:51:10,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:51:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-27 19:51:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-27 19:51:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-27 19:51:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-27 19:51:10,255 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 20 [2020-10-27 19:51:10,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:10,257 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-27 19:51:10,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 19:51:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-27 19:51:10,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 19:51:10,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:10,258 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:51:10,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:51:10,259 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash 935231527, now seen corresponding path program 2 times [2020-10-27 19:51:10,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:10,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967600370] [2020-10-27 19:51:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:10,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:10,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 19:51:10,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:10,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-27 19:51:10,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:51:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:51:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 19:51:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:10,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:10,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:10,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:10,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:10,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:10,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:51:10,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:51:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:10,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967600370] [2020-10-27 19:51:10,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:51:10,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:51:10,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623806518] [2020-10-27 19:51:10,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:51:10,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:10,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:51:10,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:51:10,752 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 7 states. [2020-10-27 19:51:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:10,837 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-10-27 19:51:10,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 19:51:10,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-27 19:51:10,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:10,838 INFO L225 Difference]: With dead ends: 24 [2020-10-27 19:51:10,839 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 19:51:10,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:51:10,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 19:51:10,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 19:51:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 19:51:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 19:51:10,841 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-27 19:51:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:10,841 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 19:51:10,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:51:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 19:51:10,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 19:51:10,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:51:10,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 19:51:10,988 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 13) no Hoare annotation was computed. [2020-10-27 19:51:10,988 INFO L274 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-10-27 19:51:10,988 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 13) the Hoare annotation is: true [2020-10-27 19:51:10,989 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-10-27 19:51:10,989 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-10-27 19:51:10,989 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 19:51:10,989 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-27 19:51:10,989 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 19:51:10,989 INFO L274 CegarLoopResult]: For program point __bswap_32ENTRY(lines 75 79) no Hoare annotation was computed. [2020-10-27 19:51:10,989 INFO L274 CegarLoopResult]: For program point __bswap_32FINAL(lines 75 79) no Hoare annotation was computed. [2020-10-27 19:51:10,990 INFO L274 CegarLoopResult]: For program point __bswap_32EXIT(lines 75 79) no Hoare annotation was computed. [2020-10-27 19:51:10,990 INFO L274 CegarLoopResult]: For program point __bswap_64ENTRY(lines 80 84) no Hoare annotation was computed. [2020-10-27 19:51:10,990 INFO L274 CegarLoopResult]: For program point __bswap_64FINAL(lines 80 84) no Hoare annotation was computed. [2020-10-27 19:51:10,990 INFO L274 CegarLoopResult]: For program point __bswap_64EXIT(lines 80 84) no Hoare annotation was computed. [2020-10-27 19:51:10,990 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 19:51:10,990 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 19:51:10,990 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 19:51:10,990 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 19:51:10,990 INFO L270 CegarLoopResult]: At program point L601(line 601) the Hoare annotation is: false [2020-10-27 19:51:10,990 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 576 602) no Hoare annotation was computed. [2020-10-27 19:51:10,991 INFO L274 CegarLoopResult]: For program point L595-1(lines 595 599) no Hoare annotation was computed. [2020-10-27 19:51:10,991 INFO L270 CegarLoopResult]: At program point L595-3(lines 595 599) the Hoare annotation is: (<= (select (select |#memory_int| main_~m~0.base) main_~m~0.offset) 100) [2020-10-27 19:51:10,991 INFO L274 CegarLoopResult]: For program point L595-4(lines 595 599) no Hoare annotation was computed. [2020-10-27 19:51:10,991 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 576 602) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-27 19:51:10,991 INFO L274 CegarLoopResult]: For program point L600(lines 600 601) no Hoare annotation was computed. [2020-10-27 19:51:10,991 INFO L274 CegarLoopResult]: For program point L600-1(lines 576 602) no Hoare annotation was computed. [2020-10-27 19:51:10,991 INFO L274 CegarLoopResult]: For program point L596(lines 596 597) no Hoare annotation was computed. [2020-10-27 19:51:10,991 INFO L274 CegarLoopResult]: For program point L596-2(lines 596 597) no Hoare annotation was computed. [2020-10-27 19:51:10,991 INFO L274 CegarLoopResult]: For program point L586(lines 586 592) no Hoare annotation was computed. [2020-10-27 19:51:10,993 INFO L270 CegarLoopResult]: At program point L586-2(lines 584 593) the Hoare annotation is: (and (not (= main_~m~0.base main_~list~0.base)) (= (select |#valid| main_~m~0.base) 1) (= (select (select |#memory_int| main_~m~0.base) main_~m~0.offset) 0)) [2020-10-27 19:51:10,993 INFO L274 CegarLoopResult]: For program point L584-1(lines 584 593) no Hoare annotation was computed. [2020-10-27 19:51:10,993 INFO L274 CegarLoopResult]: For program point L584-3(lines 584 593) no Hoare annotation was computed. [2020-10-27 19:51:11,004 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:51:11,010 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:51:11,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:51:11,011 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:51:11,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:51:11 BoogieIcfgContainer [2020-10-27 19:51:11,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:51:11,019 INFO L168 Benchmark]: Toolchain (without parser) took 5675.96 ms. Allocated memory was 157.3 MB in the beginning and 190.8 MB in the end (delta: 33.6 MB). Free memory was 132.0 MB in the beginning and 88.4 MB in the end (delta: 43.6 MB). Peak memory consumption was 78.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:51:11,020 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 157.3 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:51:11,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.41 ms. Allocated memory is still 157.3 MB. Free memory was 131.3 MB in the beginning and 109.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:51:11,024 INFO L168 Benchmark]: Boogie Preprocessor took 70.02 ms. Allocated memory is still 157.3 MB. Free memory was 109.6 MB in the beginning and 106.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:51:11,030 INFO L168 Benchmark]: RCFGBuilder took 793.63 ms. Allocated memory is still 157.3 MB. Free memory was 106.9 MB in the beginning and 112.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:51:11,031 INFO L168 Benchmark]: TraceAbstraction took 4231.12 ms. Allocated memory was 157.3 MB in the beginning and 190.8 MB in the end (delta: 33.6 MB). Free memory was 112.4 MB in the beginning and 88.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:51:11,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 157.3 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 567.41 ms. Allocated memory is still 157.3 MB. Free memory was 131.3 MB in the beginning and 109.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.02 ms. Allocated memory is still 157.3 MB. Free memory was 109.6 MB in the beginning and 106.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 793.63 ms. Allocated memory is still 157.3 MB. Free memory was 106.9 MB in the beginning and 112.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4231.12 ms. Allocated memory was 157.3 MB in the beginning and 190.8 MB in the end (delta: 33.6 MB). Free memory was 112.4 MB in the beginning and 88.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 595]: Loop Invariant [2020-10-27 19:51:11,051 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:51:11,056 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: unknown-#memory_int-unknown[m][m] <= 100 - InvariantResult [Line: 584]: Loop Invariant [2020-10-27 19:51:11,057 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 19:51:11,057 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (!(m == list) && \valid[m] == 1) && unknown-#memory_int-unknown[m][m] == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 34 SDslu, 143 SDs, 0 SdLazy, 200 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, 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, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 18 NumberOfFragments, 60 HoareAnnotationTreeSize, 12 FomulaSimplifications, 98 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 10103 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/11 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 correct! Received shutdown request...