./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 e19ca921 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-dev-e19ca92 [2021-12-22 16:48:21,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 16:48:21,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 16:48:21,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 16:48:21,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 16:48:21,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 16:48:21,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 16:48:21,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 16:48:21,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 16:48:21,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 16:48:21,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 16:48:21,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 16:48:21,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 16:48:21,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 16:48:21,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 16:48:21,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 16:48:21,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 16:48:21,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 16:48:21,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 16:48:21,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 16:48:21,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 16:48:21,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 16:48:21,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 16:48:21,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 16:48:21,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 16:48:21,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 16:48:21,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 16:48:21,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 16:48:21,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 16:48:21,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 16:48:21,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 16:48:21,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 16:48:21,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 16:48:21,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 16:48:21,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 16:48:21,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 16:48:21,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 16:48:21,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 16:48:21,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 16:48:21,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 16:48:21,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 16:48:21,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 16:48:21,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 16:48:21,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 16:48:21,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 16:48:21,118 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 16:48:21,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 16:48:21,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 16:48:21,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 16:48:21,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 16:48:21,120 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 16:48:21,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 16:48:21,121 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 16:48:21,121 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 16:48:21,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 16:48:21,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 16:48:21,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 16:48:21,122 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 16:48:21,122 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 16:48:21,122 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 16:48:21,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 16:48:21,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 16:48:21,122 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 16:48:21,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 16:48:21,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 16:48:21,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 16:48:21,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 16:48:21,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:48:21,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 16:48:21,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 16:48:21,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 16:48:21,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 16:48:21,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 16:48:21,124 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2021-12-22 16:48:21,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 16:48:21,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 16:48:21,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 16:48:21,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 16:48:21,348 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 16:48:21,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2021-12-22 16:48:21,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c4e049f/393df29dd0214bb7b47dcd24836fb252/FLAG537710023 [2021-12-22 16:48:21,816 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 16:48:21,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2021-12-22 16:48:21,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c4e049f/393df29dd0214bb7b47dcd24836fb252/FLAG537710023 [2021-12-22 16:48:21,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c4e049f/393df29dd0214bb7b47dcd24836fb252 [2021-12-22 16:48:21,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 16:48:21,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 16:48:21,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 16:48:21,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 16:48:21,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 16:48:21,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:48:21" (1/1) ... [2021-12-22 16:48:21,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a23fb95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:21, skipping insertion in model container [2021-12-22 16:48:21,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:48:21" (1/1) ... [2021-12-22 16:48:21,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 16:48:21,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:48:22,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:48:22,383 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-22 16:48:22,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@658965fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:22, skipping insertion in model container [2021-12-22 16:48:22,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 16:48:22,384 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-22 16:48:22,386 INFO L158 Benchmark]: Toolchain (without parser) took 538.85ms. Allocated memory is still 102.8MB. Free memory was 74.9MB in the beginning and 75.5MB in the end (delta: -608.5kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 16:48:22,387 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory was 61.7MB in the beginning and 61.6MB in the end (delta: 90.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 16:48:22,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.78ms. Allocated memory is still 102.8MB. Free memory was 74.7MB in the beginning and 75.5MB in the end (delta: -872.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 16:48:22,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory was 61.7MB in the beginning and 61.6MB in the end (delta: 90.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 536.78ms. Allocated memory is still 102.8MB. Free memory was 74.7MB in the beginning and 75.5MB in the end (delta: -872.0kB). Peak memory consumption was 8.4MB. 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 where the value type is smaller than the cast-to type 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-dev-e19ca92 [2021-12-22 16:48:23,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 16:48:23,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 16:48:24,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 16:48:24,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 16:48:24,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 16:48:24,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 16:48:24,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 16:48:24,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 16:48:24,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 16:48:24,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 16:48:24,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 16:48:24,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 16:48:24,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 16:48:24,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 16:48:24,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 16:48:24,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 16:48:24,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 16:48:24,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 16:48:24,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 16:48:24,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 16:48:24,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 16:48:24,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 16:48:24,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 16:48:24,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 16:48:24,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 16:48:24,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 16:48:24,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 16:48:24,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 16:48:24,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 16:48:24,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 16:48:24,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 16:48:24,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 16:48:24,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 16:48:24,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 16:48:24,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 16:48:24,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 16:48:24,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 16:48:24,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 16:48:24,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 16:48:24,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 16:48:24,073 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-22 16:48:24,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 16:48:24,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 16:48:24,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 16:48:24,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 16:48:24,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 16:48:24,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 16:48:24,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 16:48:24,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 16:48:24,099 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 16:48:24,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 16:48:24,100 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 16:48:24,100 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 16:48:24,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 16:48:24,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 16:48:24,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 16:48:24,101 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 16:48:24,101 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 16:48:24,101 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 16:48:24,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 16:48:24,101 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 16:48:24,101 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 16:48:24,101 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 16:48:24,102 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 16:48:24,102 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 16:48:24,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 16:48:24,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 16:48:24,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 16:48:24,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:48:24,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 16:48:24,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 16:48:24,103 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 16:48:24,103 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 16:48:24,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 16:48:24,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 16:48:24,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2021-12-22 16:48:24,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 16:48:24,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 16:48:24,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 16:48:24,362 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 16:48:24,363 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 16:48:24,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2021-12-22 16:48:24,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfdc0c4fd/8e83f3da7ff04f739f4337ea0ce89377/FLAG1d3da1213 [2021-12-22 16:48:24,875 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 16:48:24,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2021-12-22 16:48:24,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfdc0c4fd/8e83f3da7ff04f739f4337ea0ce89377/FLAG1d3da1213 [2021-12-22 16:48:24,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfdc0c4fd/8e83f3da7ff04f739f4337ea0ce89377 [2021-12-22 16:48:24,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 16:48:24,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 16:48:24,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 16:48:24,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 16:48:24,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 16:48:24,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:48:24" (1/1) ... [2021-12-22 16:48:24,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@114eaec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:24, skipping insertion in model container [2021-12-22 16:48:24,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:48:24" (1/1) ... [2021-12-22 16:48:24,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 16:48:24,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:48:25,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:48:25,278 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-22 16:48:25,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:48:25,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:48:25,325 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 16:48:25,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:48:25,415 INFO L208 MainTranslator]: Completed translation [2021-12-22 16:48:25,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25 WrapperNode [2021-12-22 16:48:25,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 16:48:25,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 16:48:25,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 16:48:25,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 16:48:25,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25" (1/1) ... [2021-12-22 16:48:25,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25" (1/1) ... [2021-12-22 16:48:25,466 INFO L137 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2021-12-22 16:48:25,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 16:48:25,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 16:48:25,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 16:48:25,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 16:48:25,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25" (1/1) ... [2021-12-22 16:48:25,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25" (1/1) ... [2021-12-22 16:48:25,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25" (1/1) ... [2021-12-22 16:48:25,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25" (1/1) ... [2021-12-22 16:48:25,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25" (1/1) ... [2021-12-22 16:48:25,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25" (1/1) ... [2021-12-22 16:48:25,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25" (1/1) ... [2021-12-22 16:48:25,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 16:48:25,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 16:48:25,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 16:48:25,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 16:48:25,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25" (1/1) ... [2021-12-22 16:48:25,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:48:25,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:48:25,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 16:48:25,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 16:48:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-12-22 16:48:25,631 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-12-22 16:48:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-12-22 16:48:25,632 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-12-22 16:48:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 16:48:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 16:48:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-22 16:48:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 16:48:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 16:48:25,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 16:48:25,634 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-22 16:48:25,731 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 16:48:25,732 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 16:48:25,893 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 16:48:25,899 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 16:48:25,899 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 16:48:25,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:48:25 BoogieIcfgContainer [2021-12-22 16:48:25,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 16:48:25,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 16:48:25,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 16:48:25,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 16:48:25,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:48:24" (1/3) ... [2021-12-22 16:48:25,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a262a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:48:25, skipping insertion in model container [2021-12-22 16:48:25,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25" (2/3) ... [2021-12-22 16:48:25,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a262a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:48:25, skipping insertion in model container [2021-12-22 16:48:25,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:48:25" (3/3) ... [2021-12-22 16:48:25,931 INFO L111 eAbstractionObserver]: Analyzing ICFG fillarray.i [2021-12-22 16:48:25,935 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 16:48:25,936 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-12-22 16:48:25,936 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-22 16:48:25,977 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,978 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,978 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,978 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,978 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,979 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,979 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,979 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,980 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,980 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,980 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,980 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,980 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,981 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,981 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,981 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,983 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,983 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,984 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,984 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,985 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,985 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,986 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,987 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,987 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,987 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,992 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,992 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,997 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,998 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:25,999 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,000 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,000 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,000 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,002 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,002 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,003 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,003 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,003 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,003 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,003 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,003 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,004 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,004 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,004 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,005 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,006 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,006 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,006 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,006 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,007 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,008 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,008 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,008 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,008 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,008 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,009 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,010 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,010 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,010 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,011 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,011 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,013 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,014 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,014 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,014 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,015 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,016 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,018 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,020 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,020 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,020 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,021 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,021 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,021 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,024 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,025 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,025 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,025 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,025 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,025 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,025 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:26,027 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-22 16:48:26,068 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 16:48:26,075 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 16:48:26,077 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-12-22 16:48:26,088 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-12-22 16:48:26,096 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 90 transitions, 190 flow [2021-12-22 16:48:26,099 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 90 transitions, 190 flow [2021-12-22 16:48:26,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 90 transitions, 190 flow [2021-12-22 16:48:26,136 INFO L129 PetriNetUnfolder]: 4/94 cut-off events. [2021-12-22 16:48:26,137 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-22 16:48:26,140 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 113 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. [2021-12-22 16:48:26,142 INFO L116 LiptonReduction]: Number of co-enabled transitions 1586 [2021-12-22 16:48:30,919 INFO L131 LiptonReduction]: Checked pairs total: 4058 [2021-12-22 16:48:30,919 INFO L133 LiptonReduction]: Total number of compositions: 76 [2021-12-22 16:48:30,926 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 80 flow [2021-12-22 16:48:30,999 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) [2021-12-22 16:48:31,001 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) [2021-12-22 16:48:31,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-12-22 16:48:31,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:31,006 INFO L514 BasicCegarLoop]: trace histogram [1] [2021-12-22 16:48:31,006 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:31,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:31,009 INFO L85 PathProgramCache]: Analyzing trace with hash 333, now seen corresponding path program 1 times [2021-12-22 16:48:31,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:31,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193094299] [2021-12-22 16:48:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:31,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:31,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:31,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:31,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 16:48:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:31,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 16:48:31,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:31,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:31,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:31,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193094299] [2021-12-22 16:48:31,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193094299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:31,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:31,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-12-22 16:48:31,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524309058] [2021-12-22 16:48:31,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:31,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 16:48:31,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:31,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 16:48:31,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 16:48:31,090 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) [2021-12-22 16:48:31,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:31,182 INFO L93 Difference]: Finished difference Result 611 states and 1729 transitions. [2021-12-22 16:48:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 16:48:31,184 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 [2021-12-22 16:48:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:31,199 INFO L225 Difference]: With dead ends: 611 [2021-12-22 16:48:31,199 INFO L226 Difference]: Without dead ends: 611 [2021-12-22 16:48:31,200 INFO L932 BasicCegarLoop]: 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 [2021-12-22 16:48:31,202 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:31,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:48:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-12-22 16:48:31,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2021-12-22 16:48:31,285 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) [2021-12-22 16:48:31,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1729 transitions. [2021-12-22 16:48:31,301 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1729 transitions. Word has length 1 [2021-12-22 16:48:31,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:31,301 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 1729 transitions. [2021-12-22 16:48:31,302 INFO L471 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) [2021-12-22 16:48:31,302 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1729 transitions. [2021-12-22 16:48:31,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-12-22 16:48:31,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:31,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-12-22 16:48:31,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-22 16:48:31,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:31,510 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:31,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:31,510 INFO L85 PathProgramCache]: Analyzing trace with hash 10379, now seen corresponding path program 1 times [2021-12-22 16:48:31,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:31,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918463180] [2021-12-22 16:48:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:31,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:31,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:31,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:31,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 16:48:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:31,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 16:48:31,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:31,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:31,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:31,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918463180] [2021-12-22 16:48:31,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918463180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:31,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:31,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:31,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963650219] [2021-12-22 16:48:31,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:31,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:31,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:31,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:31,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:31,576 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) [2021-12-22 16:48:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:31,732 INFO L93 Difference]: Finished difference Result 610 states and 1728 transitions. [2021-12-22 16:48:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:31,732 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 [2021-12-22 16:48:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:31,736 INFO L225 Difference]: With dead ends: 610 [2021-12-22 16:48:31,737 INFO L226 Difference]: Without dead ends: 609 [2021-12-22 16:48:31,737 INFO L932 BasicCegarLoop]: 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 [2021-12-22 16:48:31,738 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:31,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 23 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:48:31,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-12-22 16:48:31,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2021-12-22 16:48:31,769 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) [2021-12-22 16:48:31,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1727 transitions. [2021-12-22 16:48:31,772 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1727 transitions. Word has length 2 [2021-12-22 16:48:31,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:31,773 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 1727 transitions. [2021-12-22 16:48:31,773 INFO L471 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) [2021-12-22 16:48:31,773 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1727 transitions. [2021-12-22 16:48:31,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-22 16:48:31,773 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:31,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-22 16:48:31,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-22 16:48:31,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:31,983 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:31,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:31,984 INFO L85 PathProgramCache]: Analyzing trace with hash 329222, now seen corresponding path program 1 times [2021-12-22 16:48:31,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:31,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408875725] [2021-12-22 16:48:31,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:31,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:31,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:31,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:31,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-22 16:48:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:32,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 16:48:32,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:32,106 INFO L353 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-12-22 16:48:32,107 INFO L387 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 [2021-12-22 16:48:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:32,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:32,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:32,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408875725] [2021-12-22 16:48:32,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408875725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:32,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:32,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:32,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655649287] [2021-12-22 16:48:32,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:32,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:32,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:32,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:32,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:32,135 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) [2021-12-22 16:48:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:32,211 INFO L93 Difference]: Finished difference Result 601 states and 1711 transitions. [2021-12-22 16:48:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:32,212 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 [2021-12-22 16:48:32,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:32,214 INFO L225 Difference]: With dead ends: 601 [2021-12-22 16:48:32,214 INFO L226 Difference]: Without dead ends: 601 [2021-12-22 16:48:32,215 INFO L932 BasicCegarLoop]: 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 [2021-12-22 16:48:32,215 INFO L933 BasicCegarLoop]: 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 [2021-12-22 16:48:32,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 13 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:48:32,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-12-22 16:48:32,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2021-12-22 16:48:32,226 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) [2021-12-22 16:48:32,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1711 transitions. [2021-12-22 16:48:32,228 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1711 transitions. Word has length 3 [2021-12-22 16:48:32,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:32,228 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 1711 transitions. [2021-12-22 16:48:32,229 INFO L471 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) [2021-12-22 16:48:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1711 transitions. [2021-12-22 16:48:32,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-22 16:48:32,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:32,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-22 16:48:32,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:32,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:32,439 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash 329224, now seen corresponding path program 1 times [2021-12-22 16:48:32,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:32,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811082532] [2021-12-22 16:48:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:32,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:32,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:32,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:32,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-22 16:48:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:32,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 16:48:32,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:32,549 INFO L353 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-22 16:48:32,549 INFO L387 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 [2021-12-22 16:48:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:32,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:32,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:32,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811082532] [2021-12-22 16:48:32,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811082532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:32,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:32,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:32,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583305335] [2021-12-22 16:48:32,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:32,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:32,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:32,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:32,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:32,586 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) [2021-12-22 16:48:32,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:32,678 INFO L93 Difference]: Finished difference Result 593 states and 1695 transitions. [2021-12-22 16:48:32,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:32,679 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 [2021-12-22 16:48:32,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:32,682 INFO L225 Difference]: With dead ends: 593 [2021-12-22 16:48:32,682 INFO L226 Difference]: Without dead ends: 593 [2021-12-22 16:48:32,682 INFO L932 BasicCegarLoop]: 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 [2021-12-22 16:48:32,683 INFO L933 BasicCegarLoop]: 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 [2021-12-22 16:48:32,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 14 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:48:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-12-22 16:48:32,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-12-22 16:48:32,694 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) [2021-12-22 16:48:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1695 transitions. [2021-12-22 16:48:32,697 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1695 transitions. Word has length 3 [2021-12-22 16:48:32,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:32,698 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 1695 transitions. [2021-12-22 16:48:32,698 INFO L471 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) [2021-12-22 16:48:32,698 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1695 transitions. [2021-12-22 16:48:32,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 16:48:32,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:32,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 16:48:32,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:32,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:32,904 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:32,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:32,905 INFO L85 PathProgramCache]: Analyzing trace with hash 316390640, now seen corresponding path program 1 times [2021-12-22 16:48:32,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:32,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691544039] [2021-12-22 16:48:32,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:32,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:32,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:32,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:32,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-22 16:48:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:32,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 16:48:32,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:32,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:32,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:32,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691544039] [2021-12-22 16:48:32,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691544039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:32,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:32,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:32,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651866143] [2021-12-22 16:48:32,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:32,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:32,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:32,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:32,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:32,979 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) [2021-12-22 16:48:33,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:33,010 INFO L93 Difference]: Finished difference Result 529 states and 1503 transitions. [2021-12-22 16:48:33,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:33,011 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 [2021-12-22 16:48:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:33,013 INFO L225 Difference]: With dead ends: 529 [2021-12-22 16:48:33,013 INFO L226 Difference]: Without dead ends: 529 [2021-12-22 16:48:33,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:33,014 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:33,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 11 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:48:33,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-12-22 16:48:33,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2021-12-22 16:48:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 494 states have (on average 3.04251012145749) internal successors, (1503), 528 states have internal predecessors, (1503), 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) [2021-12-22 16:48:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 1503 transitions. [2021-12-22 16:48:33,025 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 1503 transitions. Word has length 5 [2021-12-22 16:48:33,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:33,026 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 1503 transitions. [2021-12-22 16:48:33,026 INFO L471 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) [2021-12-22 16:48:33,026 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 1503 transitions. [2021-12-22 16:48:33,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 16:48:33,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:33,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 16:48:33,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:33,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:33,234 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:33,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:33,235 INFO L85 PathProgramCache]: Analyzing trace with hash 316390656, now seen corresponding path program 1 times [2021-12-22 16:48:33,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:33,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279037067] [2021-12-22 16:48:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:33,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:33,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:33,236 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:33,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-22 16:48:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:33,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 16:48:33,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:33,348 INFO L353 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2021-12-22 16:48:33,348 INFO L387 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 22 treesize of output 28 [2021-12-22 16:48:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:33,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:33,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:33,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279037067] [2021-12-22 16:48:33,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279037067] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:33,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:33,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:33,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164867200] [2021-12-22 16:48:33,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:33,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:33,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:33,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:33,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:33,455 INFO L87 Difference]: Start difference. First operand 529 states and 1503 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) [2021-12-22 16:48:33,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:33,480 INFO L93 Difference]: Finished difference Result 528 states and 1500 transitions. [2021-12-22 16:48:33,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:33,480 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 [2021-12-22 16:48:33,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:33,483 INFO L225 Difference]: With dead ends: 528 [2021-12-22 16:48:33,483 INFO L226 Difference]: Without dead ends: 528 [2021-12-22 16:48:33,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:33,484 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:33,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2021-12-22 16:48:33,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-12-22 16:48:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2021-12-22 16:48:33,493 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) [2021-12-22 16:48:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1500 transitions. [2021-12-22 16:48:33,494 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1500 transitions. Word has length 5 [2021-12-22 16:48:33,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:33,495 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1500 transitions. [2021-12-22 16:48:33,495 INFO L471 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) [2021-12-22 16:48:33,495 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1500 transitions. [2021-12-22 16:48:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 16:48:33,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:33,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 16:48:33,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:33,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:33,707 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:33,708 INFO L85 PathProgramCache]: Analyzing trace with hash 316390641, now seen corresponding path program 1 times [2021-12-22 16:48:33,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:33,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256605599] [2021-12-22 16:48:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:33,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:33,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:33,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:33,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-22 16:48:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:33,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 16:48:33,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:33,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:33,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:33,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256605599] [2021-12-22 16:48:33,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256605599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:33,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:33,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:33,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954630700] [2021-12-22 16:48:33,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:33,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:33,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:33,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:33,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:33,773 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) [2021-12-22 16:48:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:33,797 INFO L93 Difference]: Finished difference Result 464 states and 1308 transitions. [2021-12-22 16:48:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:33,798 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 [2021-12-22 16:48:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:33,800 INFO L225 Difference]: With dead ends: 464 [2021-12-22 16:48:33,800 INFO L226 Difference]: Without dead ends: 464 [2021-12-22 16:48:33,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:33,800 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:33,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 11 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:48:33,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-12-22 16:48:33,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2021-12-22 16:48:33,808 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) [2021-12-22 16:48:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1308 transitions. [2021-12-22 16:48:33,809 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1308 transitions. Word has length 5 [2021-12-22 16:48:33,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:33,809 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1308 transitions. [2021-12-22 16:48:33,810 INFO L471 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) [2021-12-22 16:48:33,810 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1308 transitions. [2021-12-22 16:48:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 16:48:33,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:33,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 16:48:33,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:34,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:34,019 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:34,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:34,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1217272844, now seen corresponding path program 1 times [2021-12-22 16:48:34,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:34,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854616344] [2021-12-22 16:48:34,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:34,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:34,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:34,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:34,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-22 16:48:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:34,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 16:48:34,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:34,135 INFO L353 Elim1Store]: treesize reduction 35, result has 36.4 percent of original size [2021-12-22 16:48:34,136 INFO L387 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 22 treesize of output 32 [2021-12-22 16:48:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:34,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:34,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:34,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854616344] [2021-12-22 16:48:34,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854616344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:34,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:34,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:34,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724495177] [2021-12-22 16:48:34,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:34,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:34,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:34,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:34,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:34,165 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) [2021-12-22 16:48:34,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:34,220 INFO L93 Difference]: Finished difference Result 401 states and 1119 transitions. [2021-12-22 16:48:34,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:34,221 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 [2021-12-22 16:48:34,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:34,222 INFO L225 Difference]: With dead ends: 401 [2021-12-22 16:48:34,222 INFO L226 Difference]: Without dead ends: 401 [2021-12-22 16:48:34,223 INFO L932 BasicCegarLoop]: 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 [2021-12-22 16:48:34,223 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2021-12-22 16:48:34,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 13 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:48:34,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-12-22 16:48:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2021-12-22 16:48:34,229 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) [2021-12-22 16:48:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1119 transitions. [2021-12-22 16:48:34,230 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1119 transitions. Word has length 6 [2021-12-22 16:48:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:34,231 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1119 transitions. [2021-12-22 16:48:34,231 INFO L471 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) [2021-12-22 16:48:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1119 transitions. [2021-12-22 16:48:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 16:48:34,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:34,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:34,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:34,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:34,441 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:34,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:34,442 INFO L85 PathProgramCache]: Analyzing trace with hash -921623750, now seen corresponding path program 1 times [2021-12-22 16:48:34,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:34,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734712997] [2021-12-22 16:48:34,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:34,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:34,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:34,443 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:34,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-22 16:48:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:34,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 16:48:34,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:34,519 INFO L353 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2021-12-22 16:48:34,519 INFO L387 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 22 treesize of output 28 [2021-12-22 16:48:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:34,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:34,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:34,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734712997] [2021-12-22 16:48:34,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734712997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:34,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:34,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:48:34,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264731179] [2021-12-22 16:48:34,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:34,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:48:34,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:34,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:48:34,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:48:34,613 INFO L87 Difference]: Start difference. First operand 401 states and 1119 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-22 16:48:34,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:34,627 INFO L93 Difference]: Finished difference Result 405 states and 1129 transitions. [2021-12-22 16:48:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:48:34,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-12-22 16:48:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:34,638 INFO L225 Difference]: With dead ends: 405 [2021-12-22 16:48:34,638 INFO L226 Difference]: Without dead ends: 405 [2021-12-22 16:48:34,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:48:34,639 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:34,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 46 Unchecked, 0.0s Time] [2021-12-22 16:48:34,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-12-22 16:48:34,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2021-12-22 16:48:34,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 388 states have (on average 2.9097938144329896) internal successors, (1129), 404 states have internal predecessors, (1129), 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) [2021-12-22 16:48:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1129 transitions. [2021-12-22 16:48:34,646 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1129 transitions. Word has length 7 [2021-12-22 16:48:34,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:34,646 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 1129 transitions. [2021-12-22 16:48:34,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-22 16:48:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1129 transitions. [2021-12-22 16:48:34,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 16:48:34,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:34,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:34,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-22 16:48:34,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:34,854 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:34,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:34,854 INFO L85 PathProgramCache]: Analyzing trace with hash -921623749, now seen corresponding path program 1 times [2021-12-22 16:48:34,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:34,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074989185] [2021-12-22 16:48:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:34,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:34,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:34,856 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:34,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-22 16:48:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 16:48:34,909 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 16:48:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 16:48:34,946 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-22 16:48:34,946 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 16:48:34,946 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATION (17 of 18 remaining) [2021-12-22 16:48:34,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2021-12-22 16:48:34,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (15 of 18 remaining) [2021-12-22 16:48:34,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (14 of 18 remaining) [2021-12-22 16:48:34,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (13 of 18 remaining) [2021-12-22 16:48:34,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (12 of 18 remaining) [2021-12-22 16:48:34,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2021-12-22 16:48:34,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2021-12-22 16:48:34,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2021-12-22 16:48:34,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (8 of 18 remaining) [2021-12-22 16:48:34,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (7 of 18 remaining) [2021-12-22 16:48:34,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATION (6 of 18 remaining) [2021-12-22 16:48:34,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATION (5 of 18 remaining) [2021-12-22 16:48:34,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATION (4 of 18 remaining) [2021-12-22 16:48:34,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATION (3 of 18 remaining) [2021-12-22 16:48:34,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATION (2 of 18 remaining) [2021-12-22 16:48:34,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATION (1 of 18 remaining) [2021-12-22 16:48:34,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATION (0 of 18 remaining) [2021-12-22 16:48:34,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:35,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:35,152 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:35,154 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-22 16:48:35,154 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 16:48:35,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:48:35 BasicIcfg [2021-12-22 16:48:35,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 16:48:35,185 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 16:48:35,185 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 16:48:35,185 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 16:48:35,186 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:48:25" (3/4) ... [2021-12-22 16:48:35,187 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-22 16:48:35,232 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 16:48:35,232 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 16:48:35,232 INFO L158 Benchmark]: Toolchain (without parser) took 10329.51ms. Allocated memory was 71.3MB in the beginning and 130.0MB in the end (delta: 58.7MB). Free memory was 55.5MB in the beginning and 84.1MB in the end (delta: -28.6MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2021-12-22 16:48:35,233 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 31.6MB in the beginning and 31.5MB in the end (delta: 48.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 16:48:35,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.18ms. Allocated memory is still 71.3MB. Free memory was 55.3MB in the beginning and 47.4MB in the end (delta: 7.9MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2021-12-22 16:48:35,233 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.60ms. Allocated memory is still 71.3MB. Free memory was 47.4MB in the beginning and 45.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 16:48:35,233 INFO L158 Benchmark]: Boogie Preprocessor took 48.01ms. Allocated memory is still 71.3MB. Free memory was 45.3MB in the beginning and 43.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 16:48:35,233 INFO L158 Benchmark]: RCFGBuilder took 404.56ms. Allocated memory is still 71.3MB. Free memory was 43.5MB in the beginning and 50.1MB in the end (delta: -6.6MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2021-12-22 16:48:35,233 INFO L158 Benchmark]: TraceAbstraction took 9262.73ms. Allocated memory was 71.3MB in the beginning and 130.0MB in the end (delta: 58.7MB). Free memory was 49.8MB in the beginning and 87.2MB in the end (delta: -37.5MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2021-12-22 16:48:35,233 INFO L158 Benchmark]: Witness Printer took 46.79ms. Allocated memory is still 130.0MB. Free memory was 87.2MB in the beginning and 84.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 16:48:35,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 31.6MB in the beginning and 31.5MB in the end (delta: 48.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.18ms. Allocated memory is still 71.3MB. Free memory was 55.3MB in the beginning and 47.4MB in the end (delta: 7.9MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.60ms. Allocated memory is still 71.3MB. Free memory was 47.4MB in the beginning and 45.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.01ms. Allocated memory is still 71.3MB. Free memory was 45.3MB in the beginning and 43.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 404.56ms. Allocated memory is still 71.3MB. Free memory was 43.5MB in the beginning and 50.1MB in the end (delta: -6.6MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9262.73ms. Allocated memory was 71.3MB in the beginning and 130.0MB in the end (delta: 58.7MB). Free memory was 49.8MB in the beginning and 87.2MB in the end (delta: -37.5MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * Witness Printer took 46.79ms. Allocated memory is still 130.0MB. Free memory was 87.2MB in the beginning and 84.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 92 PlacesBefore, 39 PlacesAfterwards, 90 TransitionsBefore, 35 TransitionsAfterwards, 1586 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 76 TotalNumberOfCompositions, 4058 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1945, positive: 1782, positive conditional: 0, positive unconditional: 1782, negative: 163, negative conditional: 0, negative unconditional: 163, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 914, positive: 876, positive conditional: 0, positive unconditional: 876, 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: 914, positive: 871, positive conditional: 0, positive unconditional: 871, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 295, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 272, negative conditional: 0, negative unconditional: 272, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1945, positive: 906, positive conditional: 0, positive unconditional: 906, negative: 125, negative conditional: 0, negative unconditional: 125, unknown: 914, unknown conditional: 0, unknown unconditional: 914] , Statistics on independence cache: Total cache size (in pairs): 169, Positive cache size: 149, Positive conditional cache size: 0, Positive unconditional cache size: 149, 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: 1044]: 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={2:0}, arg={2:0}, argc=5, argv={9:6}, argv={9:6}, i=1, id1={7:0}, id2={15:0}, ind=0, j=2, pthread_create(&id1, ((void *)0), t1, a)=0, size=2] [L1041] 1 int *a = (int *)arg; VAL [a={2:0}, arg={2:0}, arg={2:0}, i=1, ind=0, j=2, size=2] [L1042] COND TRUE 1 ind < size - 1 VAL [a={2:0}, arg={2:0}, arg={2:0}, i=1, ind=0, j=2, size=2] [L1043] 1 ++ind VAL [a={2:0}, arg={2:0}, arg={2:0}, i=1, ind=1, j=2, size=2] [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: 1064]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: 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: 1044]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: 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: 9.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 121 mSDsluCounter, 137 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 66 IncrementalHoareTripleChecker+Unchecked, 91 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 225 IncrementalHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 91 mSDtfsCounter, 225 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=613occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 28 ConstructedInterpolants, 10 QuantifiedInterpolants, 326 SizeOfPredicates, 13 NumberOfNonLiveVariables, 473 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2021-12-22 16:48:35,267 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)