./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-memsafety/fillarray.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f4b24e32 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/pthread-memsafety/fillarray.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 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 07:06:51,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 07:06:51,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 07:06:51,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 07:06:51,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 07:06:51,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 07:06:51,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 07:06:51,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 07:06:51,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 07:06:51,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 07:06:51,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 07:06:51,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 07:06:51,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 07:06:51,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 07:06:51,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 07:06:51,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 07:06:51,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 07:06:51,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 07:06:51,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 07:06:51,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 07:06:51,290 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 07:06:51,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 07:06:51,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 07:06:51,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 07:06:51,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 07:06:51,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 07:06:51,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 07:06:51,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 07:06:51,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 07:06:51,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 07:06:51,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 07:06:51,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 07:06:51,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 07:06:51,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 07:06:51,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 07:06:51,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 07:06:51,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 07:06:51,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 07:06:51,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 07:06:51,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 07:06:51,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 07:06:51,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 07:06:51,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-14 07:06:51,352 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 07:06:51,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 07:06:51,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 07:06:51,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 07:06:51,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 07:06:51,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 07:06:51,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 07:06:51,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 07:06:51,355 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 07:06:51,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 07:06:51,356 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 07:06:51,356 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 07:06:51,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 07:06:51,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 07:06:51,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 07:06:51,357 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 07:06:51,357 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 07:06:51,358 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 07:06:51,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 07:06:51,358 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 07:06:51,358 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 07:06:51,358 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 07:06:51,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 07:06:51,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 07:06:51,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 07:06:51,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 07:06:51,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 07:06:51,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 07:06:51,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 07:06:51,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 07:06:51,360 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2022-07-14 07:06:51,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 07:06:51,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 07:06:51,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 07:06:51,712 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 07:06:51,713 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 07:06:51,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2022-07-14 07:06:51,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d32c694/91cded6d4f0749b1a5e4e9c6c7c12508/FLAG0df0d6fd2 [2022-07-14 07:06:52,252 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 07:06:52,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2022-07-14 07:06:52,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d32c694/91cded6d4f0749b1a5e4e9c6c7c12508/FLAG0df0d6fd2 [2022-07-14 07:06:52,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d32c694/91cded6d4f0749b1a5e4e9c6c7c12508 [2022-07-14 07:06:52,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 07:06:52,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 07:06:52,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 07:06:52,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 07:06:52,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 07:06:52,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 07:06:52" (1/1) ... [2022-07-14 07:06:52,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61daef47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:52, skipping insertion in model container [2022-07-14 07:06:52,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 07:06:52" (1/1) ... [2022-07-14 07:06:52,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 07:06:52,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 07:06:52,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 07:06:52,745 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-14 07:06:52,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2cc8ad02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:52, skipping insertion in model container [2022-07-14 07:06:52,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 07:06:52,747 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-14 07:06:52,750 INFO L158 Benchmark]: Toolchain (without parser) took 456.21ms. Allocated memory is still 92.3MB. Free memory was 57.5MB in the beginning and 65.5MB in the end (delta: -8.0MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-07-14 07:06:52,751 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 92.3MB. Free memory was 71.9MB in the beginning and 71.9MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 07:06:52,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.86ms. Allocated memory is still 92.3MB. Free memory was 57.3MB in the beginning and 65.5MB in the end (delta: -8.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-07-14 07:06:52,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 92.3MB. Free memory was 71.9MB in the beginning and 71.9MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 453.86ms. Allocated memory is still 92.3MB. Free memory was 57.3MB in the beginning and 65.5MB in the end (delta: -8.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1041]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/pthread-memsafety/fillarray.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 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 07:06:54,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 07:06:54,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 07:06:54,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 07:06:54,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 07:06:54,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 07:06:54,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 07:06:54,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 07:06:54,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 07:06:54,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 07:06:54,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 07:06:54,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 07:06:54,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 07:06:54,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 07:06:54,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 07:06:54,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 07:06:54,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 07:06:54,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 07:06:54,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 07:06:54,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 07:06:54,726 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 07:06:54,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 07:06:54,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 07:06:54,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 07:06:54,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 07:06:54,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 07:06:54,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 07:06:54,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 07:06:54,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 07:06:54,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 07:06:54,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 07:06:54,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 07:06:54,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 07:06:54,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 07:06:54,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 07:06:54,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 07:06:54,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 07:06:54,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 07:06:54,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 07:06:54,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 07:06:54,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 07:06:54,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 07:06:54,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-14 07:06:54,791 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 07:06:54,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 07:06:54,792 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 07:06:54,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 07:06:54,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 07:06:54,793 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 07:06:54,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 07:06:54,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 07:06:54,794 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 07:06:54,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 07:06:54,796 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 07:06:54,796 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 07:06:54,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 07:06:54,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 07:06:54,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 07:06:54,804 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 07:06:54,804 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 07:06:54,805 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 07:06:54,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 07:06:54,805 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 07:06:54,805 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 07:06:54,805 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 07:06:54,806 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 07:06:54,806 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 07:06:54,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 07:06:54,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 07:06:54,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 07:06:54,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 07:06:54,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 07:06:54,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 07:06:54,808 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 07:06:54,808 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 07:06:54,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 07:06:54,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2022-07-14 07:06:55,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 07:06:55,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 07:06:55,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 07:06:55,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 07:06:55,136 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 07:06:55,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2022-07-14 07:06:55,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b3ec2b56/f193aefb232d442e956a26ec459241c2/FLAGe467e3175 [2022-07-14 07:06:55,772 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 07:06:55,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2022-07-14 07:06:55,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b3ec2b56/f193aefb232d442e956a26ec459241c2/FLAGe467e3175 [2022-07-14 07:06:56,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b3ec2b56/f193aefb232d442e956a26ec459241c2 [2022-07-14 07:06:56,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 07:06:56,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 07:06:56,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 07:06:56,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 07:06:56,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 07:06:56,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 07:06:56" (1/1) ... [2022-07-14 07:06:56,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137faf4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56, skipping insertion in model container [2022-07-14 07:06:56,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 07:06:56" (1/1) ... [2022-07-14 07:06:56,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 07:06:56,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 07:06:56,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 07:06:56,722 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 07:06:56,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 07:06:56,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 07:06:56,775 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 07:06:56,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 07:06:56,874 INFO L208 MainTranslator]: Completed translation [2022-07-14 07:06:56,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56 WrapperNode [2022-07-14 07:06:56,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 07:06:56,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 07:06:56,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 07:06:56,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 07:06:56,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56" (1/1) ... [2022-07-14 07:06:56,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56" (1/1) ... [2022-07-14 07:06:56,925 INFO L137 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2022-07-14 07:06:56,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 07:06:56,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 07:06:56,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 07:06:56,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 07:06:56,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56" (1/1) ... [2022-07-14 07:06:56,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56" (1/1) ... [2022-07-14 07:06:56,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56" (1/1) ... [2022-07-14 07:06:56,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56" (1/1) ... [2022-07-14 07:06:56,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56" (1/1) ... [2022-07-14 07:06:56,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56" (1/1) ... [2022-07-14 07:06:56,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56" (1/1) ... [2022-07-14 07:06:56,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 07:06:56,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 07:06:56,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 07:06:56,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 07:06:56,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56" (1/1) ... [2022-07-14 07:06:56,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 07:06:56,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 07:06:56,984 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) [2022-07-14 07:06:56,991 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 [2022-07-14 07:06:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-07-14 07:06:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-07-14 07:06:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-07-14 07:06:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-07-14 07:06:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 07:06:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 07:06:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 07:06:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 07:06:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 07:06:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 07:06:57,022 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-14 07:06:57,155 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 07:06:57,157 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 07:06:57,520 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 07:06:57,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 07:06:57,526 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-14 07:06:57,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:06:57 BoogieIcfgContainer [2022-07-14 07:06:57,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 07:06:57,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 07:06:57,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 07:06:57,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 07:06:57,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 07:06:56" (1/3) ... [2022-07-14 07:06:57,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c93337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 07:06:57, skipping insertion in model container [2022-07-14 07:06:57,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:56" (2/3) ... [2022-07-14 07:06:57,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c93337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 07:06:57, skipping insertion in model container [2022-07-14 07:06:57,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:06:57" (3/3) ... [2022-07-14 07:06:57,535 INFO L111 eAbstractionObserver]: Analyzing ICFG fillarray.i [2022-07-14 07:06:57,548 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 07:06:57,548 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-07-14 07:06:57,548 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-14 07:06:57,627 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-14 07:06:57,656 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 07:06:57,665 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 90 transitions, 190 flow [2022-07-14 07:06:57,667 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 90 transitions, 190 flow [2022-07-14 07:06:57,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 90 transitions, 190 flow [2022-07-14 07:06:57,703 INFO L129 PetriNetUnfolder]: 4/94 cut-off events. [2022-07-14 07:06:57,703 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-14 07:06:57,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 94 events. 4/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2022-07-14 07:06:57,711 INFO L116 LiptonReduction]: Number of co-enabled transitions 1586 [2022-07-14 07:07:04,708 INFO L131 LiptonReduction]: Checked pairs total: 4267 [2022-07-14 07:07:04,709 INFO L133 LiptonReduction]: Total number of compositions: 82 [2022-07-14 07:07:04,716 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 80 flow [2022-07-14 07:07:04,772 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 613 states, 560 states have (on average 3.0910714285714285) internal successors, (1731), 612 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:04,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 07:07:04,801 INFO L357 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, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5e34235f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4dcb3919 [2022-07-14 07:07:04,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-07-14 07:07:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 613 states, 560 states have (on average 3.0910714285714285) internal successors, (1731), 612 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:04,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-07-14 07:07:04,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 07:07:04,813 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-07-14 07:07:04,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-14 07:07:04,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 07:07:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash 339, now seen corresponding path program 1 times [2022-07-14 07:07:04,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 07:07:04,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373411496] [2022-07-14 07:07:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 07:07:04,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 07:07:04,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 07:07:04,843 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) [2022-07-14 07:07:04,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-14 07:07:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 07:07:04,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-14 07:07:04,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 07:07:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 07:07:04,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 07:07:04,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 07:07:04,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373411496] [2022-07-14 07:07:04,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373411496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 07:07:04,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 07:07:04,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-07-14 07:07:04,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619663680] [2022-07-14 07:07:04,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 07:07:04,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-14 07:07:04,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 07:07:04,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 07:07:04,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 07:07:04,972 INFO L87 Difference]: Start difference. First operand has 613 states, 560 states have (on average 3.0910714285714285) internal successors, (1731), 612 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:05,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 07:07:05,119 INFO L93 Difference]: Finished difference Result 611 states and 1729 transitions. [2022-07-14 07:07:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 07:07:05,121 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-07-14 07:07:05,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 07:07:05,161 INFO L225 Difference]: With dead ends: 611 [2022-07-14 07:07:05,162 INFO L226 Difference]: Without dead ends: 611 [2022-07-14 07:07:05,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 07:07:05,165 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 07:07:05,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 07:07:05,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-07-14 07:07:05,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2022-07-14 07:07:05,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 560 states have (on average 3.0875) internal successors, (1729), 610 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1729 transitions. [2022-07-14 07:07:05,345 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1729 transitions. Word has length 1 [2022-07-14 07:07:05,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 07:07:05,346 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 1729 transitions. [2022-07-14 07:07:05,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:05,348 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1729 transitions. [2022-07-14 07:07:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-14 07:07:05,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 07:07:05,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-14 07:07:05,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-14 07:07:05,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 07:07:05,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-14 07:07:05,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 07:07:05,558 INFO L85 PathProgramCache]: Analyzing trace with hash 10627, now seen corresponding path program 1 times [2022-07-14 07:07:05,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 07:07:05,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548075430] [2022-07-14 07:07:05,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 07:07:05,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 07:07:05,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 07:07:05,560 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) [2022-07-14 07:07:05,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-14 07:07:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 07:07:05,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 07:07:05,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 07:07:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 07:07:05,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 07:07:05,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 07:07:05,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548075430] [2022-07-14 07:07:05,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548075430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 07:07:05,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 07:07:05,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 07:07:05,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009175747] [2022-07-14 07:07:05,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 07:07:05,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 07:07:05,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 07:07:05,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 07:07:05,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:05,640 INFO L87 Difference]: Start difference. First operand 611 states and 1729 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:05,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 07:07:05,823 INFO L93 Difference]: Finished difference Result 610 states and 1728 transitions. [2022-07-14 07:07:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 07:07:05,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-07-14 07:07:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 07:07:05,830 INFO L225 Difference]: With dead ends: 610 [2022-07-14 07:07:05,830 INFO L226 Difference]: Without dead ends: 609 [2022-07-14 07:07:05,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:05,837 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 07:07:05,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 21 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 07:07:05,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-07-14 07:07:05,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2022-07-14 07:07:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 559 states have (on average 3.0894454382826475) internal successors, (1727), 608 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:05,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1727 transitions. [2022-07-14 07:07:05,886 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1727 transitions. Word has length 2 [2022-07-14 07:07:05,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 07:07:05,887 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 1727 transitions. [2022-07-14 07:07:05,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:05,887 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1727 transitions. [2022-07-14 07:07:05,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 07:07:05,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 07:07:05,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 07:07:05,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-14 07:07:06,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 07:07:06,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-14 07:07:06,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 07:07:06,104 INFO L85 PathProgramCache]: Analyzing trace with hash 334037, now seen corresponding path program 1 times [2022-07-14 07:07:06,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 07:07:06,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344965110] [2022-07-14 07:07:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 07:07:06,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 07:07:06,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 07:07:06,107 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) [2022-07-14 07:07:06,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-14 07:07:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 07:07:06,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 07:07:06,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 07:07:06,266 INFO L356 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2022-07-14 07:07:06,267 INFO L390 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-07-14 07:07:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 07:07:06,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 07:07:06,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 07:07:06,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344965110] [2022-07-14 07:07:06,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344965110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 07:07:06,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 07:07:06,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 07:07:06,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737485521] [2022-07-14 07:07:06,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 07:07:06,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 07:07:06,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 07:07:06,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 07:07:06,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:06,288 INFO L87 Difference]: Start difference. First operand 609 states and 1727 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:06,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 07:07:06,396 INFO L93 Difference]: Finished difference Result 601 states and 1711 transitions. [2022-07-14 07:07:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 07:07:06,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-07-14 07:07:06,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 07:07:06,401 INFO L225 Difference]: With dead ends: 601 [2022-07-14 07:07:06,402 INFO L226 Difference]: Without dead ends: 601 [2022-07-14 07:07:06,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:06,403 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 07:07:06,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 13 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 07:07:06,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-07-14 07:07:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2022-07-14 07:07:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 554 states have (on average 3.088447653429603) internal successors, (1711), 600 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1711 transitions. [2022-07-14 07:07:06,436 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1711 transitions. Word has length 3 [2022-07-14 07:07:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 07:07:06,437 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 1711 transitions. [2022-07-14 07:07:06,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1711 transitions. [2022-07-14 07:07:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 07:07:06,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 07:07:06,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 07:07:06,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-14 07:07:06,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 07:07:06,646 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-14 07:07:06,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 07:07:06,647 INFO L85 PathProgramCache]: Analyzing trace with hash 334039, now seen corresponding path program 1 times [2022-07-14 07:07:06,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 07:07:06,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488231543] [2022-07-14 07:07:06,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 07:07:06,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 07:07:06,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 07:07:06,650 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) [2022-07-14 07:07:06,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-14 07:07:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 07:07:06,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 07:07:06,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 07:07:06,767 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-07-14 07:07:06,768 INFO L390 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-07-14 07:07:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 07:07:06,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 07:07:06,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 07:07:06,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488231543] [2022-07-14 07:07:06,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488231543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 07:07:06,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 07:07:06,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 07:07:06,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536625506] [2022-07-14 07:07:06,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 07:07:06,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 07:07:06,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 07:07:06,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 07:07:06,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:06,795 INFO L87 Difference]: Start difference. First operand 601 states and 1711 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:06,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 07:07:06,920 INFO L93 Difference]: Finished difference Result 593 states and 1695 transitions. [2022-07-14 07:07:06,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 07:07:06,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-07-14 07:07:06,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 07:07:06,926 INFO L225 Difference]: With dead ends: 593 [2022-07-14 07:07:06,927 INFO L226 Difference]: Without dead ends: 593 [2022-07-14 07:07:06,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:06,928 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 07:07:06,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 14 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 07:07:06,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-07-14 07:07:06,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2022-07-14 07:07:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 549 states have (on average 3.087431693989071) internal successors, (1695), 592 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:06,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1695 transitions. [2022-07-14 07:07:06,952 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1695 transitions. Word has length 3 [2022-07-14 07:07:06,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 07:07:06,952 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 1695 transitions. [2022-07-14 07:07:06,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1695 transitions. [2022-07-14 07:07:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 07:07:06,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 07:07:06,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 07:07:06,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-14 07:07:07,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 07:07:07,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-14 07:07:07,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 07:07:07,163 INFO L85 PathProgramCache]: Analyzing trace with hash 321017885, now seen corresponding path program 1 times [2022-07-14 07:07:07,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 07:07:07,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763916879] [2022-07-14 07:07:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 07:07:07,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 07:07:07,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 07:07:07,165 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) [2022-07-14 07:07:07,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-14 07:07:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 07:07:07,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 07:07:07,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 07:07:07,293 INFO L356 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2022-07-14 07:07:07,293 INFO L390 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 3 case distinctions, treesize of input 24 treesize of output 30 [2022-07-14 07:07:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 07:07:07,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 07:07:07,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 07:07:07,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763916879] [2022-07-14 07:07:07,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763916879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 07:07:07,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 07:07:07,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 07:07:07,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951279202] [2022-07-14 07:07:07,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 07:07:07,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 07:07:07,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 07:07:07,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 07:07:07,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:07,376 INFO L87 Difference]: Start difference. First operand 593 states and 1695 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:07,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 07:07:07,443 INFO L93 Difference]: Finished difference Result 592 states and 1692 transitions. [2022-07-14 07:07:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 07:07:07,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 07:07:07,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 07:07:07,446 INFO L225 Difference]: With dead ends: 592 [2022-07-14 07:07:07,446 INFO L226 Difference]: Without dead ends: 592 [2022-07-14 07:07:07,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:07,447 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 07:07:07,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-07-14 07:07:07,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-07-14 07:07:07,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2022-07-14 07:07:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 548 states have (on average 3.0875912408759123) internal successors, (1692), 591 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:07,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1692 transitions. [2022-07-14 07:07:07,470 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1692 transitions. Word has length 5 [2022-07-14 07:07:07,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 07:07:07,470 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 1692 transitions. [2022-07-14 07:07:07,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1692 transitions. [2022-07-14 07:07:07,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 07:07:07,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 07:07:07,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 07:07:07,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-14 07:07:07,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 07:07:07,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-14 07:07:07,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 07:07:07,682 INFO L85 PathProgramCache]: Analyzing trace with hash 321017871, now seen corresponding path program 1 times [2022-07-14 07:07:07,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 07:07:07,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788273547] [2022-07-14 07:07:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 07:07:07,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 07:07:07,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 07:07:07,683 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) [2022-07-14 07:07:07,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-14 07:07:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 07:07:07,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 07:07:07,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 07:07:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 07:07:07,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 07:07:07,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 07:07:07,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788273547] [2022-07-14 07:07:07,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788273547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 07:07:07,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 07:07:07,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 07:07:07,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249647677] [2022-07-14 07:07:07,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 07:07:07,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 07:07:07,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 07:07:07,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 07:07:07,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:07,782 INFO L87 Difference]: Start difference. First operand 592 states and 1692 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:07,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 07:07:07,843 INFO L93 Difference]: Finished difference Result 528 states and 1500 transitions. [2022-07-14 07:07:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 07:07:07,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 07:07:07,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 07:07:07,849 INFO L225 Difference]: With dead ends: 528 [2022-07-14 07:07:07,849 INFO L226 Difference]: Without dead ends: 528 [2022-07-14 07:07:07,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:07,852 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 07:07:07,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 9 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 07:07:07,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-14 07:07:07,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-07-14 07:07:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 493 states have (on average 3.0425963488843815) internal successors, (1500), 527 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1500 transitions. [2022-07-14 07:07:07,867 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1500 transitions. Word has length 5 [2022-07-14 07:07:07,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 07:07:07,868 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 1500 transitions. [2022-07-14 07:07:07,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:07,868 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1500 transitions. [2022-07-14 07:07:07,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 07:07:07,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 07:07:07,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 07:07:07,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-14 07:07:08,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 07:07:08,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-14 07:07:08,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 07:07:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash 321017872, now seen corresponding path program 1 times [2022-07-14 07:07:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 07:07:08,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905455657] [2022-07-14 07:07:08,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 07:07:08,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 07:07:08,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 07:07:08,087 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) [2022-07-14 07:07:08,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-14 07:07:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 07:07:08,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 07:07:08,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 07:07:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 07:07:08,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 07:07:08,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 07:07:08,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905455657] [2022-07-14 07:07:08,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905455657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 07:07:08,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 07:07:08,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 07:07:08,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533471670] [2022-07-14 07:07:08,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 07:07:08,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 07:07:08,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 07:07:08,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 07:07:08,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:08,185 INFO L87 Difference]: Start difference. First operand 528 states and 1500 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:08,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 07:07:08,242 INFO L93 Difference]: Finished difference Result 464 states and 1308 transitions. [2022-07-14 07:07:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 07:07:08,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 07:07:08,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 07:07:08,246 INFO L225 Difference]: With dead ends: 464 [2022-07-14 07:07:08,246 INFO L226 Difference]: Without dead ends: 464 [2022-07-14 07:07:08,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:08,247 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 07:07:08,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 9 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 07:07:08,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-07-14 07:07:08,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2022-07-14 07:07:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 438 states have (on average 2.9863013698630136) internal successors, (1308), 463 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1308 transitions. [2022-07-14 07:07:08,263 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1308 transitions. Word has length 5 [2022-07-14 07:07:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 07:07:08,263 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 1308 transitions. [2022-07-14 07:07:08,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1308 transitions. [2022-07-14 07:07:08,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 07:07:08,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 07:07:08,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 07:07:08,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-14 07:07:08,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 07:07:08,475 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-14 07:07:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 07:07:08,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1361619026, now seen corresponding path program 1 times [2022-07-14 07:07:08,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 07:07:08,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212719384] [2022-07-14 07:07:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 07:07:08,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 07:07:08,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 07:07:08,477 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) [2022-07-14 07:07:08,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-14 07:07:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 07:07:08,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 07:07:08,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 07:07:08,599 INFO L356 Elim1Store]: treesize reduction 35, result has 36.4 percent of original size [2022-07-14 07:07:08,599 INFO L390 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 3 case distinctions, treesize of input 24 treesize of output 34 [2022-07-14 07:07:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 07:07:08,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 07:07:08,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 07:07:08,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212719384] [2022-07-14 07:07:08,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212719384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 07:07:08,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 07:07:08,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 07:07:08,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123311535] [2022-07-14 07:07:08,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 07:07:08,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 07:07:08,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 07:07:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 07:07:08,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:08,646 INFO L87 Difference]: Start difference. First operand 464 states and 1308 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:08,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 07:07:08,735 INFO L93 Difference]: Finished difference Result 401 states and 1119 transitions. [2022-07-14 07:07:08,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 07:07:08,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-14 07:07:08,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 07:07:08,739 INFO L225 Difference]: With dead ends: 401 [2022-07-14 07:07:08,739 INFO L226 Difference]: Without dead ends: 401 [2022-07-14 07:07:08,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 07:07:08,740 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 07:07:08,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 13 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 07:07:08,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-07-14 07:07:08,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-07-14 07:07:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 384 states have (on average 2.9140625) internal successors, (1119), 400 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1119 transitions. [2022-07-14 07:07:08,756 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1119 transitions. Word has length 6 [2022-07-14 07:07:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 07:07:08,756 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 1119 transitions. [2022-07-14 07:07:08,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 07:07:08,757 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1119 transitions. [2022-07-14 07:07:08,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-14 07:07:08,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 07:07:08,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 07:07:08,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-14 07:07:08,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 07:07:08,972 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-14 07:07:08,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 07:07:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash -766144858, now seen corresponding path program 1 times [2022-07-14 07:07:08,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 07:07:08,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314921745] [2022-07-14 07:07:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 07:07:08,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 07:07:08,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 07:07:08,974 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) [2022-07-14 07:07:08,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-14 07:07:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 07:07:09,052 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 07:07:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 07:07:09,106 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-14 07:07:09,107 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 07:07:09,108 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2022-07-14 07:07:09,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2022-07-14 07:07:09,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2022-07-14 07:07:09,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2022-07-14 07:07:09,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2022-07-14 07:07:09,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2022-07-14 07:07:09,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2022-07-14 07:07:09,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2022-07-14 07:07:09,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2022-07-14 07:07:09,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-07-14 07:07:09,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2022-07-14 07:07:09,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2022-07-14 07:07:09,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2022-07-14 07:07:09,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2022-07-14 07:07:09,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2022-07-14 07:07:09,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2022-07-14 07:07:09,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2022-07-14 07:07:09,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2022-07-14 07:07:09,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-14 07:07:09,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 07:07:09,332 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 07:07:09,337 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-14 07:07:09,337 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-14 07:07:09,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 07:07:09 BasicIcfg [2022-07-14 07:07:09,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-14 07:07:09,365 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 07:07:09,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 07:07:09,365 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 07:07:09,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:06:57" (3/4) ... [2022-07-14 07:07:09,367 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-14 07:07:09,411 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 07:07:09,411 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 07:07:09,412 INFO L158 Benchmark]: Toolchain (without parser) took 13224.33ms. Allocated memory was 50.3MB in the beginning and 75.5MB in the end (delta: 25.2MB). Free memory was 24.9MB in the beginning and 31.9MB in the end (delta: -7.0MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2022-07-14 07:07:09,412 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 50.3MB. Free memory was 32.4MB in the beginning and 32.3MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 07:07:09,413 INFO L158 Benchmark]: CACSL2BoogieTranslator took 684.27ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 24.8MB in the beginning and 39.9MB in the end (delta: -15.1MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2022-07-14 07:07:09,413 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.47ms. Allocated memory is still 62.9MB. Free memory was 39.9MB in the beginning and 37.5MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-14 07:07:09,413 INFO L158 Benchmark]: Boogie Preprocessor took 30.18ms. Allocated memory is still 62.9MB. Free memory was 37.5MB in the beginning and 35.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 07:07:09,414 INFO L158 Benchmark]: RCFGBuilder took 570.66ms. Allocated memory is still 62.9MB. Free memory was 35.7MB in the beginning and 40.9MB in the end (delta: -5.1MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2022-07-14 07:07:09,414 INFO L158 Benchmark]: TraceAbstraction took 11834.68ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 40.2MB in the beginning and 34.6MB in the end (delta: 5.6MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2022-07-14 07:07:09,415 INFO L158 Benchmark]: Witness Printer took 46.72ms. Allocated memory is still 75.5MB. Free memory was 34.6MB in the beginning and 31.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 07:07:09,416 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 50.3MB. Free memory was 32.4MB in the beginning and 32.3MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 684.27ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 24.8MB in the beginning and 39.9MB in the end (delta: -15.1MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.47ms. Allocated memory is still 62.9MB. Free memory was 39.9MB in the beginning and 37.5MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.18ms. Allocated memory is still 62.9MB. Free memory was 37.5MB in the beginning and 35.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 570.66ms. Allocated memory is still 62.9MB. Free memory was 35.7MB in the beginning and 40.9MB in the end (delta: -5.1MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * TraceAbstraction took 11834.68ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 40.2MB in the beginning and 34.6MB in the end (delta: 5.6MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * Witness Printer took 46.72ms. Allocated memory is still 75.5MB. Free memory was 34.6MB in the beginning and 31.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.0s, 92 PlacesBefore, 39 PlacesAfterwards, 90 TransitionsBefore, 35 TransitionsAfterwards, 1586 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4267 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1997, positive: 1827, positive conditional: 0, positive unconditional: 1827, negative: 170, negative conditional: 0, negative unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 917, positive: 879, positive conditional: 0, positive unconditional: 879, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 917, positive: 873, positive conditional: 0, positive unconditional: 873, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 365, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 335, negative conditional: 0, negative unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1997, positive: 948, positive conditional: 0, positive unconditional: 948, negative: 132, negative conditional: 0, negative unconditional: 132, unknown: 917, unknown conditional: 0, unknown unconditional: 917] , Statistics on independence cache: Total cache size (in pairs): 168, Positive cache size: 148, Positive conditional cache size: 0, Positive unconditional cache size: 148, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; [L1038] 0 int ind; [L1039] 0 int j = 2, i = 1; [L1057] 0 size = __VERIFIER_nondet_int() [L1058] COND FALSE 0 !(size < 1 || size > 20) [L1061] 0 int *a = (int *)malloc(size); [L1062] 0 pthread_t id1, id2; [L1063] 0 ind = 0 [L1064] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [\old(argc)=5, a={1:0}, arg={1:0}, argc=5, argv={9:6}, argv={9:6}, i=1, id1={15:0}, id2={7:0}, ind=0, j=2, pthread_create(&id1, ((void *)0), t1, a)=0, size=2] [L1041] 1 int *a = (int *)arg; VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2] [L1042] COND TRUE 1 ind < size - 1 VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2] [L1043] 1 ++ind [L1044] 1 a[ind] = i - UnprovableResult [Line: 1056]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 11.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 121 mSDsluCounter, 103 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 21 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 226 IncrementalHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 72 mSDtfsCounter, 226 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=613occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 22 ConstructedInterpolants, 4 QuantifiedInterpolants, 188 SizeOfPredicates, 8 NumberOfNonLiveVariables, 414 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-14 07:07:09,459 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)