./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0219.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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-0219.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 d0a821c00018fd0a7d1057c117e3e5b172a3096a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-0219.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 d0a821c00018fd0a7d1057c117e3e5b172a3096a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:23:22,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:23:22,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:23:23,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:23:23,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:23:23,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:23:23,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:23:23,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:23:23,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:23:23,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:23:23,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:23:23,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:23:23,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:23:23,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:23:23,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:23:23,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:23:23,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:23:23,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:23:23,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:23:23,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:23:23,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:23:23,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:23:23,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:23:23,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:23:23,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:23:23,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:23:23,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:23:23,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:23:23,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:23:23,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:23:23,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:23:23,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:23:23,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:23:23,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:23:23,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:23:23,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:23:23,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:23:23,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:23:23,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:23:23,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:23:23,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:23:23,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:23:23,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:23:23,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:23:23,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:23:23,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:23:23,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:23:23,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:23:23,105 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:23:23,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:23:23,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:23:23,106 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:23:23,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:23:23,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:23:23,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:23:23,107 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:23:23,107 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:23:23,108 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:23:23,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:23:23,108 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:23:23,108 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:23:23,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:23:23,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:23:23,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:23:23,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:23:23,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:23:23,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:23:23,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:23:23,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:23:23,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:23:23,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:23:23,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0a821c00018fd0a7d1057c117e3e5b172a3096a [2021-08-27 05:23:23,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:23:23,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:23:23,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:23:23,464 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:23:23,465 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:23:23,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0219.i [2021-08-27 05:23:23,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c144488e6/28999492212e4dc0b493c435ed9183db/FLAG53fd37f89 [2021-08-27 05:23:24,055 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:23:24,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0219.i [2021-08-27 05:23:24,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c144488e6/28999492212e4dc0b493c435ed9183db/FLAG53fd37f89 [2021-08-27 05:23:24,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c144488e6/28999492212e4dc0b493c435ed9183db [2021-08-27 05:23:24,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:23:24,359 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:23:24,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:23:24,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:23:24,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:23:24,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:23:24" (1/1) ... [2021-08-27 05:23:24,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c7b75bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:24, skipping insertion in model container [2021-08-27 05:23:24,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:23:24" (1/1) ... [2021-08-27 05:23:24,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:23:24,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:23:24,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:23:24,748 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:23:24,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:23:24,827 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:23:24,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:24 WrapperNode [2021-08-27 05:23:24,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:23:24,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:23:24,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:23:24,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:23:24,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:24" (1/1) ... [2021-08-27 05:23:24,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:24" (1/1) ... [2021-08-27 05:23:24,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:24" (1/1) ... [2021-08-27 05:23:24,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:24" (1/1) ... [2021-08-27 05:23:24,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:24" (1/1) ... [2021-08-27 05:23:24,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:24" (1/1) ... [2021-08-27 05:23:24,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:24" (1/1) ... [2021-08-27 05:23:24,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:23:24,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:23:24,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:23:24,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:23:24,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:24" (1/1) ... [2021-08-27 05:23:24,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:23:24,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:23:24,935 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) [2021-08-27 05:23:24,960 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 [2021-08-27 05:23:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:23:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:23:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:23:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:23:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:23:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:23:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:23:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:23:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-27 05:23:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-27 05:23:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-27 05:23:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-27 05:23:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:23:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 05:23:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:23:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:23:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:23:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:23:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:23:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:23:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:23:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:23:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:23:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:23:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:23:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:23:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:23:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:23:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:23:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:23:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:23:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:23:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:23:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:23:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:23:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:23:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:23:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:23:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:23:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:23:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:23:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:23:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:23:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:23:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:23:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:23:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:23:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:23:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:23:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:23:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:23:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:23:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:23:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:23:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:23:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:23:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:23:24,991 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:23:24,991 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:23:24,991 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:23:24,991 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:23:24,991 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:23:24,991 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:23:24,991 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:23:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:23:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:23:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:23:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:23:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:23:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:23:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:23:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:23:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:23:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:23:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:23:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:23:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:23:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:23:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:23:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:23:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:23:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:23:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:23:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:23:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:23:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:23:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:23:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:23:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:23:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:23:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:23:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:23:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:23:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:23:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:23:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:23:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:23:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:23:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:23:24,998 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:23:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:23:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:23:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:23:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:23:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:23:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:23:24,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:23:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:23:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:23:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:23:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:23:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:23:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:23:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:23:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:23:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:23:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:23:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:23:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:23:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:23:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:23:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:23:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:23:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:23:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:23:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:23:25,004 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 05:23:25,004 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 05:23:25,004 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 05:23:25,005 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 05:23:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 05:23:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 05:23:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 05:23:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 05:23:25,008 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 05:23:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 05:23:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 05:23:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 05:23:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 05:23:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 05:23:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 05:23:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 05:23:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 05:23:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 05:23:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 05:23:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 05:23:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 05:23:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 05:23:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 05:23:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 05:23:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 05:23:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 05:23:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 05:23:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 05:23:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 05:23:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 05:23:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 05:23:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 05:23:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 05:23:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 05:23:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 05:23:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 05:23:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 05:23:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 05:23:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-27 05:23:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-27 05:23:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 05:23:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 05:23:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-27 05:23:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-27 05:23:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-27 05:23:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 05:23:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 05:23:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 05:23:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 05:23:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 05:23:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 05:23:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-27 05:23:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:23:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 05:23:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:23:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-27 05:23:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:23:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:23:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-27 05:23:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:23:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-27 05:23:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:23:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:23:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 05:23:25,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 05:23:25,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:23:25,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 05:23:25,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 05:23:25,459 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 05:23:25,650 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:23:25,650 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 05:23:25,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:25 BoogieIcfgContainer [2021-08-27 05:23:25,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:23:25,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:23:25,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:23:25,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:23:25,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:23:24" (1/3) ... [2021-08-27 05:23:25,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7158772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:23:25, skipping insertion in model container [2021-08-27 05:23:25,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:24" (2/3) ... [2021-08-27 05:23:25,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7158772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:23:25, skipping insertion in model container [2021-08-27 05:23:25,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:25" (3/3) ... [2021-08-27 05:23:25,661 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0219.i [2021-08-27 05:23:25,665 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:23:25,666 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-08-27 05:23:25,709 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:23:25,716 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 [2021-08-27 05:23:25,716 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-08-27 05:23:25,732 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) [2021-08-27 05:23:25,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:23:25,739 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:25,739 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:25,740 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:25,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:25,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1812237907, now seen corresponding path program 1 times [2021-08-27 05:23:25,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:25,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969373173] [2021-08-27 05:23:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:25,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:25,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:23:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:25,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:25,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969373173] [2021-08-27 05:23:25,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969373173] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:25,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:25,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:23:25,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971711862] [2021-08-27 05:23:25,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:23:25,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:23:25,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:23:25,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:23:25,934 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) [2021-08-27 05:23:26,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:26,123 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2021-08-27 05:23:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:23:26,124 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 [2021-08-27 05:23:26,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:26,132 INFO L225 Difference]: With dead ends: 137 [2021-08-27 05:23:26,132 INFO L226 Difference]: Without dead ends: 134 [2021-08-27 05:23:26,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:23:26,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-08-27 05:23:26,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2021-08-27 05:23:26,172 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) [2021-08-27 05:23:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2021-08-27 05:23:26,175 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 7 [2021-08-27 05:23:26,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:26,176 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2021-08-27 05:23:26,176 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) [2021-08-27 05:23:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2021-08-27 05:23:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 05:23:26,177 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:26,177 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:26,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 05:23:26,178 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:26,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:26,178 INFO L82 PathProgramCache]: Analyzing trace with hash 723613811, now seen corresponding path program 1 times [2021-08-27 05:23:26,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:26,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825086681] [2021-08-27 05:23:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:26,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:26,198 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:23:26,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354603219] [2021-08-27 05:23:26,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:26,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:23:26,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:23:26,213 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) [2021-08-27 05:23:26,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 05:23:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:26,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:23:26,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:26,484 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 [2021-08-27 05:23:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:26,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:26,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825086681] [2021-08-27 05:23:26,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:23:26,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354603219] [2021-08-27 05:23:26,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354603219] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:26,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:26,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 05:23:26,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540842503] [2021-08-27 05:23:26,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:23:26,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:23:26,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:23:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:23:26,495 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) [2021-08-27 05:23:26,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:26,579 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2021-08-27 05:23:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:23:26,580 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 [2021-08-27 05:23:26,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:26,583 INFO L225 Difference]: With dead ends: 119 [2021-08-27 05:23:26,583 INFO L226 Difference]: Without dead ends: 119 [2021-08-27 05:23:26,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:23:26,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-27 05:23:26,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-08-27 05:23:26,590 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) [2021-08-27 05:23:26,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2021-08-27 05:23:26,592 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 10 [2021-08-27 05:23:26,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:26,592 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2021-08-27 05:23:26,593 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) [2021-08-27 05:23:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2021-08-27 05:23:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 05:23:26,593 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:26,593 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:26,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:26,818 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 [2021-08-27 05:23:26,819 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:26,819 INFO L82 PathProgramCache]: Analyzing trace with hash 723613812, now seen corresponding path program 1 times [2021-08-27 05:23:26,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:26,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172399828] [2021-08-27 05:23:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:26,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:26,831 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:23:26,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782887673] [2021-08-27 05:23:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:26,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:23:26,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:23:26,833 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) [2021-08-27 05:23:26,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 05:23:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:27,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 05:23:27,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:27,163 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 [2021-08-27 05:23:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:27,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:27,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172399828] [2021-08-27 05:23:27,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:23:27,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782887673] [2021-08-27 05:23:27,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782887673] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:27,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:27,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:23:27,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800011031] [2021-08-27 05:23:27,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:23:27,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:23:27,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:23:27,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:23:27,190 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) [2021-08-27 05:23:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:27,275 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2021-08-27 05:23:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:23:27,275 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 [2021-08-27 05:23:27,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:27,276 INFO L225 Difference]: With dead ends: 118 [2021-08-27 05:23:27,276 INFO L226 Difference]: Without dead ends: 118 [2021-08-27 05:23:27,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:23:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-27 05:23:27,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-27 05:23:27,282 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) [2021-08-27 05:23:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-27 05:23:27,283 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 10 [2021-08-27 05:23:27,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:27,283 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-27 05:23:27,284 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) [2021-08-27 05:23:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-27 05:23:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-27 05:23:27,285 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:27,285 INFO L512 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] [2021-08-27 05:23:27,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:27,500 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 [2021-08-27 05:23:27,501 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:27,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:27,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1381204090, now seen corresponding path program 1 times [2021-08-27 05:23:27,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:27,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198815945] [2021-08-27 05:23:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:27,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:27,518 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:23:27,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400292972] [2021-08-27 05:23:27,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:27,519 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:23:27,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:23:27,521 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) [2021-08-27 05:23:27,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 05:23:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:27,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 05:23:27,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:27,943 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:23:27,944 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 [2021-08-27 05:23:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 05:23:27,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:27,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198815945] [2021-08-27 05:23:27,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:23:27,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400292972] [2021-08-27 05:23:27,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400292972] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:27,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:27,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 05:23:27,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066271723] [2021-08-27 05:23:27,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 05:23:27,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:23:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 05:23:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:23:27,981 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) [2021-08-27 05:23:28,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:28,197 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2021-08-27 05:23:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:23:28,198 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 [2021-08-27 05:23:28,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:28,198 INFO L225 Difference]: With dead ends: 115 [2021-08-27 05:23:28,199 INFO L226 Difference]: Without dead ends: 115 [2021-08-27 05:23:28,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:23:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-27 05:23:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-08-27 05:23:28,203 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) [2021-08-27 05:23:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-08-27 05:23:28,204 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 37 [2021-08-27 05:23:28,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:28,204 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-08-27 05:23:28,204 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) [2021-08-27 05:23:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-08-27 05:23:28,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-27 05:23:28,205 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:28,205 INFO L512 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] [2021-08-27 05:23:28,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:28,416 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 [2021-08-27 05:23:28,417 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:28,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1381204089, now seen corresponding path program 1 times [2021-08-27 05:23:28,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:23:28,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489770976] [2021-08-27 05:23:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:28,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:23:28,438 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:23:28,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12873584] [2021-08-27 05:23:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:28,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:23:28,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:23:28,439 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) [2021-08-27 05:23:28,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 05:23:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:28,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-27 05:23:28,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:28,832 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 [2021-08-27 05:23:30,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:23:30,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489770976] [2021-08-27 05:23:30,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:23:30,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12873584] [2021-08-27 05:23:30,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:23:30,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:30,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 05:23:30,028 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-08-27 05:23:30,028 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 05:23:30,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION [2021-08-27 05:23:30,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION [2021-08-27 05:23:30,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION [2021-08-27 05:23:30,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION [2021-08-27 05:23:30,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION [2021-08-27 05:23:30,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION [2021-08-27 05:23:30,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION [2021-08-27 05:23:30,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION [2021-08-27 05:23:30,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION [2021-08-27 05:23:30,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION [2021-08-27 05:23:30,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION [2021-08-27 05:23:30,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION [2021-08-27 05:23:30,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr6REQUIRES_VIOLATION [2021-08-27 05:23:30,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr7REQUIRES_VIOLATION [2021-08-27 05:23:30,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr8REQUIRES_VIOLATION [2021-08-27 05:23:30,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr9REQUIRES_VIOLATION [2021-08-27 05:23:30,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION [2021-08-27 05:23:30,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION [2021-08-27 05:23:30,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:23:30,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:23:30,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:23:30,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:23:30,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:23:30,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:23:30,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 05:23:30,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 05:23:30,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 05:23:30,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 05:23:30,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:30,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:30,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:30,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 05:23:30,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 05:23:30,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 05:23:30,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 05:23:30,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:23:30,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:23:30,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:23:30,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:23:30,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:23:30,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:30,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:30,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:30,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:30,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:30,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:30,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:30,265 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 [2021-08-27 05:23:30,270 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:23:30,274 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:23:30,275 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:23:30,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:23:30 BoogieIcfgContainer [2021-08-27 05:23:30,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:23:30,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:23:30,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:23:30,282 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:23:30,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:25" (3/4) ... [2021-08-27 05:23:30,285 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:23:30,285 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:23:30,286 INFO L168 Benchmark]: Toolchain (without parser) took 5927.36 ms. Allocated memory was 48.2 MB in the beginning and 127.9 MB in the end (delta: 79.7 MB). Free memory was 22.6 MB in the beginning and 91.0 MB in the end (delta: -68.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:30,287 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 48.2 MB. Free memory was 30.7 MB in the beginning and 30.7 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:23:30,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.41 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.5 MB in the beginning and 32.1 MB in the end (delta: -9.7 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:30,287 INFO L168 Benchmark]: Boogie Preprocessor took 71.15 ms. Allocated memory is still 58.7 MB. Free memory was 32.1 MB in the beginning and 28.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:30,288 INFO L168 Benchmark]: RCFGBuilder took 752.34 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 28.7 MB in the beginning and 45.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:30,288 INFO L168 Benchmark]: TraceAbstraction took 4625.86 ms. Allocated memory was 71.3 MB in the beginning and 127.9 MB in the end (delta: 56.6 MB). Free memory was 45.4 MB in the beginning and 91.9 MB in the end (delta: -46.5 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:30,289 INFO L168 Benchmark]: Witness Printer took 3.54 ms. Allocated memory is still 127.9 MB. Free memory was 91.9 MB in the beginning and 91.0 MB in the end (delta: 863.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:23:30,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 48.2 MB. Free memory was 30.7 MB in the beginning and 30.7 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 468.41 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.5 MB in the beginning and 32.1 MB in the end (delta: -9.7 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.15 ms. Allocated memory is still 58.7 MB. Free memory was 32.1 MB in the beginning and 28.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 752.34 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 28.7 MB in the beginning and 45.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4625.86 ms. Allocated memory was 71.3 MB in the beginning and 127.9 MB in the end (delta: 56.6 MB). Free memory was 45.4 MB in the beginning and 91.9 MB in the end (delta: -46.5 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.54 ms. Allocated memory is still 127.9 MB. Free memory was 91.9 MB in the beginning and 91.0 MB in the end (delta: 863.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 667]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 667]: 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: 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 free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: 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. - 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: 4561.6ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 12.7ms, AutomataDifference: 607.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 461 SDtfs, 63 SDslu, 588 SDs, 0 SdLazy, 485 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 359.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 93.5ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 43.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.4ms SsaConstructionTime, 90.1ms SatisfiabilityAnalysisTime, 539.4ms 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 [2021-08-27 05:23:30,316 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:23:32,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:23:32,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:23:32,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:23:32,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:23:32,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:23:32,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:23:32,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:23:32,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:23:32,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:23:32,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:23:32,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:23:32,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:23:32,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:23:32,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:23:32,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:23:32,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:23:32,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:23:32,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:23:32,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:23:32,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:23:32,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:23:32,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:23:32,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:23:32,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:23:32,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:23:32,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:23:32,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:23:32,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:23:32,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:23:32,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:23:32,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:23:32,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:23:32,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:23:32,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:23:32,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:23:32,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:23:32,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:23:32,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:23:32,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:23:32,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:23:32,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 05:23:32,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:23:32,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:23:32,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:23:32,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:23:32,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:23:32,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:23:32,229 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:23:32,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:23:32,230 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:23:32,230 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:23:32,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:23:32,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:23:32,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:23:32,231 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:23:32,231 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:23:32,232 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:23:32,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:23:32,232 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:23:32,232 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 05:23:32,232 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 05:23:32,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:23:32,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:23:32,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:23:32,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:23:32,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:23:32,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:23:32,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:23:32,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:23:32,234 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 05:23:32,234 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 05:23:32,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:23:32,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 05:23:32,235 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0a821c00018fd0a7d1057c117e3e5b172a3096a [2021-08-27 05:23:32,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:23:32,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:23:32,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:23:32,576 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:23:32,577 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:23:32,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0219.i [2021-08-27 05:23:32,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a06a20085/5f578caeba9740cc952a4790b7c745f8/FLAGbfa0482a5 [2021-08-27 05:23:33,158 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:23:33,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0219.i [2021-08-27 05:23:33,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a06a20085/5f578caeba9740cc952a4790b7c745f8/FLAGbfa0482a5 [2021-08-27 05:23:33,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a06a20085/5f578caeba9740cc952a4790b7c745f8 [2021-08-27 05:23:33,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:23:33,662 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:23:33,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:23:33,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:23:33,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:23:33,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:23:33" (1/1) ... [2021-08-27 05:23:33,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1743384b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:33, skipping insertion in model container [2021-08-27 05:23:33,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:23:33" (1/1) ... [2021-08-27 05:23:33,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:23:33,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:23:34,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:23:34,017 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:23:34,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:23:34,079 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:23:34,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:34 WrapperNode [2021-08-27 05:23:34,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:23:34,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:23:34,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:23:34,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:23:34,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:34" (1/1) ... [2021-08-27 05:23:34,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:34" (1/1) ... [2021-08-27 05:23:34,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:34" (1/1) ... [2021-08-27 05:23:34,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:34" (1/1) ... [2021-08-27 05:23:34,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:34" (1/1) ... [2021-08-27 05:23:34,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:34" (1/1) ... [2021-08-27 05:23:34,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:34" (1/1) ... [2021-08-27 05:23:34,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:23:34,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:23:34,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:23:34,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:23:34,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:34" (1/1) ... [2021-08-27 05:23:34,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:23:34,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:23:34,214 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) [2021-08-27 05:23:34,217 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 [2021-08-27 05:23:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:23:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:23:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:23:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:23:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:23:34,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:23:34,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:23:34,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:23:34,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:23:34,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-27 05:23:34,246 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-27 05:23:34,247 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-27 05:23:34,247 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-27 05:23:34,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:23:34,247 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 05:23:34,247 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:23:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:23:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:23:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:23:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:23:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:23:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:23:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:23:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:23:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:23:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:23:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:23:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:23:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:23:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:23:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:23:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:23:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:23:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:23:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:23:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:23:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:23:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:23:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:23:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:23:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:23:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:23:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:23:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:23:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:23:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:23:34,253 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:23:34,253 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:23:34,253 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:23:34,253 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:23:34,253 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:23:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:23:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:23:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:23:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:23:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:23:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:23:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:23:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:23:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:23:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:23:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:23:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:23:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:23:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:23:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:23:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:23:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:23:34,256 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:23:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:23:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:23:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:23:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:23:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:23:34,257 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:23:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:23:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:23:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:23:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:23:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:23:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:23:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:23:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:23:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:23:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:23:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:23:34,259 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:23:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:23:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:23:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:23:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:23:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:23:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:23:34,261 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:23:34,261 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:23:34,261 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:23:34,261 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:23:34,261 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:23:34,261 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:23:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:23:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:23:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:23:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:23:34,262 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:23:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:23:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:23:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:23:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:23:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:23:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:23:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:23:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:23:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:23:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:23:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:23:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:23:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:23:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:23:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:23:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:23:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:23:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:23:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:23:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:23:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:23:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:23:34,266 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:23:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 05:23:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 05:23:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 05:23:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 05:23:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 05:23:34,267 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 05:23:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 05:23:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 05:23:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 05:23:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 05:23:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 05:23:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 05:23:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 05:23:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 05:23:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 05:23:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 05:23:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 05:23:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 05:23:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 05:23:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 05:23:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 05:23:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 05:23:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 05:23:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 05:23:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 05:23:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 05:23:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 05:23:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 05:23:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 05:23:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 05:23:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 05:23:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 05:23:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 05:23:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 05:23:34,272 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 05:23:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 05:23:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 05:23:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 05:23:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-27 05:23:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-27 05:23:34,273 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 05:23:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 05:23:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-27 05:23:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-27 05:23:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-27 05:23:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 05:23:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 05:23:34,274 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 05:23:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 05:23:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 05:23:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 05:23:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-27 05:23:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:23:34,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 05:23:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:23:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-27 05:23:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:23:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:23:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-27 05:23:34,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:23:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-27 05:23:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:23:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:23:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 05:23:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 05:23:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:23:34,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:23:34,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 05:23:34,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 05:23:34,727 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 05:23:35,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:23:35,106 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 05:23:35,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:35 BoogieIcfgContainer [2021-08-27 05:23:35,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:23:35,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:23:35,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:23:35,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:23:35,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:23:33" (1/3) ... [2021-08-27 05:23:35,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112caf08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:23:35, skipping insertion in model container [2021-08-27 05:23:35,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:23:34" (2/3) ... [2021-08-27 05:23:35,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112caf08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:23:35, skipping insertion in model container [2021-08-27 05:23:35,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:35" (3/3) ... [2021-08-27 05:23:35,120 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0219.i [2021-08-27 05:23:35,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:23:35,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-08-27 05:23:35,175 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:23:35,181 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 [2021-08-27 05:23:35,181 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-08-27 05:23:35,195 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) [2021-08-27 05:23:35,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:23:35,202 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:35,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:35,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:35,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:35,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1291303161, now seen corresponding path program 1 times [2021-08-27 05:23:35,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:35,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145698585] [2021-08-27 05:23:35,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:35,219 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:35,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:35,221 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) [2021-08-27 05:23:35,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 05:23:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:35,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-27 05:23:35,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:35,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:35,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:35,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145698585] [2021-08-27 05:23:35,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145698585] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:35,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:35,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:23:35,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948696166] [2021-08-27 05:23:35,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-27 05:23:35,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:35,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 05:23:35,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 05:23:35,661 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) [2021-08-27 05:23:35,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:35,680 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-08-27 05:23:35,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 05:23:35,681 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 [2021-08-27 05:23:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:35,688 INFO L225 Difference]: With dead ends: 121 [2021-08-27 05:23:35,688 INFO L226 Difference]: Without dead ends: 118 [2021-08-27 05:23:35,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 05:23:35,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-27 05:23:35,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-27 05:23:35,730 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) [2021-08-27 05:23:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-27 05:23:35,734 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 7 [2021-08-27 05:23:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:35,734 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-27 05:23:35,734 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) [2021-08-27 05:23:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-27 05:23:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 05:23:35,735 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:35,735 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:35,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:35,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:35,950 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:35,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:35,952 INFO L82 PathProgramCache]: Analyzing trace with hash 892717489, now seen corresponding path program 1 times [2021-08-27 05:23:35,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:35,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768167778] [2021-08-27 05:23:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:35,953 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:35,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:35,954 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) [2021-08-27 05:23:35,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 05:23:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:36,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:23:36,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:36,247 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 [2021-08-27 05:23:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:36,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:36,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:36,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768167778] [2021-08-27 05:23:36,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768167778] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:36,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:36,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:23:36,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828221050] [2021-08-27 05:23:36,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:23:36,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:36,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:23:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:23:36,319 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) [2021-08-27 05:23:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:36,516 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2021-08-27 05:23:36,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:23:36,517 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 [2021-08-27 05:23:36,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:36,519 INFO L225 Difference]: With dead ends: 117 [2021-08-27 05:23:36,519 INFO L226 Difference]: Without dead ends: 117 [2021-08-27 05:23:36,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:23:36,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-27 05:23:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-27 05:23:36,534 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) [2021-08-27 05:23:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-27 05:23:36,540 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 10 [2021-08-27 05:23:36,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:36,541 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-27 05:23:36,541 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) [2021-08-27 05:23:36,541 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-27 05:23:36,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 05:23:36,541 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:36,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:36,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:36,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:36,752 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:36,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:36,753 INFO L82 PathProgramCache]: Analyzing trace with hash 892717490, now seen corresponding path program 1 times [2021-08-27 05:23:36,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:36,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719313722] [2021-08-27 05:23:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:36,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:36,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:36,755 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) [2021-08-27 05:23:36,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 05:23:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:36,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 05:23:36,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:37,049 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 [2021-08-27 05:23:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:37,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:37,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:37,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719313722] [2021-08-27 05:23:37,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719313722] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:37,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:37,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 4 [2021-08-27 05:23:37,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237313068] [2021-08-27 05:23:37,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:23:37,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:37,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:23:37,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:23:37,388 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) [2021-08-27 05:23:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:38,322 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2021-08-27 05:23:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:23:38,325 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 [2021-08-27 05:23:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:38,326 INFO L225 Difference]: With dead ends: 116 [2021-08-27 05:23:38,326 INFO L226 Difference]: Without dead ends: 116 [2021-08-27 05:23:38,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 226.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:23:38,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-27 05:23:38,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-27 05:23:38,337 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) [2021-08-27 05:23:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-27 05:23:38,340 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 10 [2021-08-27 05:23:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:38,341 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-27 05:23:38,341 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) [2021-08-27 05:23:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-27 05:23:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-27 05:23:38,342 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:38,342 INFO L512 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] [2021-08-27 05:23:38,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:38,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:38,543 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:38,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:38,543 INFO L82 PathProgramCache]: Analyzing trace with hash 71295803, now seen corresponding path program 1 times [2021-08-27 05:23:38,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:38,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796087709] [2021-08-27 05:23:38,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:38,545 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:38,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:38,546 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) [2021-08-27 05:23:38,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 05:23:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:38,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 05:23:38,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:39,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 05:23:40,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:40,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796087709] [2021-08-27 05:23:40,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796087709] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-27 05:23:40,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:23:40,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-08-27 05:23:40,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464011561] [2021-08-27 05:23:40,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:23:40,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:40,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:23:40,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:23:40,159 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) [2021-08-27 05:23:40,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:40,378 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-08-27 05:23:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 05:23:40,380 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 [2021-08-27 05:23:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:40,381 INFO L225 Difference]: With dead ends: 122 [2021-08-27 05:23:40,381 INFO L226 Difference]: Without dead ends: 117 [2021-08-27 05:23:40,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 524.8ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-27 05:23:40,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-27 05:23:40,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-27 05:23:40,387 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) [2021-08-27 05:23:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-27 05:23:40,389 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 37 [2021-08-27 05:23:40,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:40,389 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-27 05:23:40,389 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) [2021-08-27 05:23:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-27 05:23:40,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-27 05:23:40,390 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:40,390 INFO L512 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] [2021-08-27 05:23:40,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:40,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:40,593 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:40,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:40,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1772361669, now seen corresponding path program 1 times [2021-08-27 05:23:40,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:40,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369702560] [2021-08-27 05:23:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:40,594 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:40,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:40,595 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) [2021-08-27 05:23:40,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 05:23:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:40,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 05:23:40,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 05:23:41,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 05:23:42,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:42,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369702560] [2021-08-27 05:23:42,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369702560] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:23:42,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:23:42,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-08-27 05:23:42,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605411164] [2021-08-27 05:23:42,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 05:23:42,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 05:23:42,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-08-27 05:23:42,091 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) [2021-08-27 05:23:42,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:42,362 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-08-27 05:23:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:23:42,363 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 [2021-08-27 05:23:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:42,364 INFO L225 Difference]: With dead ends: 123 [2021-08-27 05:23:42,364 INFO L226 Difference]: Without dead ends: 118 [2021-08-27 05:23:42,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 589.8ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-27 05:23:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-27 05:23:42,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-27 05:23:42,370 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) [2021-08-27 05:23:42,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-27 05:23:42,372 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 39 [2021-08-27 05:23:42,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:42,372 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-27 05:23:42,372 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) [2021-08-27 05:23:42,372 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-27 05:23:42,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-27 05:23:42,373 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:42,373 INFO L512 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] [2021-08-27 05:23:42,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-08-27 05:23:42,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:42,577 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l2_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:42,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1896960251, now seen corresponding path program 2 times [2021-08-27 05:23:42,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:42,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881161188] [2021-08-27 05:23:42,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:23:42,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:42,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:42,579 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) [2021-08-27 05:23:42,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 05:23:42,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 05:23:42,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:23:42,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 05:23:42,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:42,909 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 [2021-08-27 05:23:43,073 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 05:23:43,075 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 [2021-08-27 05:23:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 05:23:43,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-08-27 05:23:43,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:43,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881161188] [2021-08-27 05:23:43,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881161188] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:43,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:43,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2021-08-27 05:23:43,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350609377] [2021-08-27 05:23:43,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:23:43,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:23:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:23:43,305 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) [2021-08-27 05:23:43,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:43,746 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2021-08-27 05:23:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:23:43,746 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 [2021-08-27 05:23:43,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:43,747 INFO L225 Difference]: With dead ends: 118 [2021-08-27 05:23:43,747 INFO L226 Difference]: Without dead ends: 118 [2021-08-27 05:23:43,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 87.6ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:23:43,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-27 05:23:43,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2021-08-27 05:23:43,752 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) [2021-08-27 05:23:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-08-27 05:23:43,759 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 41 [2021-08-27 05:23:43,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:43,763 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-08-27 05:23:43,763 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) [2021-08-27 05:23:43,763 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-08-27 05:23:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-27 05:23:43,765 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:43,765 INFO L512 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] [2021-08-27 05:23:43,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:43,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:43,975 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:43,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1896960252, now seen corresponding path program 1 times [2021-08-27 05:23:43,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:43,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234837394] [2021-08-27 05:23:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:43,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:43,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:43,978 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) [2021-08-27 05:23:43,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 05:23:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:44,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 05:23:44,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:44,598 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 05:23:44,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-27 05:23:45,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:45,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234837394] [2021-08-27 05:23:45,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234837394] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:23:45,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:23:45,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-27 05:23:45,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600028752] [2021-08-27 05:23:45,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 05:23:45,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:45,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 05:23:45,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-08-27 05:23:45,618 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) [2021-08-27 05:23:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:46,006 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-08-27 05:23:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:23:46,007 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 [2021-08-27 05:23:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:46,008 INFO L225 Difference]: With dead ends: 121 [2021-08-27 05:23:46,008 INFO L226 Difference]: Without dead ends: 116 [2021-08-27 05:23:46,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 742.9ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-27 05:23:46,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-27 05:23:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-27 05:23:46,013 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) [2021-08-27 05:23:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-27 05:23:46,013 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 41 [2021-08-27 05:23:46,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:46,014 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-27 05:23:46,014 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) [2021-08-27 05:23:46,014 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-27 05:23:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-27 05:23:46,015 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:46,015 INFO L512 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] [2021-08-27 05:23:46,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:46,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:46,230 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:46,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:46,231 INFO L82 PathProgramCache]: Analyzing trace with hash 810613510, now seen corresponding path program 2 times [2021-08-27 05:23:46,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:46,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15758826] [2021-08-27 05:23:46,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:23:46,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:46,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:46,234 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) [2021-08-27 05:23:46,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-27 05:23:46,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:23:46,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:23:46,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 05:23:46,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-27 05:23:47,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-08-27 05:23:48,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:48,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15758826] [2021-08-27 05:23:48,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15758826] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:23:48,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:23:48,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-27 05:23:48,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487104657] [2021-08-27 05:23:48,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 05:23:48,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:48,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 05:23:48,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-08-27 05:23:48,243 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) [2021-08-27 05:23:48,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:48,748 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-08-27 05:23:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 05:23:48,757 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 [2021-08-27 05:23:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:48,758 INFO L225 Difference]: With dead ends: 122 [2021-08-27 05:23:48,758 INFO L226 Difference]: Without dead ends: 117 [2021-08-27 05:23:48,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 827.6ms TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-08-27 05:23:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-27 05:23:48,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-27 05:23:48,762 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) [2021-08-27 05:23:48,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-27 05:23:48,763 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 43 [2021-08-27 05:23:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:48,763 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-27 05:23:48,764 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) [2021-08-27 05:23:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-27 05:23:48,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-27 05:23:48,765 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:48,765 INFO L512 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] [2021-08-27 05:23:48,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:48,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:48,977 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting l2_insertErr1REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:23:48,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:48,977 INFO L82 PathProgramCache]: Analyzing trace with hash 126824124, now seen corresponding path program 3 times [2021-08-27 05:23:48,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:48,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821366858] [2021-08-27 05:23:48,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 05:23:48,978 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:48,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:48,979 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) [2021-08-27 05:23:48,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-27 05:23:49,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 05:23:49,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:23:49,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 05:23:49,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:49,455 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 [2021-08-27 05:23:49,489 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 [2021-08-27 05:23:50,756 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:23:50,757 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 [2021-08-27 05:23:50,763 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 05:23:50,763 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 [2021-08-27 05:23:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-27 05:23:50,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-08-27 05:23:58,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:58,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821366858] [2021-08-27 05:23:58,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821366858] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:58,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:58,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2021-08-27 05:23:58,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598342091] [2021-08-27 05:23:58,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 05:23:58,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:58,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 05:23:58,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=120, Unknown=2, NotChecked=0, Total=156 [2021-08-27 05:23:58,652 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) [2021-08-27 05:24:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:05,902 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2021-08-27 05:24:05,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:24:05,905 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 [2021-08-27 05:24:05,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:05,906 INFO L225 Difference]: With dead ends: 117 [2021-08-27 05:24:05,906 INFO L226 Difference]: Without dead ends: 117 [2021-08-27 05:24:05,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 7582.4ms TimeCoverageRelationStatistics Valid=48, Invalid=160, Unknown=2, NotChecked=0, Total=210 [2021-08-27 05:24:05,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-27 05:24:05,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2021-08-27 05:24:05,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 62 states have (on average 1.6774193548387097) internal successors, (104), 100 states have internal predecessors, (104), 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) [2021-08-27 05:24:05,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 119 transitions. [2021-08-27 05:24:05,910 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 119 transitions. Word has length 45 [2021-08-27 05:24:05,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:05,911 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 119 transitions. [2021-08-27 05:24:05,911 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) [2021-08-27 05:24:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 119 transitions. [2021-08-27 05:24:05,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-27 05:24:05,912 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:05,912 INFO L512 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, 1, 1] [2021-08-27 05:24:05,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-27 05:24:06,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:24:06,123 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting l2_insertErr4REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:24:06,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:06,124 INFO L82 PathProgramCache]: Analyzing trace with hash 984552638, now seen corresponding path program 1 times [2021-08-27 05:24:06,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:06,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609892566] [2021-08-27 05:24:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:06,125 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:06,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:06,125 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) [2021-08-27 05:24:06,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-27 05:24:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:06,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 05:24:06,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-27 05:24:06,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-27 05:24:08,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:08,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609892566] [2021-08-27 05:24:08,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609892566] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:24:08,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:24:08,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-08-27 05:24:08,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487136707] [2021-08-27 05:24:08,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 05:24:08,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:08,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 05:24:08,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-08-27 05:24:08,474 INFO L87 Difference]: Start difference. First operand 114 states and 119 transitions. Second operand has 17 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 17 states have internal predecessors, (49), 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) [2021-08-27 05:24:09,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:09,163 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2021-08-27 05:24:09,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 05:24:09,165 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 17 states have internal predecessors, (49), 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 49 [2021-08-27 05:24:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:09,165 INFO L225 Difference]: With dead ends: 120 [2021-08-27 05:24:09,165 INFO L226 Difference]: Without dead ends: 115 [2021-08-27 05:24:09,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1331.7ms TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-08-27 05:24:09,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-27 05:24:09,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-08-27 05:24:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 63 states have (on average 1.6666666666666667) 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) [2021-08-27 05:24:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-08-27 05:24:09,169 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 49 [2021-08-27 05:24:09,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:09,169 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-08-27 05:24:09,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 17 states have internal predecessors, (49), 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) [2021-08-27 05:24:09,170 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-08-27 05:24:09,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-27 05:24:09,170 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:09,171 INFO L512 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] [2021-08-27 05:24:09,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-27 05:24:09,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:24:09,382 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting l2_insertErr4REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:24:09,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:09,383 INFO L82 PathProgramCache]: Analyzing trace with hash -542376120, now seen corresponding path program 2 times [2021-08-27 05:24:09,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:09,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676838978] [2021-08-27 05:24:09,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:24:09,384 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:09,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:09,385 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) [2021-08-27 05:24:09,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-27 05:24:09,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:24:09,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:24:09,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 05:24:09,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 05:24:10,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-08-27 05:24:12,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:12,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676838978] [2021-08-27 05:24:12,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676838978] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:24:12,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:24:12,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-27 05:24:12,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534913163] [2021-08-27 05:24:12,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-27 05:24:12,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:12,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-27 05:24:12,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-08-27 05:24:12,155 INFO L87 Difference]: Start difference. First operand 115 states and 120 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) [2021-08-27 05:24:13,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:13,004 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-08-27 05:24:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 05:24:13,004 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 [2021-08-27 05:24:13,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:13,005 INFO L225 Difference]: With dead ends: 121 [2021-08-27 05:24:13,005 INFO L226 Difference]: Without dead ends: 116 [2021-08-27 05:24:13,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1407.4ms TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-08-27 05:24:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-27 05:24:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-27 05:24:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 64 states have (on average 1.65625) 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) [2021-08-27 05:24:13,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-27 05:24:13,009 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 51 [2021-08-27 05:24:13,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:13,009 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-27 05:24:13,009 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) [2021-08-27 05:24:13,009 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-27 05:24:13,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-27 05:24:13,010 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:13,010 INFO L512 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] [2021-08-27 05:24:13,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-27 05:24:13,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:24:13,210 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting l2_insertErr4REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:24:13,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:13,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1454408318, now seen corresponding path program 3 times [2021-08-27 05:24:13,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:13,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241272761] [2021-08-27 05:24:13,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 05:24:13,211 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:13,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:13,213 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) [2021-08-27 05:24:13,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-27 05:24:13,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 05:24:13,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:24:13,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 05:24:13,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:13,741 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 [2021-08-27 05:24:13,966 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 [2021-08-27 05:24:14,154 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 05:24:14,154 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 [2021-08-27 05:24:14,307 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-08-27 05:24:14,307 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 46 treesize of output 57 [2021-08-27 05:24:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-08-27 05:24:14,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:25:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-08-27 05:25:00,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:25:00,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241272761] [2021-08-27 05:25:00,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241272761] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:25:00,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:25:00,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-08-27 05:25:00,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78110457] [2021-08-27 05:25:00,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-27 05:25:00,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:25:00,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-27 05:25:00,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=304, Unknown=13, NotChecked=0, Total=380 [2021-08-27 05:25:00,502 INFO L87 Difference]: Start difference. First operand 116 states and 121 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) [2021-08-27 05:26:57,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:26:57,498 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-08-27 05:26:57,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 05:26:57,530 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 53 [2021-08-27 05:26:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:26:57,532 INFO L225 Difference]: With dead ends: 142 [2021-08-27 05:26:57,532 INFO L226 Difference]: Without dead ends: 142 [2021-08-27 05:26:57,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 82 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 58997.1ms TimeCoverageRelationStatistics Valid=165, Invalid=745, Unknown=20, NotChecked=0, Total=930 [2021-08-27 05:26:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-08-27 05:26:57,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 113. [2021-08-27 05:26:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 64 states have (on average 1.609375) internal successors, (103), 99 states have internal predecessors, (103), 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) [2021-08-27 05:26:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 118 transitions. [2021-08-27 05:26:57,538 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 118 transitions. Word has length 53 [2021-08-27 05:26:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:26:57,539 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 118 transitions. [2021-08-27 05:26:57,539 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) [2021-08-27 05:26:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 118 transitions. [2021-08-27 05:26:57,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-27 05:26:57,540 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:26:57,540 INFO L512 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] [2021-08-27 05:26:57,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-27 05:26:57,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:26:57,741 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting l2_insertErr5REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:26:57,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:26:57,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1454408319, now seen corresponding path program 1 times [2021-08-27 05:26:57,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:26:57,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358457262] [2021-08-27 05:26:57,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:26:57,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:26:57,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:26:57,743 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) [2021-08-27 05:26:57,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-27 05:26:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:26:58,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 05:26:58,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:26:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 58 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-27 05:26:59,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:27:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-08-27 05:27:02,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:27:02,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358457262] [2021-08-27 05:27:02,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358457262] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:27:02,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:27:02,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-27 05:27:02,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891224985] [2021-08-27 05:27:02,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-27 05:27:02,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:27:02,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-27 05:27:02,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-08-27 05:27:02,055 INFO L87 Difference]: Start difference. First operand 113 states and 118 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) [2021-08-27 05:27:03,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:27:03,417 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2021-08-27 05:27:03,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 05:27:03,418 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 [2021-08-27 05:27:03,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:27:03,419 INFO L225 Difference]: With dead ends: 119 [2021-08-27 05:27:03,419 INFO L226 Difference]: Without dead ends: 114 [2021-08-27 05:27:03,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2776.8ms TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-08-27 05:27:03,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-08-27 05:27:03,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-08-27 05:27:03,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 65 states have (on average 1.6) internal successors, (104), 100 states have internal predecessors, (104), 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) [2021-08-27 05:27:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 119 transitions. [2021-08-27 05:27:03,423 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 119 transitions. Word has length 53 [2021-08-27 05:27:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:27:03,423 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 119 transitions. [2021-08-27 05:27:03,423 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) [2021-08-27 05:27:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 119 transitions. [2021-08-27 05:27:03,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-27 05:27:03,424 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:27:03,424 INFO L512 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] [2021-08-27 05:27:03,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-27 05:27:03,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:27:03,636 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting l2_insertErr5REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:27:03,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:27:03,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1274322295, now seen corresponding path program 2 times [2021-08-27 05:27:03,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:27:03,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348688462] [2021-08-27 05:27:03,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:27:03,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:27:03,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:27:03,638 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) [2021-08-27 05:27:03,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-27 05:27:04,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:27:04,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:27:04,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 05:27:04,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:27:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 73 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-08-27 05:27:05,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:27:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-08-27 05:27:08,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:27:08,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348688462] [2021-08-27 05:27:08,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348688462] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:27:08,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:27:08,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-27 05:27:08,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54427093] [2021-08-27 05:27:08,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-27 05:27:08,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:27:08,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-27 05:27:08,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-08-27 05:27:08,248 INFO L87 Difference]: Start difference. First operand 114 states and 119 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) [2021-08-27 05:27:09,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:27:09,762 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2021-08-27 05:27:09,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 05:27:09,763 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 [2021-08-27 05:27:09,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:27:09,763 INFO L225 Difference]: With dead ends: 120 [2021-08-27 05:27:09,764 INFO L226 Difference]: Without dead ends: 115 [2021-08-27 05:27:09,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2912.4ms TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-08-27 05:27:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-27 05:27:09,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-08-27 05:27:09,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 66 states have (on average 1.5909090909090908) 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) [2021-08-27 05:27:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-08-27 05:27:09,767 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 55 [2021-08-27 05:27:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:27:09,768 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-08-27 05:27:09,768 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) [2021-08-27 05:27:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-08-27 05:27:09,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-27 05:27:09,769 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:27:09,769 INFO L512 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] [2021-08-27 05:27:09,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-27 05:27:09,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:27:09,981 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting l2_insertErr5REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:27:09,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:27:09,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1041129535, now seen corresponding path program 3 times [2021-08-27 05:27:09,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:27:09,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072869567] [2021-08-27 05:27:09,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 05:27:09,983 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:27:09,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:27:09,987 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) [2021-08-27 05:27:09,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-27 05:27:10,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 05:27:10,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:27:10,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-27 05:27:10,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:27:10,649 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 [2021-08-27 05:27:10,712 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 [2021-08-27 05:27:15,685 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 19 treesize of output 18 [2021-08-27 05:27:15,691 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 18 treesize of output 16 [2021-08-27 05:27:16,106 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-27 05:27:16,107 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 [2021-08-27 05:27:16,161 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:27:16,162 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 33 [2021-08-27 05:27:16,842 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-27 05:27:16,842 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 [2021-08-27 05:27:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 1 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-08-27 05:27:17,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:27:26,584 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_93 (_ BitVec 32))) (and (or (exists ((v_calloc_model_~nmemb_103 (_ BitVec 32)) (v_calloc_model_~size_103 (_ BitVec 32)) (|v_l2_insert_#t~malloc8.base_21| (_ 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_93 (bvmul v_calloc_model_~nmemb_103 v_calloc_model_~size_103)) |v_l2_insert_#t~malloc8.base_21| (_ 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_93))))))) (and (forall ((|v_l2_insert_#t~malloc8.base_21| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store |c_#length| |v_l2_insert_#t~malloc8.base_21| (_ 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 [2021-08-27 05:27:28,590 WARN L860 $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_93 (_ BitVec 32))) (and (or (exists ((v_calloc_model_~nmemb_103 (_ BitVec 32)) (v_calloc_model_~size_103 (_ BitVec 32)) (|v_l2_insert_#t~malloc8.base_21| (_ 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_93 (bvmul v_calloc_model_~nmemb_103 v_calloc_model_~size_103)) |v_l2_insert_#t~malloc8.base_21| (_ 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_93))))))) (and (forall ((|v_l2_insert_#t~malloc8.base_21| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2) (select (store |c_#length| |v_l2_insert_#t~malloc8.base_21| (_ 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 true [2021-08-27 05:27:36,885 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)) (v_calloc_model_~ptr~0.base_94 (_ BitVec 32))) (or (and (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2)) (forall ((v_calloc_model_~size_104 (_ BitVec 32)) (v_calloc_model_~nmemb_104 (_ BitVec 32)) (|v_l2_insert_#t~malloc8.base_21| (_ 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_94 (bvmul v_calloc_model_~nmemb_104 v_calloc_model_~size_104)) |v_l2_insert_#t~malloc8.base_21| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4)))) (exists ((v_calloc_model_~ptr~0.base_93 (_ BitVec 32))) (and (or (exists ((v_calloc_model_~nmemb_103 (_ BitVec 32)) (v_calloc_model_~size_103 (_ BitVec 32)) (|v_l2_insert_#t~malloc8.base_21| (_ 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_93 (bvmul v_calloc_model_~nmemb_103 v_calloc_model_~size_103)) |v_l2_insert_#t~malloc8.base_21| (_ 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_93))))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_calloc_model_~ptr~0.base_94)))))) is different from false [2021-08-27 05:27:38,891 WARN L860 $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)) (v_calloc_model_~ptr~0.base_94 (_ BitVec 32))) (or (and (bvule v_l2_insert_~list.offset_BEFORE_CALL_2 (bvadd (_ bv4 32) v_l2_insert_~list.offset_BEFORE_CALL_2)) (forall ((v_calloc_model_~size_104 (_ BitVec 32)) (v_calloc_model_~nmemb_104 (_ BitVec 32)) (|v_l2_insert_#t~malloc8.base_21| (_ 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_94 (bvmul v_calloc_model_~nmemb_104 v_calloc_model_~size_104)) |v_l2_insert_#t~malloc8.base_21| (_ bv119 32)) v_l2_insert_~list.base_BEFORE_CALL_4)))) (exists ((v_calloc_model_~ptr~0.base_93 (_ BitVec 32))) (and (or (exists ((v_calloc_model_~nmemb_103 (_ BitVec 32)) (v_calloc_model_~size_103 (_ BitVec 32)) (|v_l2_insert_#t~malloc8.base_21| (_ 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_93 (bvmul v_calloc_model_~nmemb_103 v_calloc_model_~size_103)) |v_l2_insert_#t~malloc8.base_21| (_ 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_93))))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_calloc_model_~ptr~0.base_94)))))) is different from true [2021-08-27 05:27:55,421 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 54 treesize of output 52 [2021-08-27 05:27:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 4 not checked. [2021-08-27 05:27:55,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:27:55,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072869567] [2021-08-27 05:27:55,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072869567] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:27:55,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:27:55,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-08-27 05:27:55,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560541589] [2021-08-27 05:27:55,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-27 05:27:55,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:27:55,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-27 05:27:55,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=353, Unknown=12, NotChecked=78, Total=506 [2021-08-27 05:27:55,444 INFO L87 Difference]: Start difference. First operand 115 states and 120 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) [2021-08-27 05:29:19,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:29:19,050 INFO L93 Difference]: Finished difference Result 144 states and 151 transitions. [2021-08-27 05:29:19,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 05:29:19,059 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 [2021-08-27 05:29:19,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:29:19,060 INFO L225 Difference]: With dead ends: 144 [2021-08-27 05:29:19,060 INFO L226 Difference]: Without dead ends: 144 [2021-08-27 05:29:19,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 62668.4ms TimeCoverageRelationStatistics Valid=153, Invalid=896, Unknown=15, NotChecked=126, Total=1190 [2021-08-27 05:29:19,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-08-27 05:29:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2021-08-27 05:29:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.481012658227848) internal successors, (117), 114 states have internal predecessors, (117), 10 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-08-27 05:29:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions. [2021-08-27 05:29:19,067 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 57 [2021-08-27 05:29:19,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:29:19,067 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 136 transitions. [2021-08-27 05:29:19,067 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) [2021-08-27 05:29:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions. [2021-08-27 05:29:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-27 05:29:19,071 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:29:19,071 INFO L512 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] [2021-08-27 05:29:19,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-27 05:29:19,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:29:19,272 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting l1_insertErr0REQUIRES_VIOLATION === [l1_insertErr0REQUIRES_VIOLATION, l1_insertErr1REQUIRES_VIOLATION, l1_insertErr2REQUIRES_VIOLATION, l1_insertErr3REQUIRES_VIOLATION (and 42 more)] === [2021-08-27 05:29:19,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:29:19,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1956658940, now seen corresponding path program 1 times [2021-08-27 05:29:19,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:29:19,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476847100] [2021-08-27 05:29:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:19,273 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:29:19,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:29:19,274 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) [2021-08-27 05:29:19,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-27 05:29:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:29:20,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 05:29:20,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:29:20,300 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-08-27 05:29:20,300 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 [2021-08-27 05:29:20,762 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 [2021-08-27 05:29:21,043 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 05:29:21,044 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 [2021-08-27 05:29:21,275 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 [2021-08-27 05:29:22,265 INFO L354 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2021-08-27 05:29:22,265 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 [2021-08-27 05:29:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-08-27 05:29:22,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:29:23,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:29:23,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476847100] [2021-08-27 05:29:23,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:29:23,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [690045824] [2021-08-27 05:29:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:23,903 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 05:29:23,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 05:29:23,905 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 05:29:23,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-08-27 05:29:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:29:25,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-27 05:29:25,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:29:25,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:29:25,601 INFO L354 Elim1Store]: treesize reduction 61, result has 32.2 percent of original size [2021-08-27 05:29:25,601 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 [2021-08-27 05:29:26,324 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 [2021-08-27 05:29:26,567 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 [2021-08-27 05:29:27,592 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 05:29:27,593 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 [2021-08-27 05:29:27,916 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 05:29:27,916 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 [2021-08-27 05:29:28,230 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 [2021-08-27 05:29:30,201 INFO L354 Elim1Store]: treesize reduction 73, result has 25.5 percent of original size [2021-08-27 05:29:30,202 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 66 [2021-08-27 05:29:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-08-27 05:29:30,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:29:36,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:29:36,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072024197] [2021-08-27 05:29:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:36,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:29:36,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:29:36,324 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 05:29:36,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-27 05:29:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:29:37,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 05:29:37,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:29:37,482 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-08-27 05:29:37,482 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 [2021-08-27 05:29:37,825 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 [2021-08-27 05:29:38,068 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 05:29:38,069 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 [2021-08-27 05:29:38,232 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 [2021-08-27 05:29:38,785 INFO L354 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2021-08-27 05:29:38,786 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 [2021-08-27 05:29:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-08-27 05:29:38,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:29:40,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:29:40,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:29:40,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 05:29:40,022 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 05:29:40,022 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 05:29:40,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION [2021-08-27 05:29:40,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION [2021-08-27 05:29:40,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION [2021-08-27 05:29:40,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION [2021-08-27 05:29:40,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION [2021-08-27 05:29:40,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION [2021-08-27 05:29:40,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION [2021-08-27 05:29:40,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION [2021-08-27 05:29:40,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION [2021-08-27 05:29:40,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION [2021-08-27 05:29:40,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION [2021-08-27 05:29:40,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION [2021-08-27 05:29:40,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr6REQUIRES_VIOLATION [2021-08-27 05:29:40,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr7REQUIRES_VIOLATION [2021-08-27 05:29:40,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr8REQUIRES_VIOLATION [2021-08-27 05:29:40,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr9REQUIRES_VIOLATION [2021-08-27 05:29:40,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION [2021-08-27 05:29:40,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION [2021-08-27 05:29:40,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:29:40,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:29:40,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:29:40,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:29:40,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:29:40,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:29:40,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 05:29:40,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 05:29:40,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 05:29:40,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 05:29:40,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:29:40,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:29:40,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:29:40,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 05:29:40,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 05:29:40,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 05:29:40,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 05:29:40,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:29:40,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:29:40,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:29:40,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION [2021-08-27 05:29:40,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION [2021-08-27 05:29:40,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:29:40,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:29:40,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:29:40,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:29:40,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:29:40,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:29:40,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-08-27 05:29:40,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-08-27 05:29:40,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-27 05:29:40,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:29:40,657 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:29:40,662 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:29:40,663 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:29:40,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:29:40 BoogieIcfgContainer [2021-08-27 05:29:40,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:29:40,672 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:29:40,672 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:29:40,672 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:29:40,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:23:35" (3/4) ... [2021-08-27 05:29:40,678 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:29:40,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:29:40,679 INFO L168 Benchmark]: Toolchain (without parser) took 367017.03 ms. Allocated memory was 58.7 MB in the beginning and 157.3 MB in the end (delta: 98.6 MB). Free memory was 35.8 MB in the beginning and 87.6 MB in the end (delta: -51.8 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:29:40,680 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 39.6 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:29:40,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.70 ms. Allocated memory is still 58.7 MB. Free memory was 35.6 MB in the beginning and 31.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-08-27 05:29:40,680 INFO L168 Benchmark]: Boogie Preprocessor took 84.47 ms. Allocated memory is still 58.7 MB. Free memory was 31.4 MB in the beginning and 27.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:29:40,680 INFO L168 Benchmark]: RCFGBuilder took 943.41 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.8 MB in the beginning and 32.9 MB in the end (delta: -5.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2021-08-27 05:29:40,681 INFO L168 Benchmark]: TraceAbstraction took 365559.63 ms. Allocated memory was 71.3 MB in the beginning and 157.3 MB in the end (delta: 86.0 MB). Free memory was 32.2 MB in the beginning and 87.6 MB in the end (delta: -55.4 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-08-27 05:29:40,681 INFO L168 Benchmark]: Witness Printer took 6.41 ms. Allocated memory is still 157.3 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:29:40,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 39.6 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 416.70 ms. Allocated memory is still 58.7 MB. Free memory was 35.6 MB in the beginning and 31.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.47 ms. Allocated memory is still 58.7 MB. Free memory was 31.4 MB in the beginning and 27.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 943.41 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.8 MB in the beginning and 32.9 MB in the end (delta: -5.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 365559.63 ms. Allocated memory was 71.3 MB in the beginning and 157.3 MB in the end (delta: 86.0 MB). Free memory was 32.2 MB in the beginning and 87.6 MB in the end (delta: -55.4 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. * Witness Printer took 6.41 ms. Allocated memory is still 157.3 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 667]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 667]: 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: 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 free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: 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. - 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: 365482.5ms, OverallIterations: 16, TraceHistogramMax: 16, EmptinessCheckTime: 25.2ms, AutomataDifference: 215387.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1527 SDtfs, 702 SDslu, 9560 SDs, 0 SdLazy, 3591 SolverSat, 207 SolverUnsat, 69 SolverUnknown, 0 SolverNotchecked, 164150.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1213 GetRequests, 975 SyntacticMatches, 24 SemanticMatches, 214 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 140681.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=15, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 120.7ms AutomataMinimizationTime, 15 MinimizatonAttempts, 49 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 251.4ms SsaConstructionTime, 1031.1ms SatisfiabilityAnalysisTime, 119833.6ms InterpolantComputationTime, 591 NumberOfCodeBlocks, 542 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1152 ConstructedInterpolants, 111 QuantifiedInterpolants, 5311 SizeOfPredicates, 55 NumberOfNonLiveVariables, 2882 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 30 InterpolantComputations, 11 PerfectInterpolantSequences, 1047/1568 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 [2021-08-27 05:29:40,800 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...