./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0220.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0220.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebc5ac28f2460014630964c3ebebf9e4c3b4bcee ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0220.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebc5ac28f2460014630964c3ebebf9e4c3b4bcee ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:04:34,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:04:34,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:04:34,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:04:34,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:04:34,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:04:34,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:04:34,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:04:34,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:04:34,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:04:34,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:04:34,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:04:34,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:04:34,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:04:34,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:04:34,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:04:34,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:04:34,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:04:34,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:04:34,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:04:34,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:04:34,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:04:34,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:04:34,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:04:34,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:04:34,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:04:34,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:04:34,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:04:34,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:04:34,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:04:34,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:04:34,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:04:34,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:04:34,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:04:34,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:04:34,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:04:34,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:04:34,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:04:34,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:04:34,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:04:34,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:04:34,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:04:34,172 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:04:34,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:04:34,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:04:34,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:04:34,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:04:34,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:04:34,176 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:04:34,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:04:34,176 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:04:34,177 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:04:34,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:04:34,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:04:34,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:04:34,178 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:04:34,178 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:04:34,178 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:04:34,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:04:34,188 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:04:34,188 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:04:34,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:04:34,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:04:34,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:04:34,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:04:34,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:04:34,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:04:34,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:04:34,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:04:34,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:04:34,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:04:34,190 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebc5ac28f2460014630964c3ebebf9e4c3b4bcee [2021-08-30 17:04:34,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:04:34,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:04:34,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:04:34,521 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:04:34,522 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:04:34,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0220.i [2021-08-30 17:04:34,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21f1dc4de/cc50e78c78b1465da5f7ab7a4a1d5278/FLAG348321f9f [2021-08-30 17:04:35,128 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:04:35,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0220.i [2021-08-30 17:04:35,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21f1dc4de/cc50e78c78b1465da5f7ab7a4a1d5278/FLAG348321f9f [2021-08-30 17:04:35,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21f1dc4de/cc50e78c78b1465da5f7ab7a4a1d5278 [2021-08-30 17:04:35,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:04:35,435 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:04:35,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:04:35,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:04:35,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:04:35,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:35" (1/1) ... [2021-08-30 17:04:35,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78213915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:35, skipping insertion in model container [2021-08-30 17:04:35,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:35" (1/1) ... [2021-08-30 17:04:35,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:04:35,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:04:35,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:04:35,793 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:04:35,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:04:35,854 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:04:35,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:35 WrapperNode [2021-08-30 17:04:35,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:04:35,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:04:35,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:04:35,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:04:35,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:35" (1/1) ... [2021-08-30 17:04:35,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:35" (1/1) ... [2021-08-30 17:04:35,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:35" (1/1) ... [2021-08-30 17:04:35,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:35" (1/1) ... [2021-08-30 17:04:35,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:35" (1/1) ... [2021-08-30 17:04:35,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:35" (1/1) ... [2021-08-30 17:04:35,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:35" (1/1) ... [2021-08-30 17:04:35,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:04:35,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:04:35,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:04:35,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:04:35,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:35" (1/1) ... [2021-08-30 17:04:35,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:04:35,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:35,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:04:35,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:04:36,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:04:36,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:04:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:04:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:04:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:04:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:04:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:04:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:04:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-30 17:04:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-30 17:04:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-30 17:04:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-30 17:04:36,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:04:36,017 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:04:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:04:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:04:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:04:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:04:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:04:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:04:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:04:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:04:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:04:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:04:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:04:36,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:04:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:04:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:04:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:04:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:04:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:04:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:04:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:04:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:04:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:04:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:04:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:04:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:04:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:04:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:04:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:04:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:04:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:04:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:04:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:04:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:04:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:04:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:04:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:04:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:04:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:04:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:04:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:04:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:04:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:04:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:04:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:04:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:04:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:04:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:04:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:04:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:04:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:04:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:04:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:04:36,024 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:04:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:04:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:04:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:04:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:04:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:04:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:04:36,025 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:04:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:04:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:04:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:04:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:04:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:04:36,026 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:04:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:04:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:04:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:04:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:04:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:04:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:04:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:04:36,027 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:04:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:04:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:04:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:04:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:04:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:04:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:04:36,028 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:04:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:04:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:04:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:04:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:04:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:04:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:04:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:04:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:04:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:04:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:04:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:04:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:04:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:04:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:04:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:04:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:04:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:04:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:04:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:04:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:04:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:04:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:04:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:04:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:04:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:04:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:04:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:04:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:04:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:04:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:04:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:04:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:04:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:04:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-30 17:04:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-30 17:04:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:04:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-30 17:04:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-30 17:04:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-30 17:04:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-30 17:04:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-30 17:04:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-30 17:04:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-30 17:04:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-30 17:04:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-30 17:04:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-30 17:04:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-30 17:04:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-30 17:04:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-30 17:04:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-30 17:04:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-30 17:04:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-30 17:04:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-30 17:04:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-30 17:04:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-30 17:04:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-30 17:04:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-30 17:04:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-30 17:04:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-30 17:04:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-30 17:04:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-30 17:04:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-30 17:04:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-30 17:04:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-30 17:04:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-30 17:04:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-30 17:04:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-30 17:04:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-30 17:04:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-30 17:04:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-30 17:04:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-30 17:04:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-30 17:04:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-30 17:04:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-30 17:04:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-30 17:04:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-30 17:04:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-30 17:04:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-30 17:04:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-30 17:04:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-30 17:04:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-30 17:04:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-30 17:04:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-30 17:04:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-30 17:04:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:04:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:04:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:04:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-30 17:04:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:04:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:04:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-30 17:04:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:04:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-30 17:04:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:04:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:04:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 17:04:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:04:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:04:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 17:04:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 17:04:36,423 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:04:36,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:04:36,532 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-30 17:04:36,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:36 BoogieIcfgContainer [2021-08-30 17:04:36,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:04:36,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:04:36,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:04:36,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:04:36,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:04:35" (1/3) ... [2021-08-30 17:04:36,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320da23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:36, skipping insertion in model container [2021-08-30 17:04:36,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:35" (2/3) ... [2021-08-30 17:04:36,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320da23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:36, skipping insertion in model container [2021-08-30 17:04:36,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:36" (3/3) ... [2021-08-30 17:04:36,543 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0220.i [2021-08-30 17:04:36,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:04:36,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-08-30 17:04:36,595 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:04:36,605 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:04:36,605 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-08-30 17:04:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 64 states have (on average 1.859375) internal successors, (119), 108 states have internal predecessors, (119), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-08-30 17:04:36,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:04:36,632 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:36,633 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:36,633 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:36,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:36,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1812237907, now seen corresponding path program 1 times [2021-08-30 17:04:36,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:36,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330267276] [2021-08-30 17:04:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:36,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:04:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:36,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:04:36,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330267276] [2021-08-30 17:04:36,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330267276] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:36,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:36,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:04:36,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351546821] [2021-08-30 17:04:36,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:04:36,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:04:36,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:04:36,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:36,895 INFO L87 Difference]: Start difference. First operand has 123 states, 64 states have (on average 1.859375) internal successors, (119), 108 states have internal predecessors, (119), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:37,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:37,127 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2021-08-30 17:04:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:04:37,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:04:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:37,143 INFO L225 Difference]: With dead ends: 124 [2021-08-30 17:04:37,143 INFO L226 Difference]: Without dead ends: 121 [2021-08-30 17:04:37,146 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:37,154 INFO L928 BasicCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198.53ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:37,155 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 22 Invalid, 220 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 198.53ms Time] [2021-08-30 17:04:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-08-30 17:04:37,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2021-08-30 17:04:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 61 states have (on average 1.8032786885245902) internal successors, (110), 106 states have internal predecessors, (110), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2021-08-30 17:04:37,205 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 7 [2021-08-30 17:04:37,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:37,205 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2021-08-30 17:04:37,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:37,206 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2021-08-30 17:04:37,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:04:37,206 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:37,206 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:37,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 17:04:37,207 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:37,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:37,208 INFO L82 PathProgramCache]: Analyzing trace with hash 723613811, now seen corresponding path program 1 times [2021-08-30 17:04:37,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:37,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213430413] [2021-08-30 17:04:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:37,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:37,228 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:04:37,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368590084] [2021-08-30 17:04:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:37,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:37,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:37,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:04:37,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 17:04:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:37,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 17:04:37,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:37,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:04:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:37,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 17:04:37,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:04:37,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213430413] [2021-08-30 17:04:37,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:04:37,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368590084] [2021-08-30 17:04:37,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368590084] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:37,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:37,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 17:04:37,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31878411] [2021-08-30 17:04:37,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:04:37,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:04:37,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:04:37,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:37,505 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:37,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:37,678 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2021-08-30 17:04:37,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:04:37,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 17:04:37,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:37,680 INFO L225 Difference]: With dead ends: 119 [2021-08-30 17:04:37,680 INFO L226 Difference]: Without dead ends: 119 [2021-08-30 17:04:37,680 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:37,681 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 159.67ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:37,682 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 217 Unknown, 0 Unchecked, 2.29ms Time], IncrementalHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 159.67ms Time] [2021-08-30 17:04:37,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-30 17:04:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-08-30 17:04:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 61 states have (on average 1.7868852459016393) internal successors, (109), 105 states have internal predecessors, (109), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2021-08-30 17:04:37,706 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 10 [2021-08-30 17:04:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:37,707 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2021-08-30 17:04:37,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:37,707 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2021-08-30 17:04:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:04:37,707 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:37,708 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:37,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:37,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:37,929 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:37,930 INFO L82 PathProgramCache]: Analyzing trace with hash 723613812, now seen corresponding path program 1 times [2021-08-30 17:04:37,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:37,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722718826] [2021-08-30 17:04:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:37,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:37,946 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:04:37,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294884979] [2021-08-30 17:04:37,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:37,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:37,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:37,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:04:37,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 17:04:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:38,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 17:04:38,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:38,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-08-30 17:04:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:38,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 17:04:38,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:04:38,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722718826] [2021-08-30 17:04:38,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:04:38,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294884979] [2021-08-30 17:04:38,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294884979] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:38,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:38,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:04:38,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463436730] [2021-08-30 17:04:38,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:04:38,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:04:38,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:04:38,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:04:38,243 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:38,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:38,488 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2021-08-30 17:04:38,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 17:04:38,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 17:04:38,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:38,490 INFO L225 Difference]: With dead ends: 118 [2021-08-30 17:04:38,490 INFO L226 Difference]: Without dead ends: 118 [2021-08-30 17:04:38,491 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.02ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:04:38,491 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 166.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.59ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 218.46ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:38,492 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 328 Unknown, 0 Unchecked, 3.59ms Time], IncrementalHoareTripleChecker [3 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 218.46ms Time] [2021-08-30 17:04:38,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-30 17:04:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-30 17:04:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 60 states have (on average 1.8) internal successors, (108), 104 states have internal predecessors, (108), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-30 17:04:38,500 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 10 [2021-08-30 17:04:38,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:38,500 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-30 17:04:38,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:38,500 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-30 17:04:38,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-30 17:04:38,501 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:38,501 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:38,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:38,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-30 17:04:38,726 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:38,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:38,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1381204090, now seen corresponding path program 1 times [2021-08-30 17:04:38,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:38,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250323133] [2021-08-30 17:04:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:38,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:38,744 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:04:38,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507554216] [2021-08-30 17:04:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:38,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:38,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:38,754 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:04:38,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 17:04:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:38,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-30 17:04:38,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:39,043 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-30 17:04:39,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-08-30 17:04:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-30 17:04:39,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 17:04:39,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:04:39,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250323133] [2021-08-30 17:04:39,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:04:39,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507554216] [2021-08-30 17:04:39,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507554216] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:39,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:39,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 17:04:39,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054517768] [2021-08-30 17:04:39,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 17:04:39,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:04:39,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 17:04:39,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:04:39,081 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 17:04:39,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:39,411 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2021-08-30 17:04:39,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:04:39,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 37 [2021-08-30 17:04:39,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:39,413 INFO L225 Difference]: With dead ends: 116 [2021-08-30 17:04:39,413 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 17:04:39,413 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.82ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:04:39,414 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 238.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.61ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 297.61ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:39,414 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 64 Invalid, 643 Unknown, 0 Unchecked, 4.61ms Time], IncrementalHoareTripleChecker [5 Valid, 622 Invalid, 0 Unknown, 16 Unchecked, 297.61ms Time] [2021-08-30 17:04:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 17:04:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-30 17:04:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 60 states have (on average 1.7666666666666666) internal successors, (106), 102 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-30 17:04:39,422 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 37 [2021-08-30 17:04:39,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:39,422 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-30 17:04:39,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-08-30 17:04:39,422 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-30 17:04:39,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-30 17:04:39,423 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:39,423 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:39,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:39,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:39,633 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:39,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1381204089, now seen corresponding path program 1 times [2021-08-30 17:04:39,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:04:39,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383037036] [2021-08-30 17:04:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:39,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:04:39,655 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-30 17:04:39,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040704565] [2021-08-30 17:04:39,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:39,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:39,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:39,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:04:39,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-30 17:04:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:39,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-30 17:04:39,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:39,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-08-30 17:04:43,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:04:43,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383037036] [2021-08-30 17:04:43,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-30 17:04:43,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040704565] [2021-08-30 17:04:43,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:04:43,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:43,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:04:43,114 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-08-30 17:04:43,114 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:04:43,117 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION (45 of 46 remaining) [2021-08-30 17:04:43,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION (44 of 46 remaining) [2021-08-30 17:04:43,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION (43 of 46 remaining) [2021-08-30 17:04:43,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION (42 of 46 remaining) [2021-08-30 17:04:43,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION (41 of 46 remaining) [2021-08-30 17:04:43,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION (40 of 46 remaining) [2021-08-30 17:04:43,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION (39 of 46 remaining) [2021-08-30 17:04:43,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION (38 of 46 remaining) [2021-08-30 17:04:43,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION (37 of 46 remaining) [2021-08-30 17:04:43,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION (36 of 46 remaining) [2021-08-30 17:04:43,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION (35 of 46 remaining) [2021-08-30 17:04:43,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION (34 of 46 remaining) [2021-08-30 17:04:43,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr6REQUIRES_VIOLATION (33 of 46 remaining) [2021-08-30 17:04:43,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr7REQUIRES_VIOLATION (32 of 46 remaining) [2021-08-30 17:04:43,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr8REQUIRES_VIOLATION (31 of 46 remaining) [2021-08-30 17:04:43,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr9REQUIRES_VIOLATION (30 of 46 remaining) [2021-08-30 17:04:43,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION (29 of 46 remaining) [2021-08-30 17:04:43,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION (28 of 46 remaining) [2021-08-30 17:04:43,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (27 of 46 remaining) [2021-08-30 17:04:43,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (26 of 46 remaining) [2021-08-30 17:04:43,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (25 of 46 remaining) [2021-08-30 17:04:43,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (24 of 46 remaining) [2021-08-30 17:04:43,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (23 of 46 remaining) [2021-08-30 17:04:43,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (22 of 46 remaining) [2021-08-30 17:04:43,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (21 of 46 remaining) [2021-08-30 17:04:43,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (20 of 46 remaining) [2021-08-30 17:04:43,124 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (19 of 46 remaining) [2021-08-30 17:04:43,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (18 of 46 remaining) [2021-08-30 17:04:43,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE (17 of 46 remaining) [2021-08-30 17:04:43,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11ASSERT_VIOLATIONMEMORY_FREE (16 of 46 remaining) [2021-08-30 17:04:43,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ASSERT_VIOLATIONMEMORY_FREE (15 of 46 remaining) [2021-08-30 17:04:43,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (14 of 46 remaining) [2021-08-30 17:04:43,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (13 of 46 remaining) [2021-08-30 17:04:43,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (12 of 46 remaining) [2021-08-30 17:04:43,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (11 of 46 remaining) [2021-08-30 17:04:43,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ENSURES_VIOLATIONMEMORY_LEAK (10 of 46 remaining) [2021-08-30 17:04:43,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION (9 of 46 remaining) [2021-08-30 17:04:43,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION (8 of 46 remaining) [2021-08-30 17:04:43,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (7 of 46 remaining) [2021-08-30 17:04:43,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (6 of 46 remaining) [2021-08-30 17:04:43,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (5 of 46 remaining) [2021-08-30 17:04:43,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5REQUIRES_VIOLATION (4 of 46 remaining) [2021-08-30 17:04:43,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6REQUIRES_VIOLATION (3 of 46 remaining) [2021-08-30 17:04:43,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 46 remaining) [2021-08-30 17:04:43,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 46 remaining) [2021-08-30 17:04:43,131 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 46 remaining) [2021-08-30 17:04:43,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:43,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:04:43,349 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:04:43,352 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:04:43,353 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:04:43,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:04:43 BoogieIcfgContainer [2021-08-30 17:04:43,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:04:43,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:04:43,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:04:43,359 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:04:43,364 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:36" (3/4) ... [2021-08-30 17:04:43,366 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:04:43,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:04:43,367 INFO L158 Benchmark]: Toolchain (without parser) took 7932.63ms. Allocated memory was 52.4MB in the beginning and 81.8MB in the end (delta: 29.4MB). Free memory was 27.8MB in the beginning and 34.9MB in the end (delta: -7.1MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2021-08-30 17:04:43,367 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:04:43,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.59ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 27.6MB in the beginning and 40.5MB in the end (delta: -12.9MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-08-30 17:04:43,368 INFO L158 Benchmark]: Boogie Preprocessor took 95.28ms. Allocated memory is still 67.1MB. Free memory was 40.5MB in the beginning and 37.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 17:04:43,368 INFO L158 Benchmark]: RCFGBuilder took 582.79ms. Allocated memory is still 67.1MB. Free memory was 37.1MB in the beginning and 38.3MB in the end (delta: -1.2MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2021-08-30 17:04:43,368 INFO L158 Benchmark]: TraceAbstraction took 6821.65ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 37.7MB in the beginning and 35.5MB in the end (delta: 2.3MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2021-08-30 17:04:43,368 INFO L158 Benchmark]: Witness Printer took 7.98ms. Allocated memory is still 81.8MB. Free memory was 35.5MB in the beginning and 34.9MB in the end (delta: 579.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 17:04:43,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 52.4MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.59ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 27.6MB in the beginning and 40.5MB in the end (delta: -12.9MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 95.28ms. Allocated memory is still 67.1MB. Free memory was 40.5MB in the beginning and 37.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 582.79ms. Allocated memory is still 67.1MB. Free memory was 37.1MB in the beginning and 38.3MB in the end (delta: -1.2MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6821.65ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 37.7MB in the beginning and 35.5MB in the end (delta: 2.3MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Witness Printer took 7.98ms. Allocated memory is still 81.8MB. Free memory was 35.5MB in the beginning and 34.9MB in the end (delta: 579.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L687] static struct L1 *list; [L689] CALL l1_insert(&list) [L676] CALL, EXPR calloc_model(1U, sizeof *item) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L676] RET, EXPR calloc_model(1U, sizeof *item) [L676] struct L1 *item = calloc_model(1U, sizeof *item); [L677] COND FALSE !(!item) [L680] CALL l2_insert(&item->l2) [L655] CALL, EXPR calloc_model(1U, sizeof *item) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L655] RET, EXPR calloc_model(1U, sizeof *item) [L655] struct L2 *item = calloc_model(1U, sizeof *item); [L656] COND FALSE !(!item) [L658] item->proto = malloc(119U) - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 141 locations, 46 error locations. Started 1 CEGAR loops. OverallTime: 6754.35ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 16.62ms, AutomataDifference: 1064.28ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 12.84ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 874.27ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 146 SdHoareTripleChecker+Invalid, 686.55ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 16 IncrementalHoareTripleChecker+Unchecked, 598 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1376 IncrementalHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 59 mSDtfsCounter, 1376 mSolverCounterSat, 13.98ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 82.61ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 68.13ms AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 45.36ms SsaConstructionTime, 93.78ms SatisfiabilityAnalysisTime, 472.29ms InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 1 QuantifiedInterpolants, 172 SizeOfPredicates, 4 NumberOfNonLiveVariables, 528 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:04:43,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:04:45,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:04:45,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:04:45,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:04:45,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:04:45,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:04:45,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:04:45,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:04:45,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:04:45,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:04:45,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:04:45,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:04:45,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:04:45,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:04:45,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:04:45,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:04:45,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:04:45,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:04:45,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:04:45,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:04:45,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:04:45,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:04:45,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:04:45,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:04:45,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:04:45,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:04:45,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:04:45,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:04:45,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:04:45,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:04:45,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:04:45,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:04:45,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:04:45,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:04:45,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:04:45,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:04:45,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:04:45,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:04:45,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:04:45,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:04:45,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:04:45,334 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:04:45,371 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:04:45,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:04:45,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:04:45,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:04:45,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:04:45,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:04:45,375 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:04:45,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:04:45,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:04:45,376 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:04:45,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:04:45,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:04:45,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:04:45,377 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:04:45,377 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:04:45,377 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:04:45,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:04:45,378 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:04:45,378 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:04:45,378 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:04:45,378 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:04:45,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:04:45,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:04:45,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:04:45,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:04:45,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:04:45,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:04:45,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:04:45,380 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:04:45,380 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:04:45,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:04:45,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:04:45,381 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebc5ac28f2460014630964c3ebebf9e4c3b4bcee [2021-08-30 17:04:45,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:04:45,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:04:45,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:04:45,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:04:45,745 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:04:45,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0220.i [2021-08-30 17:04:45,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d9a9a7a/124c40f6f8844272927e1ca74c3a170d/FLAGafd834c55 [2021-08-30 17:04:46,333 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:04:46,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0220.i [2021-08-30 17:04:46,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d9a9a7a/124c40f6f8844272927e1ca74c3a170d/FLAGafd834c55 [2021-08-30 17:04:46,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d9a9a7a/124c40f6f8844272927e1ca74c3a170d [2021-08-30 17:04:46,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:04:46,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:04:46,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:04:46,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:04:46,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:04:46,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:46" (1/1) ... [2021-08-30 17:04:46,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f958b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46, skipping insertion in model container [2021-08-30 17:04:46,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:46" (1/1) ... [2021-08-30 17:04:46,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:04:46,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:04:47,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:04:47,145 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:04:47,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:04:47,212 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:04:47,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:47 WrapperNode [2021-08-30 17:04:47,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:04:47,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:04:47,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:04:47,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:04:47,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:47" (1/1) ... [2021-08-30 17:04:47,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:47" (1/1) ... [2021-08-30 17:04:47,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:47" (1/1) ... [2021-08-30 17:04:47,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:47" (1/1) ... [2021-08-30 17:04:47,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:47" (1/1) ... [2021-08-30 17:04:47,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:47" (1/1) ... [2021-08-30 17:04:47,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:47" (1/1) ... [2021-08-30 17:04:47,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:04:47,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:04:47,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:04:47,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:04:47,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:47" (1/1) ... [2021-08-30 17:04:47,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:04:47,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:04:47,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:04:47,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:04:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:04:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:04:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:04:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:04:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:04:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:04:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:04:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:04:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:04:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-30 17:04:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-30 17:04:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-30 17:04:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-30 17:04:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:04:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:04:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:04:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:04:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:04:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:04:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:04:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:04:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:04:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:04:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:04:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:04:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:04:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:04:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:04:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:04:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:04:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:04:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:04:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:04:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:04:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:04:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:04:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:04:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:04:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:04:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:04:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:04:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:04:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:04:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:04:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:04:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:04:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:04:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:04:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:04:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:04:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:04:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:04:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:04:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:04:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:04:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:04:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:04:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:04:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:04:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:04:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:04:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:04:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:04:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:04:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:04:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:04:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:04:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:04:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:04:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:04:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:04:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:04:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:04:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:04:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:04:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:04:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:04:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:04:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:04:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:04:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:04:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:04:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:04:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:04:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:04:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:04:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:04:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:04:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:04:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:04:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:04:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:04:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:04:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:04:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:04:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:04:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:04:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:04:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:04:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:04:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:04:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:04:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:04:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:04:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:04:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:04:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:04:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:04:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:04:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:04:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:04:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:04:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:04:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:04:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:04:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:04:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:04:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:04:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:04:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:04:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:04:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:04:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:04:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:04:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:04:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:04:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:04:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:04:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-30 17:04:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-30 17:04:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:04:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-30 17:04:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-30 17:04:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-30 17:04:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-30 17:04:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-30 17:04:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-30 17:04:47,396 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-30 17:04:47,396 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-30 17:04:47,396 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-30 17:04:47,396 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-30 17:04:47,396 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-30 17:04:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-30 17:04:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-30 17:04:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-30 17:04:47,400 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-30 17:04:47,400 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-30 17:04:47,400 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-30 17:04:47,400 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-30 17:04:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-30 17:04:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-30 17:04:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-30 17:04:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-30 17:04:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-30 17:04:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-30 17:04:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-30 17:04:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-30 17:04:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-30 17:04:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-30 17:04:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-30 17:04:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-30 17:04:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-30 17:04:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-30 17:04:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-30 17:04:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-30 17:04:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-30 17:04:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-30 17:04:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-30 17:04:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-30 17:04:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-30 17:04:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-30 17:04:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-30 17:04:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-30 17:04:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-30 17:04:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-30 17:04:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-30 17:04:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-30 17:04:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-30 17:04:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-30 17:04:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:04:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:04:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:04:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-30 17:04:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:04:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:04:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-30 17:04:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:04:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-30 17:04:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:04:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:04:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-30 17:04:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:04:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:04:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:04:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-30 17:04:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-30 17:04:47,775 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:04:47,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:04:47,911 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-30 17:04:47,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:47 BoogieIcfgContainer [2021-08-30 17:04:47,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:04:47,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:04:47,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:04:47,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:04:47,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:04:46" (1/3) ... [2021-08-30 17:04:47,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3570ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:47, skipping insertion in model container [2021-08-30 17:04:47,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:47" (2/3) ... [2021-08-30 17:04:47,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3570ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:47, skipping insertion in model container [2021-08-30 17:04:47,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:47" (3/3) ... [2021-08-30 17:04:47,922 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0220.i [2021-08-30 17:04:47,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:04:47,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-08-30 17:04:47,972 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:04:47,980 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:04:47,980 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-08-30 17:04:48,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 62 states have (on average 1.8870967741935485) internal successors, (117), 106 states have internal predecessors, (117), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-08-30 17:04:48,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:04:48,024 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:48,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:48,025 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:48,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:48,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1291303161, now seen corresponding path program 1 times [2021-08-30 17:04:48,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:48,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036486962] [2021-08-30 17:04:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:48,041 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:48,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:48,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:48,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 17:04:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:48,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-30 17:04:48,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:48,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:48,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:48,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036486962] [2021-08-30 17:04:48,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036486962] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:48,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:48,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:04:48,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433703723] [2021-08-30 17:04:48,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-30 17:04:48,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-30 17:04:48,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-30 17:04:48,384 INFO L87 Difference]: Start difference. First operand has 121 states, 62 states have (on average 1.8870967741935485) internal successors, (117), 106 states have internal predecessors, (117), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:48,649 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-08-30 17:04:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-30 17:04:48,651 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:04:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:48,658 INFO L225 Difference]: With dead ends: 121 [2021-08-30 17:04:48,658 INFO L226 Difference]: Without dead ends: 118 [2021-08-30 17:04:48,659 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.10ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-30 17:04:48,662 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 196.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 237.07ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:48,663 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 110 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 237.07ms Time] [2021-08-30 17:04:48,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-30 17:04:48,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-30 17:04:48,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 104 states have internal predecessors, (108), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-30 17:04:48,696 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 7 [2021-08-30 17:04:48,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:48,696 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-30 17:04:48,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:48,697 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-30 17:04:48,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:04:48,697 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:48,697 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:48,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-30 17:04:48,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:48,911 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:48,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:48,912 INFO L82 PathProgramCache]: Analyzing trace with hash 892717489, now seen corresponding path program 1 times [2021-08-30 17:04:48,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:48,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264056641] [2021-08-30 17:04:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:48,913 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:48,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:48,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:48,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 17:04:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:49,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 17:04:49,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:49,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:04:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:49,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:49,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:49,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264056641] [2021-08-30 17:04:49,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264056641] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:49,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:49,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:04:49,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542759750] [2021-08-30 17:04:49,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:04:49,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:49,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:04:49,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:49,195 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:49,594 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2021-08-30 17:04:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:04:49,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 17:04:49,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:49,596 INFO L225 Difference]: With dead ends: 117 [2021-08-30 17:04:49,596 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:04:49,596 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:04:49,597 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 289.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 378.38ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:49,598 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 213 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 378.38ms Time] [2021-08-30 17:04:49,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:04:49,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:04:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 59 states have (on average 1.8135593220338984) internal successors, (107), 103 states have internal predecessors, (107), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-30 17:04:49,607 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 10 [2021-08-30 17:04:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:49,607 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-30 17:04:49,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:49,608 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-30 17:04:49,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 17:04:49,608 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:49,608 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:49,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-08-30 17:04:49,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:49,818 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:49,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:49,818 INFO L82 PathProgramCache]: Analyzing trace with hash 892717490, now seen corresponding path program 1 times [2021-08-30 17:04:49,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:49,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007990468] [2021-08-30 17:04:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:49,819 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:49,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:49,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:49,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 17:04:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:49,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:04:49,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:50,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-08-30 17:04:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:50,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:50,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:50,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007990468] [2021-08-30 17:04:50,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007990468] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:50,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:50,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 4 [2021-08-30 17:04:50,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626151682] [2021-08-30 17:04:50,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:04:50,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:50,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:04:50,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:04:50,362 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:52,223 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2021-08-30 17:04:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 17:04:52,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 17:04:52,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:52,224 INFO L225 Difference]: With dead ends: 116 [2021-08-30 17:04:52,224 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 17:04:52,225 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 208.32ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:04:52,226 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1559.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.24ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1797.59ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:52,226 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 323 Unknown, 0 Unchecked, 7.24ms Time], IncrementalHoareTripleChecker [4 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 1797.59ms Time] [2021-08-30 17:04:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 17:04:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-30 17:04:52,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 58 states have (on average 1.8275862068965518) internal successors, (106), 102 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-30 17:04:52,243 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 10 [2021-08-30 17:04:52,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:52,243 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-30 17:04:52,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:04:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-30 17:04:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-30 17:04:52,244 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:52,245 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:52,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:52,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:52,451 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:52,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:52,451 INFO L82 PathProgramCache]: Analyzing trace with hash 71295803, now seen corresponding path program 1 times [2021-08-30 17:04:52,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:52,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276181347] [2021-08-30 17:04:52,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:52,452 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:52,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:52,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:52,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 17:04:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:52,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:04:52,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:52,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:04:52,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-30 17:04:53,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:53,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276181347] [2021-08-30 17:04:53,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276181347] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-30 17:04:53,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 17:04:53,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-08-30 17:04:53,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11620100] [2021-08-30 17:04:53,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:04:53,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:53,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:04:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:04:53,807 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 17:04:55,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:55,445 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-08-30 17:04:55,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:04:55,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 37 [2021-08-30 17:04:55,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:55,446 INFO L225 Difference]: With dead ends: 122 [2021-08-30 17:04:55,447 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:04:55,447 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 519.57ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-30 17:04:55,448 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1272.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.82ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1487.45ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:55,448 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 55 Invalid, 546 Unknown, 0 Unchecked, 5.82ms Time], IncrementalHoareTripleChecker [1 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1487.45ms Time] [2021-08-30 17:04:55,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:04:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:04:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 59 states have (on average 1.8135593220338984) internal successors, (107), 103 states have internal predecessors, (107), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-30 17:04:55,457 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 37 [2021-08-30 17:04:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:55,458 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-30 17:04:55,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 17:04:55,458 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-30 17:04:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-30 17:04:55,459 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:55,459 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:55,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:55,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:55,661 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:55,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:55,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1772361669, now seen corresponding path program 1 times [2021-08-30 17:04:55,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:55,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484762956] [2021-08-30 17:04:55,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:04:55,662 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:55,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:55,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:55,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 17:04:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:04:55,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 17:04:55,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 17:04:56,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-30 17:04:57,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:57,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484762956] [2021-08-30 17:04:57,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484762956] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:04:57,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:04:57,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-08-30 17:04:57,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075517746] [2021-08-30 17:04:57,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 17:04:57,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:57,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 17:04:57,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-08-30 17:04:57,056 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 11 states, 9 states have (on average 4.333333333333333) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:04:59,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:04:59,005 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-08-30 17:04:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:04:59,006 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.333333333333333) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 39 [2021-08-30 17:04:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:04:59,007 INFO L225 Difference]: With dead ends: 123 [2021-08-30 17:04:59,007 INFO L226 Difference]: Without dead ends: 118 [2021-08-30 17:04:59,007 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 613.52ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-30 17:04:59,008 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1535.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.68ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1804.11ms IncrementalHoareTripleChecker+Time [2021-08-30 17:04:59,008 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 68 Invalid, 665 Unknown, 0 Unchecked, 8.68ms Time], IncrementalHoareTripleChecker [5 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 1804.11ms Time] [2021-08-30 17:04:59,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-30 17:04:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-30 17:04:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 60 states have (on average 1.8) internal successors, (108), 104 states have internal predecessors, (108), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:04:59,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-30 17:04:59,022 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 39 [2021-08-30 17:04:59,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:04:59,022 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-30 17:04:59,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.333333333333333) internal successors, (39), 11 states have internal predecessors, (39), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:04:59,023 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-30 17:04:59,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-30 17:04:59,024 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:04:59,024 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:04:59,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 17:04:59,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:04:59,235 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:04:59,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:04:59,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1896960251, now seen corresponding path program 2 times [2021-08-30 17:04:59,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:04:59,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87196204] [2021-08-30 17:04:59,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:04:59,237 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:04:59,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:04:59,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:04:59,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 17:04:59,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 17:04:59,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:04:59,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 17:04:59,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:04:59,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:04:59,557 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 17:04:59,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2021-08-30 17:04:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-30 17:04:59,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:04:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-30 17:04:59,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:04:59,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87196204] [2021-08-30 17:04:59,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87196204] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:04:59,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:04:59,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2021-08-30 17:04:59,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175311574] [2021-08-30 17:04:59,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:04:59,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:04:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:04:59,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:04:59,760 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-30 17:05:00,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:00,091 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2021-08-30 17:05:00,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:05:00,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2021-08-30 17:05:00,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:00,092 INFO L225 Difference]: With dead ends: 115 [2021-08-30 17:05:00,092 INFO L226 Difference]: Without dead ends: 115 [2021-08-30 17:05:00,092 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 73.97ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:05:00,093 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 37 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 266.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.11ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 314.51ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:00,093 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 44 Invalid, 410 Unknown, 0 Unchecked, 2.11ms Time], IncrementalHoareTripleChecker [2 Valid, 320 Invalid, 0 Unknown, 88 Unchecked, 314.51ms Time] [2021-08-30 17:05:00,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-30 17:05:00,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-08-30 17:05:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 60 states have (on average 1.75) internal successors, (105), 101 states have internal predecessors, (105), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-08-30 17:05:00,099 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 41 [2021-08-30 17:05:00,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:00,100 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-08-30 17:05:00,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-30 17:05:00,101 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-08-30 17:05:00,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-30 17:05:00,101 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:00,102 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:05:00,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:00,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:00,317 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:00,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1896960252, now seen corresponding path program 1 times [2021-08-30 17:05:00,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:00,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79761268] [2021-08-30 17:05:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:05:00,319 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:00,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:00,320 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:00,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 17:05:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:05:00,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 17:05:00,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:00,761 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-30 17:05:00,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:05:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-30 17:05:01,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:05:01,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79761268] [2021-08-30 17:05:01,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79761268] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:05:01,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:05:01,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-30 17:05:01,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636534526] [2021-08-30 17:05:01,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 17:05:01,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:05:01,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 17:05:01,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-08-30 17:05:01,764 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 13 states, 11 states have (on average 3.727272727272727) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:03,988 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-08-30 17:05:03,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:05:03,989 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.727272727272727) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 41 [2021-08-30 17:05:03,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:03,990 INFO L225 Difference]: With dead ends: 121 [2021-08-30 17:05:03,990 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 17:05:03,990 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 767.76ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-30 17:05:03,991 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1735.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.31ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2033.19ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:03,991 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 89 Invalid, 873 Unknown, 0 Unchecked, 6.31ms Time], IncrementalHoareTripleChecker [5 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 2033.19ms Time] [2021-08-30 17:05:03,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 17:05:03,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-30 17:05:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 61 states have (on average 1.7377049180327868) internal successors, (106), 102 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-30 17:05:03,996 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 41 [2021-08-30 17:05:03,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:03,997 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-30 17:05:03,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.727272727272727) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-30 17:05:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-30 17:05:03,998 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:03,998 INFO L513 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:05:04,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:04,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:04,205 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:04,205 INFO L82 PathProgramCache]: Analyzing trace with hash 810613510, now seen corresponding path program 2 times [2021-08-30 17:05:04,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:04,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671784890] [2021-08-30 17:05:04,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:05:04,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:04,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:04,207 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:04,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-30 17:05:04,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 17:05:04,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:05:04,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-30 17:05:04,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-30 17:05:04,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:05:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-08-30 17:05:05,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:05:05,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671784890] [2021-08-30 17:05:05,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671784890] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:05:05,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:05:05,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-30 17:05:05,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376633619] [2021-08-30 17:05:05,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 17:05:05,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:05:05,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 17:05:05,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-08-30 17:05:05,753 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 15 states have internal predecessors, (43), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:07,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:07,860 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-08-30 17:05:07,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:05:07,860 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 15 states have internal predecessors, (43), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 43 [2021-08-30 17:05:07,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:07,861 INFO L225 Difference]: With dead ends: 122 [2021-08-30 17:05:07,861 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:05:07,861 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 773.88ms TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-08-30 17:05:07,862 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1664.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.23ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1955.94ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:07,862 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 98 Invalid, 990 Unknown, 0 Unchecked, 6.23ms Time], IncrementalHoareTripleChecker [7 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 1955.94ms Time] [2021-08-30 17:05:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:05:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:05:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 103 states have internal predecessors, (107), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:07,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-30 17:05:07,871 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 43 [2021-08-30 17:05:07,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:07,872 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-30 17:05:07,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 15 states have internal predecessors, (43), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:07,872 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-30 17:05:07,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-30 17:05:07,873 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:07,874 INFO L513 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:05:07,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:08,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:08,077 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:08,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:08,078 INFO L82 PathProgramCache]: Analyzing trace with hash 126824124, now seen corresponding path program 3 times [2021-08-30 17:05:08,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:08,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711414017] [2021-08-30 17:05:08,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 17:05:08,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:08,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:08,079 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:08,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-30 17:05:08,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-30 17:05:08,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:05:08,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-30 17:05:08,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:08,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-08-30 17:05:08,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:05:09,526 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:05:09,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-08-30 17:05:09,532 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 17:05:09,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-08-30 17:05:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-30 17:05:09,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:05:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-08-30 17:05:13,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:05:13,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711414017] [2021-08-30 17:05:13,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711414017] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:05:13,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:05:13,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2021-08-30 17:05:13,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173444316] [2021-08-30 17:05:13,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 17:05:13,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:05:13,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 17:05:13,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2021-08-30 17:05:13,866 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-30 17:05:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:14,531 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2021-08-30 17:05:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:05:14,532 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 45 [2021-08-30 17:05:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:14,533 INFO L225 Difference]: With dead ends: 116 [2021-08-30 17:05:14,533 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 17:05:14,533 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4091.34ms TimeCoverageRelationStatistics Valid=41, Invalid=140, Unknown=1, NotChecked=0, Total=182 [2021-08-30 17:05:14,534 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 444.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.14ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 322 IncrementalHoareTripleChecker+Unchecked, 506.60ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:14,534 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 68 Invalid, 523 Unknown, 0 Unchecked, 4.14ms Time], IncrementalHoareTripleChecker [2 Valid, 199 Invalid, 0 Unknown, 322 Unchecked, 506.60ms Time] [2021-08-30 17:05:14,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 17:05:14,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-30 17:05:14,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 102 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:14,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-30 17:05:14,538 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 45 [2021-08-30 17:05:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:14,538 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-30 17:05:14,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-30 17:05:14,539 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-30 17:05:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-30 17:05:14,539 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:14,540 INFO L513 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:05:14,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:14,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:14,755 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting l2_insertErr3REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:14,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:14,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1618899805, now seen corresponding path program 1 times [2021-08-30 17:05:14,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:14,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513157935] [2021-08-30 17:05:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:05:14,756 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:14,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:14,757 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:14,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-30 17:05:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:05:14,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:05:14,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-30 17:05:15,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:05:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-30 17:05:16,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:05:16,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513157935] [2021-08-30 17:05:16,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513157935] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:05:16,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:05:16,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-08-30 17:05:16,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90061687] [2021-08-30 17:05:16,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-30 17:05:16,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:05:16,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-30 17:05:16,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-08-30 17:05:16,726 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:19,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:19,518 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-08-30 17:05:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:05:19,518 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 47 [2021-08-30 17:05:19,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:19,519 INFO L225 Difference]: With dead ends: 122 [2021-08-30 17:05:19,519 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:05:19,520 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1173.73ms TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-08-30 17:05:19,520 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2179.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.58ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2525.79ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:19,520 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 101 Invalid, 995 Unknown, 0 Unchecked, 7.58ms Time], IncrementalHoareTripleChecker [11 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 2525.79ms Time] [2021-08-30 17:05:19,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:05:19,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:05:19,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 63 states have (on average 1.6984126984126984) internal successors, (107), 103 states have internal predecessors, (107), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:19,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-30 17:05:19,523 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 47 [2021-08-30 17:05:19,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:19,524 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-30 17:05:19,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:19,524 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-30 17:05:19,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-30 17:05:19,525 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:19,525 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:05:19,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-08-30 17:05:19,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:19,729 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting l2_insertErr3REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:19,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:19,729 INFO L82 PathProgramCache]: Analyzing trace with hash 937982055, now seen corresponding path program 2 times [2021-08-30 17:05:19,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:19,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874884711] [2021-08-30 17:05:19,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:05:19,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:19,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:19,737 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:19,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-30 17:05:19,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 17:05:19,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:05:19,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 17:05:19,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-08-30 17:05:19,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:05:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-08-30 17:05:20,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:05:20,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874884711] [2021-08-30 17:05:20,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874884711] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:05:20,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:05:20,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:05:20,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585607523] [2021-08-30 17:05:20,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:05:20,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:05:20,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:05:20,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:05:20,053 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 17:05:20,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:20,524 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2021-08-30 17:05:20,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:05:20,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2021-08-30 17:05:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:20,526 INFO L225 Difference]: With dead ends: 116 [2021-08-30 17:05:20,526 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 17:05:20,526 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:05:20,527 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 405.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 461.05ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:20,527 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 29 Invalid, 189 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 461.05ms Time] [2021-08-30 17:05:20,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 17:05:20,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-30 17:05:20,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 102 states have internal predecessors, (106), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-30 17:05:20,530 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 49 [2021-08-30 17:05:20,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:20,530 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-30 17:05:20,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 17:05:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-30 17:05:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-30 17:05:20,531 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:20,532 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 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] [2021-08-30 17:05:20,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:20,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:20,748 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting l2_insertErr4REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:20,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:20,748 INFO L82 PathProgramCache]: Analyzing trace with hash -542376120, now seen corresponding path program 1 times [2021-08-30 17:05:20,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:20,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241629425] [2021-08-30 17:05:20,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:05:20,749 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:20,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:20,750 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:20,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-30 17:05:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:05:20,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 17:05:20,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-30 17:05:21,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:05:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-08-30 17:05:23,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:05:23,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241629425] [2021-08-30 17:05:23,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241629425] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:05:23,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:05:23,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-30 17:05:23,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410652449] [2021-08-30 17:05:23,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-30 17:05:23,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:05:23,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-30 17:05:23,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-08-30 17:05:23,007 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 19 states, 17 states have (on average 3.0) internal successors, (51), 19 states have internal predecessors, (51), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:27,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:27,524 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-08-30 17:05:27,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 17:05:27,524 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.0) internal successors, (51), 19 states have internal predecessors, (51), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 51 [2021-08-30 17:05:27,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:27,525 INFO L225 Difference]: With dead ends: 122 [2021-08-30 17:05:27,525 INFO L226 Difference]: Without dead ends: 117 [2021-08-30 17:05:27,526 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1426.64ms TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-08-30 17:05:27,526 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3692.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.88ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4288.44ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:27,527 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 141 Invalid, 1437 Unknown, 0 Unchecked, 10.88ms Time], IncrementalHoareTripleChecker [11 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 4288.44ms Time] [2021-08-30 17:05:27,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-30 17:05:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-30 17:05:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 64 states have (on average 1.671875) internal successors, (107), 103 states have internal predecessors, (107), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-30 17:05:27,530 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 51 [2021-08-30 17:05:27,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:27,530 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-30 17:05:27,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.0) internal successors, (51), 19 states have internal predecessors, (51), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:27,531 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-30 17:05:27,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-30 17:05:27,532 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:27,532 INFO L513 BasicCegarLoop]: trace histogram [12, 2, 2, 2, 2, 2, 2, 2, 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] [2021-08-30 17:05:27,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:27,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:27,741 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting l2_insertErr4REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:27,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1454408318, now seen corresponding path program 2 times [2021-08-30 17:05:27,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:27,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716490668] [2021-08-30 17:05:27,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:05:27,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:27,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:27,743 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:27,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-30 17:05:27,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 17:05:27,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:05:27,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 17:05:27,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 58 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-30 17:05:28,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:05:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-08-30 17:05:29,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:05:29,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716490668] [2021-08-30 17:05:29,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716490668] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:05:29,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:05:29,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-30 17:05:29,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451340672] [2021-08-30 17:05:29,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-30 17:05:29,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:05:29,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-30 17:05:29,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-08-30 17:05:29,963 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 21 states, 19 states have (on average 2.789473684210526) internal successors, (53), 21 states have internal predecessors, (53), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:05:34,165 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-08-30 17:05:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:05:34,165 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.789473684210526) internal successors, (53), 21 states have internal predecessors, (53), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 53 [2021-08-30 17:05:34,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:05:34,166 INFO L225 Difference]: With dead ends: 123 [2021-08-30 17:05:34,166 INFO L226 Difference]: Without dead ends: 118 [2021-08-30 17:05:34,167 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1477.79ms TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-08-30 17:05:34,167 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3320.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.99ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3887.26ms IncrementalHoareTripleChecker+Time [2021-08-30 17:05:34,168 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 109 Invalid, 1140 Unknown, 0 Unchecked, 8.99ms Time], IncrementalHoareTripleChecker [15 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 3887.26ms Time] [2021-08-30 17:05:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-30 17:05:34,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-30 17:05:34,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 104 states have internal predecessors, (108), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-08-30 17:05:34,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-30 17:05:34,171 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 53 [2021-08-30 17:05:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:05:34,172 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-30 17:05:34,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.789473684210526) internal successors, (53), 21 states have internal predecessors, (53), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:05:34,172 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-30 17:05:34,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-30 17:05:34,173 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:05:34,173 INFO L513 BasicCegarLoop]: trace histogram [14, 2, 2, 2, 2, 2, 2, 2, 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] [2021-08-30 17:05:34,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-30 17:05:34,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:05:34,385 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting l2_insertErr4REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:05:34,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:05:34,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1274322296, now seen corresponding path program 3 times [2021-08-30 17:05:34,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:05:34,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106268808] [2021-08-30 17:05:34,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 17:05:34,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:05:34,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:05:34,387 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:05:34,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-30 17:05:34,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-30 17:05:34,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:05:34,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 17:05:34,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:05:34,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:05:34,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2021-08-30 17:05:34,926 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-30 17:05:34,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-08-30 17:05:35,047 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-08-30 17:05:35,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 52 [2021-08-30 17:05:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-08-30 17:05:35,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:06:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-08-30 17:06:22,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:06:22,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106268808] [2021-08-30 17:06:22,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106268808] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:06:22,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:06:22,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-08-30 17:06:22,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061089356] [2021-08-30 17:06:22,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-30 17:06:22,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:06:22,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-30 17:06:22,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=304, Unknown=13, NotChecked=0, Total=380 [2021-08-30 17:06:22,382 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 20 states, 18 states have (on average 2.611111111111111) internal successors, (47), 14 states have internal predecessors, (47), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:06:27,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:06:27,582 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2021-08-30 17:06:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 17:06:27,583 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.611111111111111) internal successors, (47), 14 states have internal predecessors, (47), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 55 [2021-08-30 17:06:27,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:06:27,584 INFO L225 Difference]: With dead ends: 130 [2021-08-30 17:06:27,585 INFO L226 Difference]: Without dead ends: 130 [2021-08-30 17:06:27,585 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 85 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 51591.74ms TimeCoverageRelationStatistics Valid=96, Invalid=440, Unknown=16, NotChecked=0, Total=552 [2021-08-30 17:06:27,585 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 521.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.76ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 574 IncrementalHoareTripleChecker+Unchecked, 594.09ms IncrementalHoareTripleChecker+Time [2021-08-30 17:06:27,586 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 91 Invalid, 1014 Unknown, 0 Unchecked, 4.76ms Time], IncrementalHoareTripleChecker [9 Valid, 431 Invalid, 0 Unknown, 574 Unchecked, 594.09ms Time] [2021-08-30 17:06:27,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-08-30 17:06:27,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2021-08-30 17:06:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 74 states have (on average 1.5945945945945945) internal successors, (118), 113 states have internal predecessors, (118), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-30 17:06:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2021-08-30 17:06:27,591 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 55 [2021-08-30 17:06:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:06:27,591 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2021-08-30 17:06:27,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.611111111111111) internal successors, (47), 14 states have internal predecessors, (47), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:06:27,591 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2021-08-30 17:06:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-30 17:06:27,592 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:06:27,592 INFO L513 BasicCegarLoop]: trace histogram [14, 2, 2, 2, 2, 2, 2, 2, 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] [2021-08-30 17:06:27,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-30 17:06:27,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:06:27,797 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting l2_insertErr5REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:06:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:06:27,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1274322295, now seen corresponding path program 1 times [2021-08-30 17:06:27,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:06:27,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016909508] [2021-08-30 17:06:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:06:27,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:06:27,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:06:27,799 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:06:27,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-30 17:06:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:06:28,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-30 17:06:28,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:06:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 73 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-08-30 17:06:28,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:06:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-08-30 17:06:30,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:06:30,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016909508] [2021-08-30 17:06:30,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016909508] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:06:30,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:06:30,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-30 17:06:30,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495158425] [2021-08-30 17:06:30,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-30 17:06:30,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:06:30,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-30 17:06:30,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-08-30 17:06:30,588 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand has 23 states, 21 states have (on average 2.619047619047619) internal successors, (55), 23 states have internal predecessors, (55), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:06:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:06:34,286 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2021-08-30 17:06:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 17:06:34,286 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.619047619047619) internal successors, (55), 23 states have internal predecessors, (55), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2021-08-30 17:06:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:06:34,287 INFO L225 Difference]: With dead ends: 135 [2021-08-30 17:06:34,287 INFO L226 Difference]: Without dead ends: 130 [2021-08-30 17:06:34,288 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1838.01ms TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-08-30 17:06:34,288 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2936.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.37ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3439.52ms IncrementalHoareTripleChecker+Time [2021-08-30 17:06:34,288 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 146 Invalid, 1458 Unknown, 0 Unchecked, 10.37ms Time], IncrementalHoareTripleChecker [17 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 3439.52ms Time] [2021-08-30 17:06:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-08-30 17:06:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-08-30 17:06:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 75 states have (on average 1.5866666666666667) internal successors, (119), 114 states have internal predecessors, (119), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-30 17:06:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2021-08-30 17:06:34,292 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 55 [2021-08-30 17:06:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:06:34,293 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2021-08-30 17:06:34,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.619047619047619) internal successors, (55), 23 states have internal predecessors, (55), 4 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-08-30 17:06:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2021-08-30 17:06:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-30 17:06:34,294 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:06:34,294 INFO L513 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 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] [2021-08-30 17:06:34,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-30 17:06:34,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:06:34,501 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting l2_insertErr5REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:06:34,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:06:34,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1041129535, now seen corresponding path program 2 times [2021-08-30 17:06:34,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:06:34,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559462488] [2021-08-30 17:06:34,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 17:06:34,502 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:06:34,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:06:34,533 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:06:34,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-30 17:06:34,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 17:06:34,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 17:06:34,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-30 17:06:34,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:06:34,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:06:34,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-08-30 17:06:39,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2021-08-30 17:06:39,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-08-30 17:06:39,980 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-30 17:06:39,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-08-30 17:06:40,008 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 17:06:40,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2021-08-30 17:06:40,956 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:06:40,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-08-30 17:06:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 1 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-08-30 17:06:41,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:06:52,303 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_l2_insert_~list.base_BEFORE_CALL_4 (_ BitVec 32)) (v_l2_insert_~list.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (exists ((v_calloc_model_~ptr~0.base_99 (_ BitVec 32))) (and (or (exists ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_109 (_ BitVec 32)) (v_calloc_model_~nmemb_109 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_old(#length)| v_calloc_model_~ptr~0.base_99 (bvmul v_calloc_model_~nmemb_109 v_calloc_model_~size_109)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4)))) (not (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| v_calloc_model_~ptr~0.base_99))))))) (and (forall ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store |c_#length| |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4))) (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2))))) is different from false [2021-08-30 17:07:00,456 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_calloc_model_~ptr~0.base_100 (_ BitVec 32)) (v_l2_insert_~list.base_BEFORE_CALL_4 (_ BitVec 32)) (v_l2_insert_~list.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_calloc_model_~ptr~0.base_100)))) (and (forall ((v_calloc_model_~nmemb_110 (_ BitVec 32)) (|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_110 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_#length| v_calloc_model_~ptr~0.base_100 (bvmul v_calloc_model_~nmemb_110 v_calloc_model_~size_110)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4))) (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2))) (exists ((v_calloc_model_~ptr~0.base_99 (_ BitVec 32))) (and (or (exists ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_109 (_ BitVec 32)) (v_calloc_model_~nmemb_109 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_old(#length)| v_calloc_model_~ptr~0.base_99 (bvmul v_calloc_model_~nmemb_109 v_calloc_model_~size_109)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4)))) (not (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| v_calloc_model_~ptr~0.base_99))))))))) is different from false [2021-08-30 17:07:18,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-08-30 17:07:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 4 not checked. [2021-08-30 17:07:18,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:07:18,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559462488] [2021-08-30 17:07:18,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559462488] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:07:18,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:07:18,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-08-30 17:07:18,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708211188] [2021-08-30 17:07:18,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-30 17:07:18,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:07:18,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-30 17:07:18,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=355, Unknown=10, NotChecked=78, Total=506 [2021-08-30 17:07:18,874 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand has 23 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:07:23,003 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (= |c_#length| |c_old(#length)|) (forall ((v_calloc_model_~ptr~0.base_100 (_ BitVec 32)) (v_l2_insert_~list.base_BEFORE_CALL_4 (_ BitVec 32)) (v_l2_insert_~list.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_calloc_model_~ptr~0.base_100)))) (and (forall ((v_calloc_model_~nmemb_110 (_ BitVec 32)) (|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_110 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_#length| v_calloc_model_~ptr~0.base_100 (bvmul v_calloc_model_~nmemb_110 v_calloc_model_~size_110)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4))) (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2))) (exists ((v_calloc_model_~ptr~0.base_99 (_ BitVec 32))) (and (or (exists ((|v_l2_insert_#t~malloc8.base_22| (_ BitVec 32)) (v_calloc_model_~size_109 (_ BitVec 32)) (v_calloc_model_~nmemb_109 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store (store |c_old(#length)| v_calloc_model_~ptr~0.base_99 (bvmul v_calloc_model_~nmemb_109 v_calloc_model_~size_109)) |v_l2_insert_#t~malloc8.base_22| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4)))) (not (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| v_calloc_model_~ptr~0.base_99)))))))))) is different from false [2021-08-30 17:07:51,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:07:51,903 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2021-08-30 17:07:51,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 17:07:51,905 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 57 [2021-08-30 17:07:51,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:07:51,905 INFO L225 Difference]: With dead ends: 132 [2021-08-30 17:07:51,905 INFO L226 Difference]: Without dead ends: 132 [2021-08-30 17:07:51,906 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 64261.74ms TimeCoverageRelationStatistics Valid=95, Invalid=506, Unknown=11, NotChecked=144, Total=756 [2021-08-30 17:07:51,906 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1777.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.43ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1119 IncrementalHoareTripleChecker+Unchecked, 2136.77ms IncrementalHoareTripleChecker+Time [2021-08-30 17:07:51,906 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 149 Invalid, 1487 Unknown, 0 Unchecked, 9.43ms Time], IncrementalHoareTripleChecker [9 Valid, 359 Invalid, 0 Unknown, 1119 Unchecked, 2136.77ms Time] [2021-08-30 17:07:51,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-30 17:07:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2021-08-30 17:07:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 75 states have (on average 1.5733333333333333) internal successors, (118), 114 states have internal predecessors, (118), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-30 17:07:51,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2021-08-30 17:07:51,910 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 57 [2021-08-30 17:07:51,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:07:51,911 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2021-08-30 17:07:51,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 9 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:07:51,911 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2021-08-30 17:07:51,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-30 17:07:51,912 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:07:51,912 INFO L513 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 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] [2021-08-30 17:07:51,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-08-30 17:07:52,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:07:52,124 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting l2_insertErr7REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:07:52,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:07:52,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2084722741, now seen corresponding path program 1 times [2021-08-30 17:07:52,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:07:52,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52023109] [2021-08-30 17:07:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:07:52,125 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:07:52,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:07:52,126 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:07:52,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-08-30 17:07:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:07:52,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-30 17:07:52,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:07:52,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:07:52,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-08-30 17:07:54,483 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:07:54,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-08-30 17:07:54,492 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 17:07:54,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2021-08-30 17:07:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-08-30 17:07:54,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-08-30 17:08:01,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:08:01,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52023109] [2021-08-30 17:08:01,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52023109] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:08:01,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:08:01,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2021-08-30 17:08:01,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773969395] [2021-08-30 17:08:01,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 17:08:01,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:08:01,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 17:08:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=120, Unknown=2, NotChecked=0, Total=156 [2021-08-30 17:08:01,504 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-30 17:08:03,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:03,251 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2021-08-30 17:08:03,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:08:03,254 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2021-08-30 17:08:03,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:03,254 INFO L225 Difference]: With dead ends: 129 [2021-08-30 17:08:03,254 INFO L226 Difference]: Without dead ends: 129 [2021-08-30 17:08:03,255 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 6357.16ms TimeCoverageRelationStatistics Valid=41, Invalid=139, Unknown=2, NotChecked=0, Total=182 [2021-08-30 17:08:03,255 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1198.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 372 IncrementalHoareTripleChecker+Unchecked, 1470.91ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:03,256 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 81 Invalid, 551 Unknown, 0 Unchecked, 4.11ms Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 372 Unchecked, 1470.91ms Time] [2021-08-30 17:08:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-08-30 17:08:03,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-08-30 17:08:03,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 75 states have (on average 1.56) internal successors, (117), 113 states have internal predecessors, (117), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-30 17:08:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 136 transitions. [2021-08-30 17:08:03,260 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 136 transitions. Word has length 58 [2021-08-30 17:08:03,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:03,260 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 136 transitions. [2021-08-30 17:08:03,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-08-30 17:08:03,261 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 136 transitions. [2021-08-30 17:08:03,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-30 17:08:03,261 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:03,261 INFO L513 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2021-08-30 17:08:03,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:03,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:08:03,473 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting l2_insertErr8REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:08:03,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:03,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1963792725, now seen corresponding path program 1 times [2021-08-30 17:08:03,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:08:03,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94689396] [2021-08-30 17:08:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:03,474 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:08:03,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:08:03,474 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:08:03,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-08-30 17:08:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:03,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 17:08:03,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-08-30 17:08:03,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-08-30 17:08:03,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:08:03,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94689396] [2021-08-30 17:08:03,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94689396] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:08:03,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:08:03,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 17:08:03,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872459930] [2021-08-30 17:08:03,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 17:08:03,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:08:03,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 17:08:03,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:08:03,959 INFO L87 Difference]: Start difference. First operand 129 states and 136 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 17:08:04,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:04,690 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2021-08-30 17:08:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 17:08:04,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2021-08-30 17:08:04,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:04,692 INFO L225 Difference]: With dead ends: 128 [2021-08-30 17:08:04,692 INFO L226 Difference]: Without dead ends: 128 [2021-08-30 17:08:04,692 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 17:08:04,693 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 636.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 718.34ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:04,693 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 193 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 718.34ms Time] [2021-08-30 17:08:04,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-08-30 17:08:04,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-08-30 17:08:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 75 states have (on average 1.5466666666666666) internal successors, (116), 112 states have internal predecessors, (116), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-30 17:08:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2021-08-30 17:08:04,697 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 60 [2021-08-30 17:08:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:04,697 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2021-08-30 17:08:04,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 17:08:04,698 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2021-08-30 17:08:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-30 17:08:04,698 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:04,699 INFO L513 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2021-08-30 17:08:04,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:04,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:08:04,905 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting l2_insertErr9REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:08:04,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:04,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1963792724, now seen corresponding path program 1 times [2021-08-30 17:08:04,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:08:04,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114431602] [2021-08-30 17:08:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:04,906 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:08:04,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:08:04,906 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:08:04,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-08-30 17:08:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:05,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 17:08:05,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-08-30 17:08:05,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:05,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-08-30 17:08:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-08-30 17:08:06,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:08:06,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114431602] [2021-08-30 17:08:06,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114431602] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 17:08:06,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 17:08:06,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-08-30 17:08:06,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855492454] [2021-08-30 17:08:06,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-30 17:08:06,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:08:06,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-30 17:08:06,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-08-30 17:08:06,395 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 12 states have internal predecessors, (45), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-08-30 17:08:10,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:08:10,087 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2021-08-30 17:08:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:08:10,089 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 12 states have internal predecessors, (45), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 60 [2021-08-30 17:08:10,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:08:10,089 INFO L225 Difference]: With dead ends: 127 [2021-08-30 17:08:10,089 INFO L226 Difference]: Without dead ends: 127 [2021-08-30 17:08:10,090 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 885.75ms TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-08-30 17:08:10,090 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 58 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3114.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.29ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3487.22ms IncrementalHoareTripleChecker+Time [2021-08-30 17:08:10,090 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 120 Invalid, 822 Unknown, 0 Unchecked, 12.29ms Time], IncrementalHoareTripleChecker [2 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 3487.22ms Time] [2021-08-30 17:08:10,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-30 17:08:10,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-08-30 17:08:10,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 75 states have (on average 1.5333333333333334) internal successors, (115), 111 states have internal predecessors, (115), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-30 17:08:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 134 transitions. [2021-08-30 17:08:10,093 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 134 transitions. Word has length 60 [2021-08-30 17:08:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:08:10,094 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 134 transitions. [2021-08-30 17:08:10,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 12 states have internal predecessors, (45), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2021-08-30 17:08:10,094 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 134 transitions. [2021-08-30 17:08:10,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-30 17:08:10,094 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:08:10,095 INFO L513 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2021-08-30 17:08:10,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:10,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:08:10,317 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting l1_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-30 17:08:10,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:08:10,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1956658940, now seen corresponding path program 1 times [2021-08-30 17:08:10,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:08:10,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105405039] [2021-08-30 17:08:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:10,318 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:08:10,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:08:10,319 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:08:10,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-08-30 17:08:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:10,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-30 17:08:10,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:10,803 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-08-30 17:08:10,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-08-30 17:08:11,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2021-08-30 17:08:11,545 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-30 17:08:11,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-08-30 17:08:11,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:08:12,759 INFO L354 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2021-08-30 17:08:12,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 51 [2021-08-30 17:08:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-08-30 17:08:12,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:14,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:08:14,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105405039] [2021-08-30 17:08:14,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:08:14,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [557374636] [2021-08-30 17:08:14,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:14,310 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 17:08:14,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 17:08:14,329 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-30 17:08:14,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-08-30 17:08:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:15,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-30 17:08:15,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:15,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 17:08:15,288 INFO L354 Elim1Store]: treesize reduction 61, result has 32.2 percent of original size [2021-08-30 17:08:15,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 34 [2021-08-30 17:08:16,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-08-30 17:08:16,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-08-30 17:08:17,132 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 17:08:17,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2021-08-30 17:08:17,391 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 17:08:17,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-08-30 17:08:17,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-08-30 17:08:19,676 INFO L354 Elim1Store]: treesize reduction 74, result has 24.5 percent of original size [2021-08-30 17:08:19,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 65 [2021-08-30 17:08:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-08-30 17:08:20,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:27,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:08:27,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965416452] [2021-08-30 17:08:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:08:27,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:27,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:08:27,121 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:08:27,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-30 17:08:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:08:27,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-30 17:08:27,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:08:27,493 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-08-30 17:08:27,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-08-30 17:08:27,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2021-08-30 17:08:28,074 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-30 17:08:28,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-08-30 17:08:28,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:08:28,771 INFO L354 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2021-08-30 17:08:28,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 54 [2021-08-30 17:08:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-08-30 17:08:28,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:08:30,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:08:30,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:08:30,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:08:30,079 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-30 17:08:30,079 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:08:30,083 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION (45 of 46 remaining) [2021-08-30 17:08:30,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION (44 of 46 remaining) [2021-08-30 17:08:30,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION (43 of 46 remaining) [2021-08-30 17:08:30,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION (42 of 46 remaining) [2021-08-30 17:08:30,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION (41 of 46 remaining) [2021-08-30 17:08:30,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION (40 of 46 remaining) [2021-08-30 17:08:30,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION (39 of 46 remaining) [2021-08-30 17:08:30,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION (38 of 46 remaining) [2021-08-30 17:08:30,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION (37 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION (36 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION (35 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION (34 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr6REQUIRES_VIOLATION (33 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr7REQUIRES_VIOLATION (32 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr8REQUIRES_VIOLATION (31 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr9REQUIRES_VIOLATION (30 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION (29 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION (28 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (27 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (26 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (25 of 46 remaining) [2021-08-30 17:08:30,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (24 of 46 remaining) [2021-08-30 17:08:30,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (23 of 46 remaining) [2021-08-30 17:08:30,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (22 of 46 remaining) [2021-08-30 17:08:30,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (21 of 46 remaining) [2021-08-30 17:08:30,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (20 of 46 remaining) [2021-08-30 17:08:30,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (19 of 46 remaining) [2021-08-30 17:08:30,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (18 of 46 remaining) [2021-08-30 17:08:30,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE (17 of 46 remaining) [2021-08-30 17:08:30,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11ASSERT_VIOLATIONMEMORY_FREE (16 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ASSERT_VIOLATIONMEMORY_FREE (15 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (14 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (13 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (12 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (11 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ENSURES_VIOLATIONMEMORY_LEAK (10 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION (9 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION (8 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (7 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3ASSERT_VIOLATIONMEMORY_FREE (6 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE (5 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5REQUIRES_VIOLATION (4 of 46 remaining) [2021-08-30 17:08:30,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6REQUIRES_VIOLATION (3 of 46 remaining) [2021-08-30 17:08:30,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 46 remaining) [2021-08-30 17:08:30,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 46 remaining) [2021-08-30 17:08:30,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 46 remaining) [2021-08-30 17:08:30,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-08-30 17:08:30,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-08-30 17:08:30,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-08-30 17:08:30,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:08:30,693 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:08:30,698 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:08:30,698 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-30 17:08:30,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:08:30 BoogieIcfgContainer [2021-08-30 17:08:30,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:08:30,706 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:08:30,706 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:08:30,706 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:08:30,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:47" (3/4) ... [2021-08-30 17:08:30,709 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:08:30,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:08:30,710 INFO L158 Benchmark]: Toolchain (without parser) took 223879.51ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 36.0MB in the beginning and 40.3MB in the end (delta: -4.3MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2021-08-30 17:08:30,711 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 51.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:08:30,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.32ms. Allocated memory is still 58.7MB. Free memory was 35.8MB in the beginning and 32.3MB in the end (delta: 3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 17:08:30,712 INFO L158 Benchmark]: Boogie Preprocessor took 59.18ms. Allocated memory is still 58.7MB. Free memory was 32.1MB in the beginning and 28.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 17:08:30,712 INFO L158 Benchmark]: RCFGBuilder took 640.04ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 28.5MB in the beginning and 50.8MB in the end (delta: -22.3MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-08-30 17:08:30,713 INFO L158 Benchmark]: TraceAbstraction took 222790.09ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 50.2MB in the beginning and 40.3MB in the end (delta: 9.9MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2021-08-30 17:08:30,713 INFO L158 Benchmark]: Witness Printer took 3.19ms. Allocated memory is still 92.3MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:08:30,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 51.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.32ms. Allocated memory is still 58.7MB. Free memory was 35.8MB in the beginning and 32.3MB in the end (delta: 3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.18ms. Allocated memory is still 58.7MB. Free memory was 32.1MB in the beginning and 28.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 640.04ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 28.5MB in the beginning and 50.8MB in the end (delta: -22.3MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * TraceAbstraction took 222790.09ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 50.2MB in the beginning and 40.3MB in the end (delta: 9.9MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Witness Printer took 3.19ms. Allocated memory is still 92.3MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L687] static struct L1 *list; [L689] CALL l1_insert(&list) [L676] CALL, EXPR calloc_model(1U, sizeof *item) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L676] RET, EXPR calloc_model(1U, sizeof *item) [L676] struct L1 *item = calloc_model(1U, sizeof *item); [L677] COND FALSE !(!item) [L680] CALL l2_insert(&item->l2) [L655] CALL, EXPR calloc_model(1U, sizeof *item) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L655] RET, EXPR calloc_model(1U, sizeof *item) [L655] struct L2 *item = calloc_model(1U, sizeof *item); [L656] COND FALSE !(!item) [L658] item->proto = malloc(119U) [L659] EXPR item->proto [L659] COND FALSE !(!item->proto) [L661] EXPR \read(**list) [L661] item->next = *list [L662] *list = item [L680] RET l2_insert(&item->l2) [L681] COND FALSE !(__VERIFIER_nondet_int()) [L682] \read(**list) - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 145 locations, 46 error locations. Started 1 CEGAR loops. OverallTime: 222722.08ms, OverallIterations: 20, TraceHistogramMax: 16, EmptinessCheckTime: 40.80ms, AutomataDifference: 71641.05ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 15.87ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 286 SdHoareTripleChecker+Valid, 33524.24ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 268 mSDsluCounter, 1494 SdHoareTripleChecker+Invalid, 28747.30ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2475 IncrementalHoareTripleChecker+Unchecked, 10015 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11364 IncrementalHoareTripleChecker+Invalid, 13939 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 250 mSDtfsCounter, 11364 mSolverCounterSat, 117.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1650 GetRequests, 1395 SyntacticMatches, 25 SemanticMatches, 230 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 136092.28ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=15, InterpolantAutomatonStates: 148, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 122.42ms AutomataMinimizationTime, 19 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 288.98ms SsaConstructionTime, 1501.43ms SatisfiabilityAnalysisTime, 122829.20ms InterpolantComputationTime, 818 NumberOfCodeBlocks, 756 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1598 ConstructedInterpolants, 139 QuantifiedInterpolants, 6792 SizeOfPredicates, 66 NumberOfNonLiveVariables, 3974 ConjunctsInSsa, 192 ConjunctsInUnsatCore, 38 InterpolantComputations, 17 PerfectInterpolantSequences, 2219/2748 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:08:30,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...