./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0220.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 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-0220.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebc5ac28f2460014630964c3ebebf9e4c3b4bcee .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0220.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebc5ac28f2460014630964c3ebebf9e4c3b4bcee ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:24:10,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:24:10,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:24:10,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:24:10,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:24:10,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:24:10,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:24:10,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:24:10,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:24:10,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:24:10,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:24:10,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:24:10,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:24:10,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:24:10,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:24:10,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:24:10,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:24:10,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:24:10,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:24:10,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:24:10,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:24:10,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:24:10,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:24:10,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:24:10,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:24:10,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:24:10,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:24:10,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:24:10,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:24:10,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:24:10,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:24:10,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:24:10,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:24:10,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:24:10,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:24:10,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:24:10,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:24:10,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:24:10,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:24:10,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:24:10,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:24:10,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:24:10,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:24:10,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:24:10,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:24:10,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:24:10,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:24:10,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:24:10,505 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:24:10,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:24:10,505 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:24:10,505 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:24:10,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:24:10,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:24:10,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:24:10,506 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:24:10,506 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:24:10,506 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:24:10,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:24:10,506 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:24:10,507 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:24:10,507 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:24:10,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:24:10,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:24:10,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:24:10,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:24:10,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:24:10,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:24:10,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:24:10,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:24:10,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:24:10,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebc5ac28f2460014630964c3ebebf9e4c3b4bcee [2021-08-27 05:24:10,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:24:10,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:24:10,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:24:10,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:24:10,789 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:24:10,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0220.i [2021-08-27 05:24:10,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd7f200f1/58b8ce42eed541bb868c2cf3fdfa5c13/FLAG4e912b229 [2021-08-27 05:24:11,302 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:24:11,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0220.i [2021-08-27 05:24:11,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd7f200f1/58b8ce42eed541bb868c2cf3fdfa5c13/FLAG4e912b229 [2021-08-27 05:24:11,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd7f200f1/58b8ce42eed541bb868c2cf3fdfa5c13 [2021-08-27 05:24:11,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:24:11,327 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:24:11,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:24:11,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:24:11,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:24:11,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:24:11" (1/1) ... [2021-08-27 05:24:11,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d5bd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:11, skipping insertion in model container [2021-08-27 05:24:11,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:24:11" (1/1) ... [2021-08-27 05:24:11,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:24:11,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:24:11,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:24:11,598 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:24:11,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:24:11,658 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:24:11,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:11 WrapperNode [2021-08-27 05:24:11,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:24:11,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:24:11,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:24:11,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:24:11,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:11" (1/1) ... [2021-08-27 05:24:11,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:11" (1/1) ... [2021-08-27 05:24:11,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:11" (1/1) ... [2021-08-27 05:24:11,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:11" (1/1) ... [2021-08-27 05:24:11,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:11" (1/1) ... [2021-08-27 05:24:11,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:11" (1/1) ... [2021-08-27 05:24:11,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:11" (1/1) ... [2021-08-27 05:24:11,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:24:11,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:24:11,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:24:11,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:24:11,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:11" (1/1) ... [2021-08-27 05:24:11,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:24:11,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:24:11,745 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 05:24:11,753 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 05:24:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:24:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:24:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:24:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:24:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:24:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:24:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:24:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:24:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-27 05:24:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-27 05:24:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-27 05:24:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-27 05:24:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:24:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 05:24:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:24:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:24:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:24:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:24:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:24:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:24:11,779 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:24:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:24:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:24:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:24:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:24:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:24:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:24:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:24:11,780 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:24:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:24:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:24:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:24:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:24:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:24:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:24:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:24:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:24:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:24:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:24:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:24:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:24:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:24:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:24:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:24:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:24:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:24:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:24:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:24:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:24:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:24:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:24:11,783 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:24:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:24:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:24:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:24:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:24:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:24:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:24:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:24:11,784 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:24:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:24:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:24:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:24:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:24:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:24:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:24:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:24:11,785 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:24:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:24:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:24:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:24:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:24:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:24:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:24:11,786 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:24:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:24:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:24:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:24:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:24:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:24:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:24:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:24:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:24:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:24:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:24:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:24:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:24:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:24:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:24:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:24:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:24:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:24:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:24:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:24:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:24:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:24:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:24:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:24:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:24:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:24:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:24:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:24:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:24:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:24:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:24:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:24:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:24:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:24:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:24:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:24:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:24:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:24:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:24:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:24:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:24:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:24:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:24:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:24:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:24:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:24:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:24:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:24:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:24:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:24:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:24:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:24:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 05:24:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 05:24:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 05:24:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 05:24:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 05:24:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 05:24:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 05:24:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 05:24:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 05:24:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 05:24:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 05:24:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 05:24:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 05:24:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 05:24:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 05:24:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 05:24:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 05:24:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 05:24:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 05:24:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 05:24:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 05:24:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 05:24:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 05:24:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 05:24:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 05:24:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 05:24:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 05:24:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 05:24:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 05:24:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 05:24:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 05:24:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 05:24:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 05:24:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 05:24:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 05:24:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 05:24:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 05:24:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 05:24:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-27 05:24:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-27 05:24:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 05:24:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 05:24:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-27 05:24:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-27 05:24:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-27 05:24:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 05:24:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 05:24:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 05:24:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 05:24:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 05:24:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 05:24:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-27 05:24:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:24:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 05:24:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:24:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-27 05:24:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:24:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:24:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-27 05:24:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:24:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-27 05:24:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:24:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:24:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 05:24:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 05:24:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:24:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 05:24:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 05:24:12,155 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 05:24:12,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:24:12,336 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 05:24:12,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:24:12 BoogieIcfgContainer [2021-08-27 05:24:12,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:24:12,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:24:12,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:24:12,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:24:12,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:24:11" (1/3) ... [2021-08-27 05:24:12,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbc9b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:24:12, skipping insertion in model container [2021-08-27 05:24:12,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:11" (2/3) ... [2021-08-27 05:24:12,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbc9b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:24:12, skipping insertion in model container [2021-08-27 05:24:12,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:24:12" (3/3) ... [2021-08-27 05:24:12,346 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0220.i [2021-08-27 05:24:12,350 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:24:12,350 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-08-27 05:24:12,376 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:24:12,384 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 05:24:12,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-08-27 05:24:12,398 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 05:24:12,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:24:12,403 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:12,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:24:12,404 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 05:24:12,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:12,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1812237907, now seen corresponding path program 1 times [2021-08-27 05:24:12,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:24:12,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823166163] [2021-08-27 05:24:12,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:12,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:24:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:24:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:12,596 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 05:24:12,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:24:12,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823166163] [2021-08-27 05:24:12,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823166163] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:24:12,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:24:12,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:24:12,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664834145] [2021-08-27 05:24:12,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:24:12,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:24:12,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:24:12,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:24:12,622 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 05:24:12,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:12,813 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2021-08-27 05:24:12,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:24:12,814 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 05:24:12,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:12,822 INFO L225 Difference]: With dead ends: 124 [2021-08-27 05:24:12,822 INFO L226 Difference]: Without dead ends: 121 [2021-08-27 05:24:12,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:24:12,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-08-27 05:24:12,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2021-08-27 05:24:12,858 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 05:24:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2021-08-27 05:24:12,864 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 7 [2021-08-27 05:24:12,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:12,864 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2021-08-27 05:24:12,864 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 05:24:12,865 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2021-08-27 05:24:12,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 05:24:12,865 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:12,867 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:24:12,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 05:24:12,868 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 05:24:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:12,869 INFO L82 PathProgramCache]: Analyzing trace with hash 723613811, now seen corresponding path program 1 times [2021-08-27 05:24:12,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:24:12,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995686681] [2021-08-27 05:24:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:12,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:24:12,901 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:24:12,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359205973] [2021-08-27 05:24:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:12,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:24:12,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:24:12,903 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 05:24:12,912 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 05:24:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:13,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:24:13,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:13,142 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 05:24:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:24:13,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:24:13,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995686681] [2021-08-27 05:24:13,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:24:13,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359205973] [2021-08-27 05:24:13,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359205973] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:24:13,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:24:13,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 05:24:13,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667916762] [2021-08-27 05:24:13,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:24:13,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:24:13,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:24:13,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:24:13,150 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 05:24:13,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:13,218 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2021-08-27 05:24:13,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:24:13,218 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 05:24:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:13,219 INFO L225 Difference]: With dead ends: 119 [2021-08-27 05:24:13,219 INFO L226 Difference]: Without dead ends: 119 [2021-08-27 05:24:13,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:24:13,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-27 05:24:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-08-27 05:24:13,225 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 05:24:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2021-08-27 05:24:13,226 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 10 [2021-08-27 05:24:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:13,226 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2021-08-27 05:24:13,226 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 05:24:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2021-08-27 05:24:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 05:24:13,227 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:13,227 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:24:13,250 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 05:24:13,441 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 05:24:13,441 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 05:24:13,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:13,441 INFO L82 PathProgramCache]: Analyzing trace with hash 723613812, now seen corresponding path program 1 times [2021-08-27 05:24:13,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:24:13,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506213284] [2021-08-27 05:24:13,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:13,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:24:13,453 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:24:13,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103778630] [2021-08-27 05:24:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:13,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:24:13,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:24:13,455 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 05:24:13,474 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 05:24:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:13,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 05:24:13,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:13,673 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 05:24:13,692 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 05:24:13,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:24:13,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506213284] [2021-08-27 05:24:13,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:24:13,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103778630] [2021-08-27 05:24:13,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103778630] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:24:13,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:24:13,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:24:13,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084679518] [2021-08-27 05:24:13,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:24:13,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:24:13,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:24:13,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:24:13,695 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 05:24:13,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:13,762 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2021-08-27 05:24:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:24:13,762 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 05:24:13,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:13,763 INFO L225 Difference]: With dead ends: 118 [2021-08-27 05:24:13,763 INFO L226 Difference]: Without dead ends: 118 [2021-08-27 05:24:13,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:24:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-27 05:24:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-27 05:24:13,767 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 05:24:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-27 05:24:13,768 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 10 [2021-08-27 05:24:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:13,769 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-27 05:24:13,769 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 05:24:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-27 05:24:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-27 05:24:13,769 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:13,770 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 05:24:13,790 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 05:24:13,989 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 05:24:13,990 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 05:24:13,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:13,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1381204090, now seen corresponding path program 1 times [2021-08-27 05:24:13,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:24:13,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140650042] [2021-08-27 05:24:13,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:13,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:24:14,000 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:24:14,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117565627] [2021-08-27 05:24:14,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:14,000 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:24:14,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:24:14,001 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 05:24:14,028 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 05:24:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:14,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 05:24:14,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:14,329 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-08-27 05:24:14,330 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 05:24:14,359 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 05:24:14,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:24:14,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140650042] [2021-08-27 05:24:14,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:24:14,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117565627] [2021-08-27 05:24:14,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117565627] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:24:14,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:24:14,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 05:24:14,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758869851] [2021-08-27 05:24:14,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 05:24:14,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:24:14,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 05:24:14,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:24:14,364 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 05:24:14,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:14,536 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2021-08-27 05:24:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:24:14,537 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 05:24:14,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:14,539 INFO L225 Difference]: With dead ends: 115 [2021-08-27 05:24:14,539 INFO L226 Difference]: Without dead ends: 115 [2021-08-27 05:24:14,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:24:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-27 05:24:14,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-08-27 05:24:14,557 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 05:24:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-08-27 05:24:14,559 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 37 [2021-08-27 05:24:14,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:14,559 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-08-27 05:24:14,559 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 05:24:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-08-27 05:24:14,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-27 05:24:14,560 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:14,560 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 05:24:14,582 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 05:24:14,779 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 05:24:14,779 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 05:24:14,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:14,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1381204089, now seen corresponding path program 1 times [2021-08-27 05:24:14,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:24:14,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545773218] [2021-08-27 05:24:14,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:14,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:24:14,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 05:24:14,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190673029] [2021-08-27 05:24:14,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:14,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:24:14,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:24:14,789 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 05:24:14,796 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 05:24:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:15,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-27 05:24:15,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:15,145 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 05:24:16,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:24:16,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545773218] [2021-08-27 05:24:16,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 05:24:16,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190673029] [2021-08-27 05:24:16,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:24:16,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:24:16,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 05:24:16,094 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-08-27 05:24:16,094 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 05:24:16,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION [2021-08-27 05:24:16,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION [2021-08-27 05:24:16,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION [2021-08-27 05:24:16,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION [2021-08-27 05:24:16,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION [2021-08-27 05:24:16,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION [2021-08-27 05:24:16,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION [2021-08-27 05:24:16,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION [2021-08-27 05:24:16,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION [2021-08-27 05:24:16,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION [2021-08-27 05:24:16,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION [2021-08-27 05:24:16,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION [2021-08-27 05:24:16,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr6REQUIRES_VIOLATION [2021-08-27 05:24:16,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr7REQUIRES_VIOLATION [2021-08-27 05:24:16,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr8REQUIRES_VIOLATION [2021-08-27 05:24:16,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr9REQUIRES_VIOLATION [2021-08-27 05:24:16,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION [2021-08-27 05:24:16,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION [2021-08-27 05:24:16,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:24:16,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:24:16,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:24:16,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:24:16,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:24:16,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:24:16,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 05:24:16,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 05:24:16,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 05:24:16,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 05:24:16,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:24:16,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:24:16,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:24:16,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 05:24:16,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 05:24:16,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 05:24:16,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 05:24:16,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:24:16,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:24:16,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:24:16,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:24:16,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:24:16,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:24:16,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5REQUIRES_VIOLATION [2021-08-27 05:24:16,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6REQUIRES_VIOLATION [2021-08-27 05:24:16,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:24:16,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:24:16,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:24:16,127 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 05:24:16,326 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 05:24:16,330 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:24:16,334 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:24:16,334 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:24:16,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:24:16 BoogieIcfgContainer [2021-08-27 05:24:16,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:24:16,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:24:16,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:24:16,345 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:24:16,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:24:12" (3/4) ... [2021-08-27 05:24:16,347 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:24:16,347 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:24:16,348 INFO L168 Benchmark]: Toolchain (without parser) took 5021.32 ms. Allocated memory was 75.5 MB in the beginning and 134.2 MB in the end (delta: 58.7 MB). Free memory was 59.0 MB in the beginning and 67.6 MB in the end (delta: -8.6 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:24:16,348 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 75.5 MB. Free memory is still 58.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:24:16,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.88 ms. Allocated memory is still 75.5 MB. Free memory was 58.7 MB in the beginning and 50.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-08-27 05:24:16,349 INFO L168 Benchmark]: Boogie Preprocessor took 58.09 ms. Allocated memory is still 75.5 MB. Free memory was 50.0 MB in the beginning and 46.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:24:16,349 INFO L168 Benchmark]: RCFGBuilder took 620.07 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 46.6 MB in the beginning and 43.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:24:16,349 INFO L168 Benchmark]: TraceAbstraction took 4004.92 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 43.1 MB in the beginning and 67.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-08-27 05:24:16,350 INFO L168 Benchmark]: Witness Printer took 2.37 ms. Allocated memory is still 134.2 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:24:16,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 75.5 MB. Free memory is still 58.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.88 ms. Allocated memory is still 75.5 MB. Free memory was 58.7 MB in the beginning and 50.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.09 ms. Allocated memory is still 75.5 MB. Free memory was 50.0 MB in the beginning and 46.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 620.07 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 46.6 MB in the beginning and 43.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4004.92 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 43.1 MB in the beginning and 67.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. * Witness Printer took 2.37 ms. Allocated memory is still 134.2 MB. Free memory is still 67.6 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: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L687] static struct L1 *list; [L689] CALL l1_insert(&list) [L676] CALL, EXPR calloc_model(1U, sizeof *item) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L676] RET, EXPR calloc_model(1U, sizeof *item) [L676] struct L1 *item = calloc_model(1U, sizeof *item); [L677] COND FALSE !(!item) [L680] CALL l2_insert(&item->l2) [L655] CALL, EXPR calloc_model(1U, sizeof *item) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L655] RET, EXPR calloc_model(1U, sizeof *item) [L655] struct L2 *item = calloc_model(1U, sizeof *item); [L656] COND FALSE !(!item) [L658] item->proto = malloc(119U) - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 659]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 661]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 662]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 141 locations, 46 error locations. Started 1 CEGAR loops. OverallTime: 3954.4ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 13.1ms, AutomataDifference: 530.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 464 SDtfs, 59 SDslu, 588 SDs, 0 SdLazy, 474 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 308.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 82.0ms 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: 59.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 38.1ms SsaConstructionTime, 89.3ms SatisfiabilityAnalysisTime, 442.7ms 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 05:24:16,367 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 05:24:17,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:24:17,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:24:17,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:24:17,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:24:17,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:24:17,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:24:17,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:24:17,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:24:17,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:24:17,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:24:17,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:24:17,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:24:17,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:24:18,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:24:18,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:24:18,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:24:18,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:24:18,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:24:18,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:24:18,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:24:18,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:24:18,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:24:18,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:24:18,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:24:18,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:24:18,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:24:18,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:24:18,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:24:18,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:24:18,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:24:18,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:24:18,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:24:18,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:24:18,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:24:18,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:24:18,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:24:18,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:24:18,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:24:18,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:24:18,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:24:18,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 05:24:18,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:24:18,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:24:18,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:24:18,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:24:18,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:24:18,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:24:18,066 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:24:18,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:24:18,067 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:24:18,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:24:18,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:24:18,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:24:18,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:24:18,067 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:24:18,067 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:24:18,068 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:24:18,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:24:18,073 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:24:18,073 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 05:24:18,073 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 05:24:18,073 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:24:18,073 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:24:18,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:24:18,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:24:18,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:24:18,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:24:18,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:24:18,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:24:18,074 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 05:24:18,074 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 05:24:18,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:24:18,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 05:24:18,075 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebc5ac28f2460014630964c3ebebf9e4c3b4bcee [2021-08-27 05:24:18,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:24:18,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:24:18,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:24:18,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:24:18,370 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:24:18,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0220.i [2021-08-27 05:24:18,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a26f38b07/509724be8a18491cbde1d446207eb29b/FLAGb9888356d [2021-08-27 05:24:18,871 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:24:18,871 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0220.i [2021-08-27 05:24:18,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a26f38b07/509724be8a18491cbde1d446207eb29b/FLAGb9888356d [2021-08-27 05:24:18,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a26f38b07/509724be8a18491cbde1d446207eb29b [2021-08-27 05:24:18,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:24:18,902 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:24:18,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:24:18,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:24:18,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:24:18,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:24:18" (1/1) ... [2021-08-27 05:24:18,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680974dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:18, skipping insertion in model container [2021-08-27 05:24:18,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:24:18" (1/1) ... [2021-08-27 05:24:18,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:24:18,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:24:19,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:24:19,247 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:24:19,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:24:19,319 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:24:19,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:19 WrapperNode [2021-08-27 05:24:19,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:24:19,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:24:19,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:24:19,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:24:19,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:19" (1/1) ... [2021-08-27 05:24:19,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:19" (1/1) ... [2021-08-27 05:24:19,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:19" (1/1) ... [2021-08-27 05:24:19,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:19" (1/1) ... [2021-08-27 05:24:19,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:19" (1/1) ... [2021-08-27 05:24:19,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:19" (1/1) ... [2021-08-27 05:24:19,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:19" (1/1) ... [2021-08-27 05:24:19,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:24:19,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:24:19,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:24:19,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:24:19,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:19" (1/1) ... [2021-08-27 05:24:19,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:24:19,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:24:19,442 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 05:24:19,474 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 05:24:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:24:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:24:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:24:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:24:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:24:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:24:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:24:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:24:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:24:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-08-27 05:24:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-08-27 05:24:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-08-27 05:24:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-08-27 05:24:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:24:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 05:24:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:24:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:24:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:24:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:24:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:24:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:24:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:24:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:24:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:24:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:24:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:24:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:24:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:24:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:24:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:24:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:24:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:24:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:24:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:24:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:24:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:24:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:24:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:24:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:24:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:24:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:24:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:24:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:24:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:24:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:24:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:24:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:24:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:24:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:24:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:24:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:24:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:24:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:24:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:24:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:24:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:24:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:24:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:24:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:24:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:24:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:24:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:24:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:24:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:24:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:24:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:24:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:24:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:24:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:24:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:24:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:24:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:24:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:24:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:24:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:24:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:24:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:24:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:24:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:24:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:24:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:24:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:24:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:24:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:24:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:24:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:24:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:24:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:24:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:24:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:24:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:24:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:24:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:24:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:24:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:24:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:24:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:24:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:24:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:24:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:24:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:24:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:24:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 05:24:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-08-27 05:24:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-08-27 05:24:19,511 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 05:24:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-08-27 05:24:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-08-27 05:24:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-08-27 05:24:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-08-27 05:24:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-08-27 05:24:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-08-27 05:24:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-08-27 05:24:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-08-27 05:24:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-08-27 05:24:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-08-27 05:24:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-08-27 05:24:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-08-27 05:24:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-08-27 05:24:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-08-27 05:24:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-08-27 05:24:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-08-27 05:24:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-08-27 05:24:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-08-27 05:24:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-08-27 05:24:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-08-27 05:24:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-08-27 05:24:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-08-27 05:24:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-08-27 05:24:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-08-27 05:24:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-08-27 05:24:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-08-27 05:24:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-08-27 05:24:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-08-27 05:24:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-08-27 05:24:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-08-27 05:24:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-08-27 05:24:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-08-27 05:24:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-08-27 05:24:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-08-27 05:24:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-08-27 05:24:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-08-27 05:24:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-08-27 05:24:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-08-27 05:24:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-08-27 05:24:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-08-27 05:24:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-08-27 05:24:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-08-27 05:24:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-08-27 05:24:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-08-27 05:24:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-08-27 05:24:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-08-27 05:24:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-08-27 05:24:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-08-27 05:24:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:24:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 05:24:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:24:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-08-27 05:24:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:24:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:24:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-08-27 05:24:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:24:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-08-27 05:24:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:24:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:24:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 05:24:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 05:24:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:24:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:24:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 05:24:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 05:24:20,069 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 05:24:20,359 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:24:20,359 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 05:24:20,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:24:20 BoogieIcfgContainer [2021-08-27 05:24:20,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:24:20,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:24:20,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:24:20,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:24:20,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:24:18" (1/3) ... [2021-08-27 05:24:20,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbee76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:24:20, skipping insertion in model container [2021-08-27 05:24:20,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:24:19" (2/3) ... [2021-08-27 05:24:20,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbee76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:24:20, skipping insertion in model container [2021-08-27 05:24:20,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:24:20" (3/3) ... [2021-08-27 05:24:20,366 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0220.i [2021-08-27 05:24:20,369 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:24:20,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-08-27 05:24:20,397 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:24:20,401 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 05:24:20,401 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-08-27 05:24:20,422 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 05:24:20,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:24:20,426 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:20,426 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:24:20,426 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 05:24:20,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:20,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1291303161, now seen corresponding path program 1 times [2021-08-27 05:24:20,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:20,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999878739] [2021-08-27 05:24:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:20,442 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:20,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:20,444 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 05:24:20,445 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 05:24:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:20,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-27 05:24:20,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:20,828 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 05:24:20,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:20,872 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 05:24:20,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:20,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999878739] [2021-08-27 05:24:20,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999878739] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:24:20,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:24:20,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:24:20,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399144277] [2021-08-27 05:24:20,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-27 05:24:20,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:20,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 05:24:20,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 05:24:20,899 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 05:24:20,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:20,919 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-08-27 05:24:20,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 05:24:20,920 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 05:24:20,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:20,925 INFO L225 Difference]: With dead ends: 121 [2021-08-27 05:24:20,925 INFO L226 Difference]: Without dead ends: 118 [2021-08-27 05:24:20,927 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 05:24:20,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-27 05:24:20,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-27 05:24:20,957 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 05:24:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-27 05:24:20,959 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 7 [2021-08-27 05:24:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:20,959 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-27 05:24:20,960 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 05:24:20,960 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-27 05:24:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 05:24:20,960 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:20,960 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:24:20,970 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 05:24:21,167 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 05:24:21,167 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 05:24:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:21,168 INFO L82 PathProgramCache]: Analyzing trace with hash 892717489, now seen corresponding path program 1 times [2021-08-27 05:24:21,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:21,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689140929] [2021-08-27 05:24:21,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:21,169 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:21,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:21,170 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 05:24:21,172 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 05:24:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:21,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:24:21,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:21,471 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 05:24:21,478 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 05:24:21,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:21,508 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 05:24:21,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:21,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689140929] [2021-08-27 05:24:21,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689140929] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:24:21,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:24:21,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:24:21,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593615643] [2021-08-27 05:24:21,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:24:21,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:21,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:24:21,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:24:21,511 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 05:24:21,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:21,634 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2021-08-27 05:24:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:24:21,635 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 05:24:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:21,636 INFO L225 Difference]: With dead ends: 117 [2021-08-27 05:24:21,636 INFO L226 Difference]: Without dead ends: 117 [2021-08-27 05:24:21,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:24:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-27 05:24:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-27 05:24:21,645 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 05:24:21,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-27 05:24:21,646 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 10 [2021-08-27 05:24:21,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:21,646 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-27 05:24:21,647 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 05:24:21,647 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-27 05:24:21,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 05:24:21,647 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:21,647 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:24:21,658 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 05:24:21,852 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 05:24:21,853 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 05:24:21,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:21,854 INFO L82 PathProgramCache]: Analyzing trace with hash 892717490, now seen corresponding path program 1 times [2021-08-27 05:24:21,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:21,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472269237] [2021-08-27 05:24:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:21,854 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:21,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:21,856 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 05:24:21,865 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 05:24:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:22,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 05:24:22,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:22,086 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 05:24:22,121 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 05:24:22,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:22,311 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 05:24:22,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:22,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472269237] [2021-08-27 05:24:22,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472269237] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:24:22,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:24:22,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 4 [2021-08-27 05:24:22,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028697356] [2021-08-27 05:24:22,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:24:22,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:22,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:24:22,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:24:22,313 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 05:24:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:23,008 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2021-08-27 05:24:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:24:23,010 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 05:24:23,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:23,011 INFO L225 Difference]: With dead ends: 116 [2021-08-27 05:24:23,011 INFO L226 Difference]: Without dead ends: 116 [2021-08-27 05:24:23,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 171.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:24:23,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-27 05:24:23,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-27 05:24:23,017 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 05:24:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-27 05:24:23,018 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 10 [2021-08-27 05:24:23,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:23,018 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-27 05:24:23,018 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 05:24:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-27 05:24:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-27 05:24:23,019 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:23,019 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 05:24:23,026 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 05:24:23,219 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 05:24:23,220 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 05:24:23,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:23,220 INFO L82 PathProgramCache]: Analyzing trace with hash 71295803, now seen corresponding path program 1 times [2021-08-27 05:24:23,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:23,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364594446] [2021-08-27 05:24:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:23,221 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:23,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:23,224 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 05:24:23,225 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 05:24:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:23,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 05:24:23,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:23,699 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 05:24:23,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:24,413 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 05:24:24,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:24,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364594446] [2021-08-27 05:24:24,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364594446] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-27 05:24:24,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 05:24:24,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-08-27 05:24:24,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681330321] [2021-08-27 05:24:24,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:24:24,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:24,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:24:24,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:24:24,415 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 05:24:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:24,623 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-08-27 05:24:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 05:24:24,624 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 05:24:24,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:24,624 INFO L225 Difference]: With dead ends: 122 [2021-08-27 05:24:24,625 INFO L226 Difference]: Without dead ends: 117 [2021-08-27 05:24:24,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 395.7ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-27 05:24:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-27 05:24:24,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-27 05:24:24,630 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 05:24:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-27 05:24:24,631 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 37 [2021-08-27 05:24:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:24,632 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-27 05:24:24,632 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 05:24:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-27 05:24:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-27 05:24:24,632 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:24,633 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 05:24:24,642 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 05:24:24,836 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 05:24:24,837 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 05:24:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:24,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1772361669, now seen corresponding path program 1 times [2021-08-27 05:24:24,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:24,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579151943] [2021-08-27 05:24:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:24,838 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:24,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:24,839 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 05:24:24,840 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 05:24:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:25,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 05:24:25,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:25,307 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 05:24:25,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:26,151 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 05:24:26,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:26,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579151943] [2021-08-27 05:24:26,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579151943] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:24:26,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:24:26,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-08-27 05:24:26,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272136420] [2021-08-27 05:24:26,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 05:24:26,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:26,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 05:24:26,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-08-27 05:24:26,153 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 05:24:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:26,399 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-08-27 05:24:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:24:26,401 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 05:24:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:26,401 INFO L225 Difference]: With dead ends: 123 [2021-08-27 05:24:26,402 INFO L226 Difference]: Without dead ends: 118 [2021-08-27 05:24:26,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 500.3ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-27 05:24:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-27 05:24:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-27 05:24:26,405 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 05:24:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-08-27 05:24:26,406 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 39 [2021-08-27 05:24:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:26,406 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-08-27 05:24:26,406 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 05:24:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-08-27 05:24:26,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-27 05:24:26,407 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:26,407 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 05:24:26,417 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 05:24:26,612 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 05:24:26,615 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 05:24:26,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:26,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1896960251, now seen corresponding path program 2 times [2021-08-27 05:24:26,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:26,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990341579] [2021-08-27 05:24:26,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:24:26,616 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:26,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:26,617 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 05:24:26,618 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 05:24:26,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 05:24:26,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:24:26,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 05:24:26,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:26,889 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 05:24:27,017 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 05:24:27,018 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 05:24:27,040 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 05:24:27,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:27,213 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 05:24:27,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:27,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990341579] [2021-08-27 05:24:27,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990341579] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:24:27,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:24:27,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2021-08-27 05:24:27,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106443988] [2021-08-27 05:24:27,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:24:27,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:24:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:24:27,215 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 05:24:27,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:27,578 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2021-08-27 05:24:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:24:27,579 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 05:24:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:27,579 INFO L225 Difference]: With dead ends: 115 [2021-08-27 05:24:27,580 INFO L226 Difference]: Without dead ends: 115 [2021-08-27 05:24:27,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 65.2ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:24:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-27 05:24:27,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-08-27 05:24:27,585 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 05:24:27,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-08-27 05:24:27,586 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 41 [2021-08-27 05:24:27,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:27,587 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-08-27 05:24:27,587 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 05:24:27,587 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-08-27 05:24:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-27 05:24:27,588 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:27,588 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 05:24:27,597 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 05:24:27,795 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 05:24:27,795 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 05:24:27,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:27,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1896960252, now seen corresponding path program 1 times [2021-08-27 05:24:27,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:27,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116471162] [2021-08-27 05:24:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:27,796 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:27,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:27,797 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 05:24:27,799 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 05:24:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:28,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 05:24:28,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:28,361 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 05:24:28,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:29,354 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 05:24:29,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:29,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116471162] [2021-08-27 05:24:29,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116471162] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:24:29,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:24:29,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-27 05:24:29,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951148012] [2021-08-27 05:24:29,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 05:24:29,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:29,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 05:24:29,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-08-27 05:24:29,356 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 05:24:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:29,751 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-08-27 05:24:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:24:29,755 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 05:24:29,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:29,756 INFO L225 Difference]: With dead ends: 121 [2021-08-27 05:24:29,756 INFO L226 Difference]: Without dead ends: 116 [2021-08-27 05:24:29,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 778.4ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-27 05:24:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-27 05:24:29,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-27 05:24:29,759 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 05:24:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-27 05:24:29,760 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 41 [2021-08-27 05:24:29,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:29,760 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-27 05:24:29,760 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 05:24:29,760 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-27 05:24:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-27 05:24:29,761 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:29,761 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 05:24:29,771 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 05:24:29,968 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 05:24:29,969 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 05:24:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:29,969 INFO L82 PathProgramCache]: Analyzing trace with hash 810613510, now seen corresponding path program 2 times [2021-08-27 05:24:29,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:29,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767813763] [2021-08-27 05:24:29,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:24:29,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:29,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:29,971 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 05:24:29,972 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 05:24:30,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:24:30,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:24:30,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 05:24:30,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:30,634 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 05:24:30,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:31,760 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 05:24:31,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:31,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767813763] [2021-08-27 05:24:31,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767813763] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:24:31,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:24:31,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-27 05:24:31,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173092271] [2021-08-27 05:24:31,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 05:24:31,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 05:24:31,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-08-27 05:24:31,763 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 05:24:32,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:32,162 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-08-27 05:24:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 05:24:32,162 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 05:24:32,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:32,163 INFO L225 Difference]: With dead ends: 122 [2021-08-27 05:24:32,163 INFO L226 Difference]: Without dead ends: 117 [2021-08-27 05:24:32,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 800.6ms TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-08-27 05:24:32,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-27 05:24:32,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-27 05:24:32,166 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 05:24:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2021-08-27 05:24:32,169 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 43 [2021-08-27 05:24:32,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:32,169 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2021-08-27 05:24:32,169 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 05:24:32,169 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2021-08-27 05:24:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-27 05:24:32,172 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:32,172 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 05:24:32,184 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 05:24:32,381 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 05:24:32,382 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 05:24:32,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:32,382 INFO L82 PathProgramCache]: Analyzing trace with hash 126824124, now seen corresponding path program 3 times [2021-08-27 05:24:32,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:32,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411416820] [2021-08-27 05:24:32,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 05:24:32,383 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:32,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:32,401 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 05:24:32,402 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 05:24:32,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 05:24:32,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:24:32,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 05:24:32,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:32,819 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 05:24:32,847 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 05:24:33,966 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:24:33,966 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 1 case distinctions, treesize of input 28 treesize of output 30 [2021-08-27 05:24:33,971 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 05:24:33,972 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 05:24:34,025 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 05:24:34,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:41,568 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 05:24:41,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:41,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411416820] [2021-08-27 05:24:41,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411416820] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:24:41,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:24:41,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2021-08-27 05:24:41,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343669571] [2021-08-27 05:24:41,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 05:24:41,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:41,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 05:24:41,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=120, Unknown=2, NotChecked=0, Total=156 [2021-08-27 05:24:41,570 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 05:24:49,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:49,621 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2021-08-27 05:24:49,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:24:49,624 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 05:24:49,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:49,625 INFO L225 Difference]: With dead ends: 114 [2021-08-27 05:24:49,625 INFO L226 Difference]: Without dead ends: 114 [2021-08-27 05:24:49,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 7344.5ms TimeCoverageRelationStatistics Valid=48, Invalid=160, Unknown=2, NotChecked=0, Total=210 [2021-08-27 05:24:49,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-08-27 05:24:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-08-27 05:24:49,627 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 05:24:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 119 transitions. [2021-08-27 05:24:49,628 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 119 transitions. Word has length 45 [2021-08-27 05:24:49,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:49,628 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 119 transitions. [2021-08-27 05:24:49,628 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 05:24:49,629 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 119 transitions. [2021-08-27 05:24:49,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-27 05:24:49,629 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:49,632 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 05:24:49,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-08-27 05:24:49,840 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 05:24:49,841 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 05:24:49,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:49,841 INFO L82 PathProgramCache]: Analyzing trace with hash 984552638, now seen corresponding path program 1 times [2021-08-27 05:24:49,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:49,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455696513] [2021-08-27 05:24:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:24:49,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:49,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:49,842 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 05:24:49,844 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 05:24:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:24:50,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 05:24:50,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:50,639 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 05:24:50,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:52,184 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 05:24:52,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:52,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455696513] [2021-08-27 05:24:52,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455696513] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:24:52,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:24:52,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-08-27 05:24:52,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357659462] [2021-08-27 05:24:52,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 05:24:52,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:52,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 05:24:52,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-08-27 05:24:52,186 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 05:24:52,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:52,967 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2021-08-27 05:24:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 05:24:52,968 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 05:24:52,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:52,968 INFO L225 Difference]: With dead ends: 120 [2021-08-27 05:24:52,968 INFO L226 Difference]: Without dead ends: 115 [2021-08-27 05:24:52,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1254.5ms TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-08-27 05:24:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-27 05:24:52,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-08-27 05:24:52,970 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 05:24:52,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-08-27 05:24:52,971 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 49 [2021-08-27 05:24:52,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:52,971 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-08-27 05:24:52,971 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 05:24:52,971 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-08-27 05:24:52,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-27 05:24:52,971 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:52,972 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 05:24:52,980 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 05:24:53,172 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 05:24:53,172 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 05:24:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:53,172 INFO L82 PathProgramCache]: Analyzing trace with hash -542376120, now seen corresponding path program 2 times [2021-08-27 05:24:53,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:53,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604269640] [2021-08-27 05:24:53,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:24:53,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:53,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:53,174 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 05:24:53,175 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 05:24:53,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:24:53,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:24:53,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 05:24:53,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:54,075 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 05:24:54,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:24:55,764 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 05:24:55,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:24:55,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604269640] [2021-08-27 05:24:55,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604269640] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:24:55,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:24:55,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-08-27 05:24:55,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144648191] [2021-08-27 05:24:55,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-27 05:24:55,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:24:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-27 05:24:55,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-08-27 05:24:55,766 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 05:24:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:24:56,482 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-08-27 05:24:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 05:24:56,483 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 05:24:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:24:56,483 INFO L225 Difference]: With dead ends: 121 [2021-08-27 05:24:56,483 INFO L226 Difference]: Without dead ends: 116 [2021-08-27 05:24:56,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1386.6ms TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-08-27 05:24:56,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-27 05:24:56,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-27 05:24:56,485 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 05:24:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-08-27 05:24:56,486 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 51 [2021-08-27 05:24:56,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:24:56,486 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-08-27 05:24:56,487 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 05:24:56,487 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-08-27 05:24:56,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-27 05:24:56,487 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:24:56,487 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 05:24:56,501 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 05:24:56,696 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 05:24:56,697 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 05:24:56,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:24:56,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1454408318, now seen corresponding path program 3 times [2021-08-27 05:24:56,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:24:56,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616327679] [2021-08-27 05:24:56,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 05:24:56,698 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:24:56,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:24:56,698 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 05:24:56,699 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 05:24:57,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 05:24:57,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:24:57,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 05:24:57,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:24:57,177 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 05:24:57,398 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 05:24:57,552 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 05:24:57,554 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 05:24:57,718 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-08-27 05:24:57,718 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 05:24:57,909 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 05:24:57,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:25:41,876 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 05:25:41,877 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:25:41,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616327679] [2021-08-27 05:25:41,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616327679] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:25:41,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:25:41,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-08-27 05:25:41,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305987637] [2021-08-27 05:25:41,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-27 05:25:41,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:25:41,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-27 05:25:41,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=303, Unknown=14, NotChecked=0, Total=380 [2021-08-27 05:25:41,878 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 05:27:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:27:21,228 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-08-27 05:27:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 05:27:21,229 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 05:27:21,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:27:21,234 INFO L225 Difference]: With dead ends: 129 [2021-08-27 05:27:21,234 INFO L226 Difference]: Without dead ends: 129 [2021-08-27 05:27:21,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 82 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 56949.6ms TimeCoverageRelationStatistics Valid=165, Invalid=744, Unknown=21, NotChecked=0, Total=930 [2021-08-27 05:27:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-08-27 05:27:21,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2021-08-27 05:27:21,238 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 05:27:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 118 transitions. [2021-08-27 05:27:21,238 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 118 transitions. Word has length 53 [2021-08-27 05:27:21,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:27:21,239 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 118 transitions. [2021-08-27 05:27:21,239 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 05:27:21,239 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 118 transitions. [2021-08-27 05:27:21,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-27 05:27:21,239 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:27:21,240 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 05:27:21,250 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 05:27:21,448 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 05:27:21,449 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 05:27:21,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:27:21,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1454408319, now seen corresponding path program 1 times [2021-08-27 05:27:21,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:27:21,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037949112] [2021-08-27 05:27:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:27:21,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:27:21,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:27:21,450 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 05:27:21,452 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 05:27:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:27:21,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 05:27:21,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:27:22,579 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 05:27:22,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:27:24,829 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 05:27:24,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:27:24,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037949112] [2021-08-27 05:27:24,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037949112] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:27:24,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:27:24,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-08-27 05:27:24,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737086203] [2021-08-27 05:27:24,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-27 05:27:24,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:27:24,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-27 05:27:24,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-08-27 05:27:24,831 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 05:27:25,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:27:25,896 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2021-08-27 05:27:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 05:27:25,897 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 05:27:25,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:27:25,897 INFO L225 Difference]: With dead ends: 119 [2021-08-27 05:27:25,898 INFO L226 Difference]: Without dead ends: 114 [2021-08-27 05:27:25,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2106.5ms TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-08-27 05:27:25,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-08-27 05:27:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-08-27 05:27:25,900 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 05:27:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 119 transitions. [2021-08-27 05:27:25,900 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 119 transitions. Word has length 53 [2021-08-27 05:27:25,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:27:25,900 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 119 transitions. [2021-08-27 05:27:25,901 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 05:27:25,901 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 119 transitions. [2021-08-27 05:27:25,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-27 05:27:25,901 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:27:25,901 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 05:27:25,910 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 05:27:26,106 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 05:27:26,107 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 05:27:26,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:27:26,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1274322295, now seen corresponding path program 2 times [2021-08-27 05:27:26,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:27:26,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478544255] [2021-08-27 05:27:26,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 05:27:26,108 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:27:26,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:27:26,109 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 05:27:26,109 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 05:27:26,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 05:27:26,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:27:26,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 05:27:26,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:27:27,333 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 05:27:27,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:27:29,863 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 05:27:29,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:27:29,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478544255] [2021-08-27 05:27:29,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478544255] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:27:29,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:27:29,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-08-27 05:27:29,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512460739] [2021-08-27 05:27:29,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-27 05:27:29,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:27:29,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-27 05:27:29,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-08-27 05:27:29,865 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 05:27:31,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:27:31,556 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2021-08-27 05:27:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 05:27:31,560 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 05:27:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:27:31,560 INFO L225 Difference]: With dead ends: 120 [2021-08-27 05:27:31,560 INFO L226 Difference]: Without dead ends: 115 [2021-08-27 05:27:31,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2333.4ms TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-08-27 05:27:31,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-27 05:27:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-08-27 05:27:31,563 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 05:27:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-08-27 05:27:31,564 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 55 [2021-08-27 05:27:31,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:27:31,564 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-08-27 05:27:31,564 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 05:27:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-08-27 05:27:31,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-27 05:27:31,565 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:27:31,565 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 05:27:31,574 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 05:27:31,773 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 05:27:31,773 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 05:27:31,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:27:31,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1041129535, now seen corresponding path program 3 times [2021-08-27 05:27:31,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:27:31,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850115177] [2021-08-27 05:27:31,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 05:27:31,774 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:27:31,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:27:31,774 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 05:27:31,776 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 05:27:32,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 05:27:32,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 05:27:32,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-27 05:27:32,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:27:32,362 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 05:27:32,414 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 05:27:37,644 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 05:27:37,648 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 05:27:37,947 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-08-27 05:27:37,947 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 05:27:37,988 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 05:27:37,988 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 05:27:40,598 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-27 05:27:40,599 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 05:27:40,913 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 05:27:40,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:27:48,549 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 05:27:50,552 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 05:27:58,678 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 05:28:00,687 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 05:28:17,126 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 05:28:17,161 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 05:28:17,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:28:17,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850115177] [2021-08-27 05:28:17,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850115177] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 05:28:17,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 05:28:17,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-08-27 05:28:17,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123497308] [2021-08-27 05:28:17,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-27 05:28:17,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:28:17,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-27 05:28:17,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=354, Unknown=11, NotChecked=78, Total=506 [2021-08-27 05:28:17,162 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 05:29:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:29:47,127 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2021-08-27 05:29:47,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 05:29:47,135 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 05:29:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:29:47,136 INFO L225 Difference]: With dead ends: 131 [2021-08-27 05:29:47,136 INFO L226 Difference]: Without dead ends: 131 [2021-08-27 05:29:47,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 65936.4ms TimeCoverageRelationStatistics Valid=153, Invalid=898, Unknown=13, NotChecked=126, Total=1190 [2021-08-27 05:29:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-27 05:29:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2021-08-27 05:29:47,139 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 05:29:47,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions. [2021-08-27 05:29:47,139 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 57 [2021-08-27 05:29:47,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:29:47,140 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 136 transitions. [2021-08-27 05:29:47,140 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 05:29:47,140 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions. [2021-08-27 05:29:47,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-27 05:29:47,140 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:29:47,141 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 05:29:47,152 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 05:29:47,352 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 05:29:47,352 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 05:29:47,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:29:47,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1956658940, now seen corresponding path program 1 times [2021-08-27 05:29:47,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:29:47,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365169396] [2021-08-27 05:29:47,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:47,353 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:29:47,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:29:47,356 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 05:29:47,363 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 05:29:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:29:48,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 05:29:48,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:29:48,300 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-08-27 05:29:48,301 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 05:29:48,807 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 05:29:49,150 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 05:29:49,150 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 05:29:49,436 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 05:29:50,508 INFO L354 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2021-08-27 05:29:50,508 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 05:29:50,684 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 05:29:50,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:29:52,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:29:52,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365169396] [2021-08-27 05:29:52,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:29:52,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [582842989] [2021-08-27 05:29:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:29:52,201 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 05:29:52,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 05:29:52,202 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 05:29:52,205 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 05:29:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:29:53,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-27 05:29:53,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:29:53,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-27 05:29:53,751 INFO L354 Elim1Store]: treesize reduction 61, result has 32.2 percent of original size [2021-08-27 05:29:53,751 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 05:29:54,578 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 05:29:54,902 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 05:29:55,862 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 05:29:55,862 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 05:29:56,172 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 05:29:56,172 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 05:29:56,541 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 05:29:58,696 INFO L354 Elim1Store]: treesize reduction 73, result has 25.5 percent of original size [2021-08-27 05:29:58,696 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 05:29:59,558 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 05:29:59,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:30:04,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:30:04,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980303909] [2021-08-27 05:30:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:30:04,765 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 05:30:04,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:30:04,766 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 05:30:04,766 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 05:30:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:30:05,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 05:30:05,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:30:05,793 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-08-27 05:30:05,793 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 05:30:06,172 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 05:30:06,457 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-27 05:30:06,458 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 05:30:06,646 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 05:30:07,307 INFO L354 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2021-08-27 05:30:07,308 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 05:30:07,480 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 05:30:07,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:30:09,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 05:30:09,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:30:09,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 05:30:09,560 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 05:30:09,560 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 05:30:09,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION [2021-08-27 05:30:09,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION [2021-08-27 05:30:09,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION [2021-08-27 05:30:09,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION [2021-08-27 05:30:09,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION [2021-08-27 05:30:09,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION [2021-08-27 05:30:09,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION [2021-08-27 05:30:09,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION [2021-08-27 05:30:09,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION [2021-08-27 05:30:09,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION [2021-08-27 05:30:09,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION [2021-08-27 05:30:09,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION [2021-08-27 05:30:09,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr6REQUIRES_VIOLATION [2021-08-27 05:30:09,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr7REQUIRES_VIOLATION [2021-08-27 05:30:09,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr8REQUIRES_VIOLATION [2021-08-27 05:30:09,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr9REQUIRES_VIOLATION [2021-08-27 05:30:09,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION [2021-08-27 05:30:09,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION [2021-08-27 05:30:09,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:30:09,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:30:09,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:30:09,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:30:09,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:30:09,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:30:09,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 05:30:09,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 05:30:09,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 05:30:09,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 05:30:09,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:30:09,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:30:09,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:30:09,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 05:30:09,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 05:30:09,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 05:30:09,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 05:30:09,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:30:09,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION [2021-08-27 05:30:09,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION [2021-08-27 05:30:09,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:30:09,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:30:09,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:30:09,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5REQUIRES_VIOLATION [2021-08-27 05:30:09,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6REQUIRES_VIOLATION [2021-08-27 05:30:09,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:30:09,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:30:09,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:30:09,581 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 05:30:09,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-08-27 05:30:10,002 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 05:30:10,180 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 05:30:10,184 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:30:10,188 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:30:10,188 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-08-27 05:30:10,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:30:10 BoogieIcfgContainer [2021-08-27 05:30:10,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:30:10,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:30:10,194 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:30:10,194 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:30:10,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:24:20" (3/4) ... [2021-08-27 05:30:10,196 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:30:10,196 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:30:10,196 INFO L168 Benchmark]: Toolchain (without parser) took 351293.97 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 29.8 MB in the beginning and 38.4 MB in the end (delta: -8.6 MB). Peak memory consumption was 57.3 MB. Max. memory is 16.1 GB. [2021-08-27 05:30:10,197 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.6 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:30:10,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.44 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.6 MB in the beginning and 40.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-08-27 05:30:10,197 INFO L168 Benchmark]: Boogie Preprocessor took 93.39 ms. Allocated memory is still 67.1 MB. Free memory was 40.3 MB in the beginning and 36.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:30:10,197 INFO L168 Benchmark]: RCFGBuilder took 944.61 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 36.4 MB in the beginning and 41.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:30:10,197 INFO L168 Benchmark]: TraceAbstraction took 349831.76 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 41.2 MB in the beginning and 38.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. [2021-08-27 05:30:10,198 INFO L168 Benchmark]: Witness Printer took 2.20 ms. Allocated memory is still 119.5 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:30:10,199 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.6 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 416.44 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.6 MB in the beginning and 40.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.39 ms. Allocated memory is still 67.1 MB. Free memory was 40.3 MB in the beginning and 36.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 944.61 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 36.4 MB in the beginning and 41.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 349831.76 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 41.2 MB in the beginning and 38.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. * Witness Printer took 2.20 ms. Allocated memory is still 119.5 MB. Free memory is still 38.4 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: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 669]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 145 locations, 46 error locations. Started 1 CEGAR loops. OverallTime: 349787.2ms, OverallIterations: 16, TraceHistogramMax: 16, EmptinessCheckTime: 16.4ms, AutomataDifference: 204145.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1528 SDtfs, 674 SDslu, 9191 SDs, 0 SdLazy, 3449 SolverSat, 193 SolverUnsat, 60 SolverUnknown, 0 SolverNotchecked, 151626.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1213 GetRequests, 975 SyntacticMatches, 24 SemanticMatches, 214 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 140027.1ms 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: 80.1ms AutomataMinimizationTime, 15 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 227.7ms SsaConstructionTime, 991.1ms SatisfiabilityAnalysisTime, 114426.9ms 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 05:30:10,298 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...