./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-memsafety/fillarray1.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/fillarray1.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 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 16:48:23,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 16:48:23,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 16:48:23,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 16:48:23,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 16:48:23,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 16:48:23,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 16:48:23,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 16:48:23,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 16:48:23,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 16:48:23,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 16:48:23,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 16:48:23,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 16:48:23,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 16:48:23,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 16:48:23,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 16:48:23,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 16:48:23,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 16:48:23,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 16:48:23,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 16:48:23,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 16:48:23,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 16:48:23,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 16:48:23,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 16:48:23,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 16:48:23,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 16:48:23,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 16:48:23,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 16:48:23,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 16:48:23,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 16:48:23,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 16:48:23,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 16:48:23,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 16:48:23,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 16:48:23,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 16:48:23,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 16:48:23,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 16:48:23,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 16:48:23,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 16:48:23,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 16:48:23,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 16:48:23,125 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 16:48:23,159 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 16:48:23,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 16:48:23,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 16:48:23,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 16:48:23,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 16:48:23,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 16:48:23,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 16:48:23,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 16:48:23,165 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 16:48:23,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 16:48:23,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 16:48:23,165 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 16:48:23,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 16:48:23,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 16:48:23,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 16:48:23,166 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 16:48:23,166 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 16:48:23,166 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 16:48:23,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 16:48:23,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 16:48:23,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 16:48:23,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 16:48:23,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 16:48:23,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 16:48:23,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 16:48:23,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:48:23,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 16:48:23,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 16:48:23,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 16:48:23,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 16:48:23,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 16:48:23,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2021-12-22 16:48:23,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 16:48:23,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 16:48:23,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 16:48:23,445 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 16:48:23,446 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 16:48:23,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-12-22 16:48:23,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28cb44c1/ad79e9909dfa4aa2873cc027b8497b93/FLAG8057e8cd5 [2021-12-22 16:48:24,055 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 16:48:24,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-12-22 16:48:24,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28cb44c1/ad79e9909dfa4aa2873cc027b8497b93/FLAG8057e8cd5 [2021-12-22 16:48:24,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28cb44c1/ad79e9909dfa4aa2873cc027b8497b93 [2021-12-22 16:48:24,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 16:48:24,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 16:48:24,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 16:48:24,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 16:48:24,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 16:48:24,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:48:24" (1/1) ... [2021-12-22 16:48:24,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2e78b 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 16:48:24,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:48:24" (1/1) ... [2021-12-22 16:48:24,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 16:48:24,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:48:25,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:48:25,015 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 16:48:25,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ce779da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:25, skipping insertion in model container [2021-12-22 16:48:25,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 16:48:25,017 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-22 16:48:25,019 INFO L158 Benchmark]: Toolchain (without parser) took 502.19ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 44.9MB in the beginning and 68.3MB in the end (delta: -23.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 16:48:25,020 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 77.6MB. Free memory is still 37.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 16:48:25,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.34ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 44.7MB in the beginning and 68.3MB in the end (delta: -23.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 16:48:25,023 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 77.6MB. Free memory is still 37.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 499.34ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 44.7MB in the beginning and 68.3MB in the end (delta: -23.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: 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/fillarray1.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 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 16:48:26,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 16:48:26,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 16:48:26,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 16:48:26,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 16:48:26,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 16:48:26,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 16:48:26,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 16:48:26,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 16:48:26,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 16:48:26,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 16:48:26,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 16:48:26,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 16:48:26,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 16:48:26,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 16:48:26,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 16:48:26,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 16:48:26,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 16:48:26,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 16:48:26,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 16:48:26,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 16:48:26,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 16:48:26,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 16:48:26,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 16:48:26,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 16:48:26,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 16:48:26,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 16:48:26,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 16:48:26,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 16:48:26,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 16:48:26,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 16:48:26,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 16:48:26,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 16:48:26,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 16:48:26,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 16:48:26,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 16:48:26,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 16:48:26,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 16:48:26,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 16:48:26,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 16:48:26,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 16:48:26,884 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-22 16:48:26,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 16:48:26,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 16:48:26,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 16:48:26,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 16:48:26,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 16:48:26,925 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 16:48:26,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 16:48:26,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 16:48:26,927 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 16:48:26,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 16:48:26,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 16:48:26,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 16:48:26,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 16:48:26,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 16:48:26,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 16:48:26,929 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 16:48:26,929 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 16:48:26,929 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 16:48:26,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 16:48:26,929 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 16:48:26,929 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 16:48:26,930 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 16:48:26,930 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 16:48:26,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 16:48:26,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 16:48:26,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 16:48:26,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 16:48:26,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:48:26,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 16:48:26,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 16:48:26,938 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 16:48:26,938 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 16:48:26,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 16:48:26,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 16:48:26,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2021-12-22 16:48:27,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 16:48:27,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 16:48:27,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 16:48:27,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 16:48:27,294 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 16:48:27,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-12-22 16:48:27,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bd956556/9b8b276a543443179fa8e3f9767a7ace/FLAG2f7227a4e [2021-12-22 16:48:27,850 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 16:48:27,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-12-22 16:48:27,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bd956556/9b8b276a543443179fa8e3f9767a7ace/FLAG2f7227a4e [2021-12-22 16:48:28,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bd956556/9b8b276a543443179fa8e3f9767a7ace [2021-12-22 16:48:28,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 16:48:28,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 16:48:28,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 16:48:28,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 16:48:28,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 16:48:28,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:48:28" (1/1) ... [2021-12-22 16:48:28,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55787816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:28, skipping insertion in model container [2021-12-22 16:48:28,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:48:28" (1/1) ... [2021-12-22 16:48:28,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 16:48:28,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:48:28,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:48:28,853 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-22 16:48:28,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:48:28,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:48:28,920 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 16:48:28,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:48:29,017 INFO L208 MainTranslator]: Completed translation [2021-12-22 16:48:29,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:29 WrapperNode [2021-12-22 16:48:29,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 16:48:29,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 16:48:29,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 16:48:29,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 16:48:29,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:29" (1/1) ... [2021-12-22 16:48:29,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:29" (1/1) ... [2021-12-22 16:48:29,086 INFO L137 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2021-12-22 16:48:29,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 16:48:29,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 16:48:29,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 16:48:29,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 16:48:29,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:29" (1/1) ... [2021-12-22 16:48:29,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:29" (1/1) ... [2021-12-22 16:48:29,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:29" (1/1) ... [2021-12-22 16:48:29,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:29" (1/1) ... [2021-12-22 16:48:29,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:29" (1/1) ... [2021-12-22 16:48:29,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:29" (1/1) ... [2021-12-22 16:48:29,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:29" (1/1) ... [2021-12-22 16:48:29,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 16:48:29,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 16:48:29,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 16:48:29,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 16:48:29,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:29" (1/1) ... [2021-12-22 16:48:29,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:48:29,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:48:29,172 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 16:48:29,190 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 16:48:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-12-22 16:48:29,219 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-12-22 16:48:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-12-22 16:48:29,219 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-12-22 16:48:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 16:48:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 16:48:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-22 16:48:29,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 16:48:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 16:48:29,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 16:48:29,221 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 16:48:29,370 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 16:48:29,372 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 16:48:29,640 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 16:48:29,646 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 16:48:29,647 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-22 16:48:29,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:48:29 BoogieIcfgContainer [2021-12-22 16:48:29,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 16:48:29,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 16:48:29,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 16:48:29,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 16:48:29,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:48:28" (1/3) ... [2021-12-22 16:48:29,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7088c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:48:29, skipping insertion in model container [2021-12-22 16:48:29,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:48:29" (2/3) ... [2021-12-22 16:48:29,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7088c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:48:29, skipping insertion in model container [2021-12-22 16:48:29,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:48:29" (3/3) ... [2021-12-22 16:48:29,656 INFO L111 eAbstractionObserver]: Analyzing ICFG fillarray1.i [2021-12-22 16:48:29,661 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 16:48:29,661 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-12-22 16:48:29,662 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-22 16:48:29,703 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,703 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,704 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,704 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,704 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,704 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,704 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,704 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,705 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,705 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,705 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,705 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,705 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,705 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,705 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,706 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,707 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,707 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,707 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,707 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,707 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,707 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,708 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,708 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,708 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,708 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,709 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,709 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,710 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,711 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,711 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,711 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,711 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,712 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,712 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,712 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,713 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,713 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,713 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,713 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,713 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,713 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,714 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,714 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,714 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,714 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,714 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,714 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,714 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,714 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,718 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,719 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,719 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,719 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,720 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,720 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,720 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,720 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,721 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,721 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,730 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,731 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,735 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,736 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,737 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,737 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,739 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,740 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,749 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,750 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,750 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,750 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,751 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,751 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,751 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,755 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,756 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,756 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,756 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,756 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,756 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,757 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 16:48:29,758 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-22 16:48:29,802 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 16:48:29,811 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 16:48:29,812 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-12-22 16:48:29,823 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-12-22 16:48:29,841 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 105 transitions, 220 flow [2021-12-22 16:48:29,847 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 105 transitions, 220 flow [2021-12-22 16:48:29,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 220 flow [2021-12-22 16:48:29,903 INFO L129 PetriNetUnfolder]: 8/109 cut-off events. [2021-12-22 16:48:29,904 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-22 16:48:29,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 109 events. 8/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 152 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2021-12-22 16:48:29,914 INFO L116 LiptonReduction]: Number of co-enabled transitions 2546 [2021-12-22 16:48:36,655 INFO L131 LiptonReduction]: Checked pairs total: 7972 [2021-12-22 16:48:36,655 INFO L133 LiptonReduction]: Total number of compositions: 86 [2021-12-22 16:48:36,666 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 45 transitions, 100 flow [2021-12-22 16:48:36,765 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1135 states, 1082 states have (on average 3.353049907578558) internal successors, (3628), 1134 states have internal predecessors, (3628), 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 16:48:36,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 1135 states, 1082 states have (on average 3.353049907578558) internal successors, (3628), 1134 states have internal predecessors, (3628), 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 16:48:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-12-22 16:48:36,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:36,774 INFO L514 BasicCegarLoop]: trace histogram [1] [2021-12-22 16:48:36,775 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 16:48:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash 401, now seen corresponding path program 1 times [2021-12-22 16:48:36,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:36,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957647143] [2021-12-22 16:48:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:36,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:36,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:36,797 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 16:48:36,821 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 16:48:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:36,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 16:48:36,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:36,875 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 16:48:36,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:36,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:36,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957647143] [2021-12-22 16:48:36,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957647143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:36,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:36,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-12-22 16:48:36,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200068394] [2021-12-22 16:48:36,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:36,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 16:48:36,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 16:48:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 16:48:36,906 INFO L87 Difference]: Start difference. First operand has 1135 states, 1082 states have (on average 3.353049907578558) internal successors, (3628), 1134 states have internal predecessors, (3628), 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 16:48:37,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:37,108 INFO L93 Difference]: Finished difference Result 1133 states and 3428 transitions. [2021-12-22 16:48:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 16:48:37,123 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 16:48:37,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:37,154 INFO L225 Difference]: With dead ends: 1133 [2021-12-22 16:48:37,154 INFO L226 Difference]: Without dead ends: 1133 [2021-12-22 16:48:37,154 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 16:48:37,165 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:37,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:48:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-12-22 16:48:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2021-12-22 16:48:37,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1082 states have (on average 3.168207024029575) internal successors, (3428), 1132 states have internal predecessors, (3428), 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 16:48:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 3428 transitions. [2021-12-22 16:48:37,286 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 3428 transitions. Word has length 1 [2021-12-22 16:48:37,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:37,286 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 3428 transitions. [2021-12-22 16:48:37,286 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 16:48:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 3428 transitions. [2021-12-22 16:48:37,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-12-22 16:48:37,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:37,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-12-22 16:48:37,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:37,496 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 16:48:37,497 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 16:48:37,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:37,498 INFO L85 PathProgramCache]: Analyzing trace with hash 12585, now seen corresponding path program 1 times [2021-12-22 16:48:37,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:37,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929514882] [2021-12-22 16:48:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:37,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:37,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:37,500 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 16:48:37,502 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 16:48:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:37,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 16:48:37,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:37,582 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 16:48:37,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:37,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:37,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929514882] [2021-12-22 16:48:37,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929514882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:37,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:37,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:37,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375117196] [2021-12-22 16:48:37,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:37,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:37,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:37,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:37,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:37,586 INFO L87 Difference]: Start difference. First operand 1133 states and 3428 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 16:48:37,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:37,739 INFO L93 Difference]: Finished difference Result 1132 states and 3427 transitions. [2021-12-22 16:48:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:37,740 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 16:48:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:37,747 INFO L225 Difference]: With dead ends: 1132 [2021-12-22 16:48:37,747 INFO L226 Difference]: Without dead ends: 1131 [2021-12-22 16:48:37,748 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 16:48:37,750 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:37,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 31 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:48:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-12-22 16:48:37,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1131. [2021-12-22 16:48:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1081 states have (on average 3.169287696577243) internal successors, (3426), 1130 states have internal predecessors, (3426), 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 16:48:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 3426 transitions. [2021-12-22 16:48:37,799 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 3426 transitions. Word has length 2 [2021-12-22 16:48:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:37,799 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 3426 transitions. [2021-12-22 16:48:37,799 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 16:48:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 3426 transitions. [2021-12-22 16:48:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-22 16:48:37,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:37,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-22 16:48:37,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:38,007 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 16:48:38,008 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:38,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash 395542, now seen corresponding path program 1 times [2021-12-22 16:48:38,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:38,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454629370] [2021-12-22 16:48:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:38,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:38,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:38,011 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 16:48:38,017 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 16:48:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:38,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 16:48:38,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:38,155 INFO L353 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-22 16:48:38,157 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 16:48:38,201 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 16:48:38,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:38,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:38,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454629370] [2021-12-22 16:48:38,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454629370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:38,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:38,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:38,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643420089] [2021-12-22 16:48:38,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:38,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:38,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:38,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:38,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:38,207 INFO L87 Difference]: Start difference. First operand 1131 states and 3426 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 16:48:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:38,326 INFO L93 Difference]: Finished difference Result 1120 states and 3403 transitions. [2021-12-22 16:48:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:38,327 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 16:48:38,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:38,333 INFO L225 Difference]: With dead ends: 1120 [2021-12-22 16:48:38,334 INFO L226 Difference]: Without dead ends: 1120 [2021-12-22 16:48:38,334 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 16:48:38,335 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:38,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 22 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:48:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-12-22 16:48:38,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1120. [2021-12-22 16:48:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1073 states have (on average 3.1714818266542406) internal successors, (3403), 1119 states have internal predecessors, (3403), 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 16:48:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3403 transitions. [2021-12-22 16:48:38,372 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3403 transitions. Word has length 3 [2021-12-22 16:48:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:38,372 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 3403 transitions. [2021-12-22 16:48:38,372 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 16:48:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3403 transitions. [2021-12-22 16:48:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-22 16:48:38,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:38,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-22 16:48:38,386 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 16:48:38,582 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 16:48:38,582 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:38,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash 395543, now seen corresponding path program 1 times [2021-12-22 16:48:38,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:38,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413431316] [2021-12-22 16:48:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:38,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:38,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:38,585 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 16:48:38,587 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 16:48:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:38,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 16:48:38,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:38,690 INFO L353 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-12-22 16:48:38,690 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 16:48:38,712 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 16:48:38,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:38,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:38,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413431316] [2021-12-22 16:48:38,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413431316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:38,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:38,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:38,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523476643] [2021-12-22 16:48:38,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:38,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:38,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:38,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:38,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:38,715 INFO L87 Difference]: Start difference. First operand 1120 states and 3403 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 16:48:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:38,832 INFO L93 Difference]: Finished difference Result 1109 states and 3380 transitions. [2021-12-22 16:48:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:38,833 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 16:48:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:38,841 INFO L225 Difference]: With dead ends: 1109 [2021-12-22 16:48:38,841 INFO L226 Difference]: Without dead ends: 1109 [2021-12-22 16:48:38,842 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 16:48:38,844 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:38,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 21 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:48:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-12-22 16:48:38,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1109. [2021-12-22 16:48:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1065 states have (on average 3.1737089201877935) internal successors, (3380), 1108 states have internal predecessors, (3380), 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 16:48:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 3380 transitions. [2021-12-22 16:48:38,883 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 3380 transitions. Word has length 3 [2021-12-22 16:48:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:38,886 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 3380 transitions. [2021-12-22 16:48:38,887 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 16:48:38,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 3380 transitions. [2021-12-22 16:48:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 16:48:38,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:38,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 16:48:38,900 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 16:48:39,096 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 16:48:39,096 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:39,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:39,097 INFO L85 PathProgramCache]: Analyzing trace with hash 380126940, now seen corresponding path program 1 times [2021-12-22 16:48:39,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:39,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835021078] [2021-12-22 16:48:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:39,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:39,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:39,098 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 16:48:39,099 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 16:48:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:39,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 16:48:39,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:39,213 INFO L353 Elim1Store]: treesize reduction 35, result has 36.4 percent of original size [2021-12-22 16:48:39,214 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 24 treesize of output 34 [2021-12-22 16:48:39,277 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 16:48:39,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:39,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:39,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835021078] [2021-12-22 16:48:39,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835021078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:39,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:39,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:39,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566295805] [2021-12-22 16:48:39,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:39,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:39,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:39,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:39,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:39,280 INFO L87 Difference]: Start difference. First operand 1109 states and 3380 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 16:48:39,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:39,385 INFO L93 Difference]: Finished difference Result 988 states and 2995 transitions. [2021-12-22 16:48:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:39,386 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 16:48:39,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:39,392 INFO L225 Difference]: With dead ends: 988 [2021-12-22 16:48:39,392 INFO L226 Difference]: Without dead ends: 988 [2021-12-22 16:48:39,392 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 16:48:39,393 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:39,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 21 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:48:39,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-12-22 16:48:39,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 988. [2021-12-22 16:48:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 953 states have (on average 3.142707240293809) internal successors, (2995), 987 states have internal predecessors, (2995), 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 16:48:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 2995 transitions. [2021-12-22 16:48:39,435 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 2995 transitions. Word has length 5 [2021-12-22 16:48:39,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:39,436 INFO L470 AbstractCegarLoop]: Abstraction has 988 states and 2995 transitions. [2021-12-22 16:48:39,436 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 16:48:39,436 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 2995 transitions. [2021-12-22 16:48:39,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 16:48:39,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:39,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 16:48:39,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-22 16:48:39,645 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 16:48:39,646 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:39,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash 380126927, now seen corresponding path program 1 times [2021-12-22 16:48:39,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:39,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929506909] [2021-12-22 16:48:39,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:39,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:39,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:39,648 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 16:48:39,650 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 16:48:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:39,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 16:48:39,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:39,721 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 16:48:39,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:39,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:39,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929506909] [2021-12-22 16:48:39,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929506909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:39,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:39,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:39,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409301374] [2021-12-22 16:48:39,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:39,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:39,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:39,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:39,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:39,724 INFO L87 Difference]: Start difference. First operand 988 states and 2995 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 16:48:39,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:39,786 INFO L93 Difference]: Finished difference Result 867 states and 2610 transitions. [2021-12-22 16:48:39,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:39,787 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 16:48:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:39,792 INFO L225 Difference]: With dead ends: 867 [2021-12-22 16:48:39,792 INFO L226 Difference]: Without dead ends: 867 [2021-12-22 16:48:39,793 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 16:48:39,793 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:39,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 11 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:48:39,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-12-22 16:48:39,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 867. [2021-12-22 16:48:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 841 states have (on average 3.103448275862069) internal successors, (2610), 866 states have internal predecessors, (2610), 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 16:48:39,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2610 transitions. [2021-12-22 16:48:39,831 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2610 transitions. Word has length 5 [2021-12-22 16:48:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:39,831 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2610 transitions. [2021-12-22 16:48:39,831 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 16:48:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2610 transitions. [2021-12-22 16:48:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 16:48:39,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:39,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 16:48:39,843 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 16:48:40,042 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 16:48:40,042 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:40,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:40,043 INFO L85 PathProgramCache]: Analyzing trace with hash 380126939, now seen corresponding path program 1 times [2021-12-22 16:48:40,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:40,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123187889] [2021-12-22 16:48:40,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:40,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:40,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:40,045 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 16:48:40,047 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 16:48:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:40,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 16:48:40,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:40,144 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 16:48:40,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:40,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:40,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123187889] [2021-12-22 16:48:40,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123187889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:40,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:40,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 16:48:40,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475923008] [2021-12-22 16:48:40,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:40,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:40,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:40,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:40,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:40,147 INFO L87 Difference]: Start difference. First operand 867 states and 2610 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 16:48:40,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:40,215 INFO L93 Difference]: Finished difference Result 746 states and 2225 transitions. [2021-12-22 16:48:40,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:40,216 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 16:48:40,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:40,220 INFO L225 Difference]: With dead ends: 746 [2021-12-22 16:48:40,220 INFO L226 Difference]: Without dead ends: 746 [2021-12-22 16:48:40,220 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 16:48:40,221 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:40,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 11 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:48:40,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-12-22 16:48:40,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2021-12-22 16:48:40,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 729 states have (on average 3.0521262002743486) internal successors, (2225), 745 states have internal predecessors, (2225), 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 16:48:40,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 2225 transitions. [2021-12-22 16:48:40,252 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 2225 transitions. Word has length 5 [2021-12-22 16:48:40,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:40,252 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 2225 transitions. [2021-12-22 16:48:40,252 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 16:48:40,252 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 2225 transitions. [2021-12-22 16:48:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 16:48:40,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:40,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:40,265 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 16:48:40,462 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 16:48:40,463 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:40,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1466590262, now seen corresponding path program 1 times [2021-12-22 16:48:40,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:40,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540310439] [2021-12-22 16:48:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:40,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:40,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:40,466 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 16:48:40,466 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 16:48:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:40,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 16:48:40,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:40,864 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 16:48:40,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:40,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:40,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540310439] [2021-12-22 16:48:40,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540310439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:40,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:40,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:48:40,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756281608] [2021-12-22 16:48:40,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:40,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:48:40,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:40,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:48:40,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:40,866 INFO L87 Difference]: Start difference. First operand 746 states and 2225 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 16:48:40,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:40,915 INFO L93 Difference]: Finished difference Result 745 states and 2222 transitions. [2021-12-22 16:48:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:48:40,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2021-12-22 16:48:40,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:40,919 INFO L225 Difference]: With dead ends: 745 [2021-12-22 16:48:40,920 INFO L226 Difference]: Without dead ends: 745 [2021-12-22 16:48:40,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:40,921 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:40,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 65 Unchecked, 0.0s Time] [2021-12-22 16:48:40,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-12-22 16:48:40,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2021-12-22 16:48:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 728 states have (on average 3.052197802197802) internal successors, (2222), 744 states have internal predecessors, (2222), 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 16:48:40,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 2222 transitions. [2021-12-22 16:48:40,940 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 2222 transitions. Word has length 8 [2021-12-22 16:48:40,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:40,940 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 2222 transitions. [2021-12-22 16:48:40,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 16:48:40,940 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 2222 transitions. [2021-12-22 16:48:40,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:48:40,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:40,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:40,954 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 16:48:41,150 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 16:48:41,150 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:41,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:41,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1718577764, now seen corresponding path program 1 times [2021-12-22 16:48:41,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:41,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605809627] [2021-12-22 16:48:41,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:41,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:41,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:41,152 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 16:48:41,153 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 16:48:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:41,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 16:48:41,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:41,501 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 16:48:41,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:41,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:41,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605809627] [2021-12-22 16:48:41,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605809627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:41,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:41,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:48:41,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453332423] [2021-12-22 16:48:41,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:41,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:48:41,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:41,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:48:41,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:41,502 INFO L87 Difference]: Start difference. First operand 745 states and 2222 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:41,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:41,541 INFO L93 Difference]: Finished difference Result 748 states and 2231 transitions. [2021-12-22 16:48:41,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:48:41,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2021-12-22 16:48:41,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:41,545 INFO L225 Difference]: With dead ends: 748 [2021-12-22 16:48:41,545 INFO L226 Difference]: Without dead ends: 748 [2021-12-22 16:48:41,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:41,546 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:41,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 64 Unchecked, 0.0s Time] [2021-12-22 16:48:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-12-22 16:48:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2021-12-22 16:48:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 731 states have (on average 3.0519835841313268) internal successors, (2231), 747 states have internal predecessors, (2231), 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 16:48:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 2231 transitions. [2021-12-22 16:48:41,564 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 2231 transitions. Word has length 9 [2021-12-22 16:48:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:41,564 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 2231 transitions. [2021-12-22 16:48:41,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 2231 transitions. [2021-12-22 16:48:41,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:48:41,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:41,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:41,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:41,775 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 16:48:41,775 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:41,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:41,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1780245134, now seen corresponding path program 2 times [2021-12-22 16:48:41,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:41,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46212895] [2021-12-22 16:48:41,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 16:48:41,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:41,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:41,777 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 16:48:41,780 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 16:48:41,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-22 16:48:41,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 16:48:41,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 16:48:41,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:42,146 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 16:48:42,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:42,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:42,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46212895] [2021-12-22 16:48:42,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46212895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:42,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:42,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:48:42,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552157051] [2021-12-22 16:48:42,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:42,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:48:42,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:42,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:48:42,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:42,148 INFO L87 Difference]: Start difference. First operand 748 states and 2231 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:42,182 INFO L93 Difference]: Finished difference Result 777 states and 2321 transitions. [2021-12-22 16:48:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:48:42,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2021-12-22 16:48:42,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:42,188 INFO L225 Difference]: With dead ends: 777 [2021-12-22 16:48:42,188 INFO L226 Difference]: Without dead ends: 777 [2021-12-22 16:48:42,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:42,189 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 33 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:42,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 111 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 119 Unchecked, 0.0s Time] [2021-12-22 16:48:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-12-22 16:48:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2021-12-22 16:48:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 760 states have (on average 3.0539473684210527) internal successors, (2321), 776 states have internal predecessors, (2321), 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 16:48:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 2321 transitions. [2021-12-22 16:48:42,208 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 2321 transitions. Word has length 9 [2021-12-22 16:48:42,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:42,208 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 2321 transitions. [2021-12-22 16:48:42,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 2321 transitions. [2021-12-22 16:48:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:48:42,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:42,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:42,218 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 16:48:42,418 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 16:48:42,419 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:42,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1780345574, now seen corresponding path program 3 times [2021-12-22 16:48:42,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:42,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569480081] [2021-12-22 16:48:42,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 16:48:42,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:42,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:42,421 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:42,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-22 16:48:42,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-22 16:48:42,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 16:48:42,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 16:48:42,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:42,795 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 16:48:42,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:42,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:42,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569480081] [2021-12-22 16:48:42,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569480081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:42,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:42,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:48:42,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074566007] [2021-12-22 16:48:42,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:42,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:48:42,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:42,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:48:42,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:42,797 INFO L87 Difference]: Start difference. First operand 777 states and 2321 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:42,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:42,831 INFO L93 Difference]: Finished difference Result 778 states and 2324 transitions. [2021-12-22 16:48:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:48:42,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2021-12-22 16:48:42,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:42,836 INFO L225 Difference]: With dead ends: 778 [2021-12-22 16:48:42,836 INFO L226 Difference]: Without dead ends: 778 [2021-12-22 16:48:42,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:42,837 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:42,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 68 Unchecked, 0.0s Time] [2021-12-22 16:48:42,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-12-22 16:48:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 777. [2021-12-22 16:48:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 760 states have (on average 3.0539473684210527) internal successors, (2321), 776 states have internal predecessors, (2321), 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 16:48:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 2321 transitions. [2021-12-22 16:48:42,856 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 2321 transitions. Word has length 9 [2021-12-22 16:48:42,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:42,857 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 2321 transitions. [2021-12-22 16:48:42,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:42,857 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 2321 transitions. [2021-12-22 16:48:42,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:48:42,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:42,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:42,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:43,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:43,067 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:43,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:43,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1780346380, now seen corresponding path program 1 times [2021-12-22 16:48:43,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:43,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040444489] [2021-12-22 16:48:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:43,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:43,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:43,069 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:43,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-22 16:48:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:43,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 16:48:43,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:43,439 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 16:48:43,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:43,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:43,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040444489] [2021-12-22 16:48:43,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040444489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:43,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:43,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:48:43,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767381106] [2021-12-22 16:48:43,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:43,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:48:43,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:43,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:48:43,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:43,440 INFO L87 Difference]: Start difference. First operand 777 states and 2321 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:43,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:43,484 INFO L93 Difference]: Finished difference Result 778 states and 2324 transitions. [2021-12-22 16:48:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:48:43,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2021-12-22 16:48:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:43,493 INFO L225 Difference]: With dead ends: 778 [2021-12-22 16:48:43,494 INFO L226 Difference]: Without dead ends: 778 [2021-12-22 16:48:43,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:43,495 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:43,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 66 Unchecked, 0.0s Time] [2021-12-22 16:48:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-12-22 16:48:43,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 778. [2021-12-22 16:48:43,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 761 states have (on average 3.053876478318003) internal successors, (2324), 777 states have internal predecessors, (2324), 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 16:48:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2324 transitions. [2021-12-22 16:48:43,523 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2324 transitions. Word has length 9 [2021-12-22 16:48:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:43,523 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 2324 transitions. [2021-12-22 16:48:43,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:43,524 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2324 transitions. [2021-12-22 16:48:43,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:48:43,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:43,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:43,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:43,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:43,735 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:43,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:43,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1780302794, now seen corresponding path program 4 times [2021-12-22 16:48:43,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:43,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646543651] [2021-12-22 16:48:43,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 16:48:43,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:43,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:43,737 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:43,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-22 16:48:43,816 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 16:48:43,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 16:48:43,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 16:48:43,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:44,069 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 16:48:44,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:44,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:44,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646543651] [2021-12-22 16:48:44,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646543651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:44,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:44,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:48:44,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253340254] [2021-12-22 16:48:44,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:44,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:48:44,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:44,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:48:44,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:44,071 INFO L87 Difference]: Start difference. First operand 778 states and 2324 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:44,125 INFO L93 Difference]: Finished difference Result 777 states and 2321 transitions. [2021-12-22 16:48:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:48:44,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2021-12-22 16:48:44,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:44,130 INFO L225 Difference]: With dead ends: 777 [2021-12-22 16:48:44,130 INFO L226 Difference]: Without dead ends: 777 [2021-12-22 16:48:44,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:44,131 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:44,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 67 Unchecked, 0.0s Time] [2021-12-22 16:48:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-12-22 16:48:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 775. [2021-12-22 16:48:44,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 758 states have (on average 3.054089709762533) internal successors, (2315), 774 states have internal predecessors, (2315), 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 16:48:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2315 transitions. [2021-12-22 16:48:44,150 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2315 transitions. Word has length 9 [2021-12-22 16:48:44,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:44,150 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2315 transitions. [2021-12-22 16:48:44,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:44,150 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2315 transitions. [2021-12-22 16:48:44,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:48:44,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:44,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:44,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:44,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:44,359 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1780327780, now seen corresponding path program 2 times [2021-12-22 16:48:44,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:44,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257819111] [2021-12-22 16:48:44,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 16:48:44,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:44,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:44,361 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:44,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-22 16:48:44,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-22 16:48:44,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 16:48:44,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 16:48:44,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:44,704 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 16:48:44,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:44,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:44,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257819111] [2021-12-22 16:48:44,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257819111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:44,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:44,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:48:44,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050936294] [2021-12-22 16:48:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:44,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:48:44,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:48:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:44,706 INFO L87 Difference]: Start difference. First operand 775 states and 2315 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:44,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:44,746 INFO L93 Difference]: Finished difference Result 777 states and 2321 transitions. [2021-12-22 16:48:44,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:48:44,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2021-12-22 16:48:44,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:44,751 INFO L225 Difference]: With dead ends: 777 [2021-12-22 16:48:44,751 INFO L226 Difference]: Without dead ends: 777 [2021-12-22 16:48:44,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:44,751 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:44,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 67 Unchecked, 0.0s Time] [2021-12-22 16:48:44,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-12-22 16:48:44,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 776. [2021-12-22 16:48:44,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 759 states have (on average 3.054018445322793) internal successors, (2318), 775 states have internal predecessors, (2318), 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 16:48:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 2318 transitions. [2021-12-22 16:48:44,769 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 2318 transitions. Word has length 9 [2021-12-22 16:48:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:44,769 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 2318 transitions. [2021-12-22 16:48:44,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:44,769 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 2318 transitions. [2021-12-22 16:48:44,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:48:44,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:44,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:44,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:44,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:44,980 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:44,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:44,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1781019700, now seen corresponding path program 3 times [2021-12-22 16:48:44,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:44,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474144012] [2021-12-22 16:48:44,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 16:48:44,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:44,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:44,981 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:44,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-22 16:48:45,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-22 16:48:45,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 16:48:45,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 16:48:45,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:45,308 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 16:48:45,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:45,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:45,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474144012] [2021-12-22 16:48:45,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474144012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:45,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:45,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:48:45,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241086884] [2021-12-22 16:48:45,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:45,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:48:45,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:45,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:48:45,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:45,311 INFO L87 Difference]: Start difference. First operand 776 states and 2318 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:45,360 INFO L93 Difference]: Finished difference Result 806 states and 2411 transitions. [2021-12-22 16:48:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:48:45,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2021-12-22 16:48:45,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:45,364 INFO L225 Difference]: With dead ends: 806 [2021-12-22 16:48:45,364 INFO L226 Difference]: Without dead ends: 806 [2021-12-22 16:48:45,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:48:45,365 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:45,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 111 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 95 Unchecked, 0.0s Time] [2021-12-22 16:48:45,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-12-22 16:48:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 805. [2021-12-22 16:48:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 788 states have (on average 3.0558375634517767) internal successors, (2408), 804 states have internal predecessors, (2408), 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 16:48:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2408 transitions. [2021-12-22 16:48:45,383 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2408 transitions. Word has length 9 [2021-12-22 16:48:45,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:45,383 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 2408 transitions. [2021-12-22 16:48:45,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2408 transitions. [2021-12-22 16:48:45,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:48:45,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:45,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:45,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:45,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:45,594 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:45,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:45,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1742589310, now seen corresponding path program 4 times [2021-12-22 16:48:45,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:45,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564488046] [2021-12-22 16:48:45,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 16:48:45,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:45,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:45,596 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:45,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-22 16:48:45,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 16:48:45,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 16:48:45,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 16:48:45,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:48:47,928 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 16:48:47,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:48:47,928 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 16:48:47,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564488046] [2021-12-22 16:48:47,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564488046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:47,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:47,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:48:47,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840190616] [2021-12-22 16:48:47,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:47,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:48:47,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 16:48:47,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:48:47,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-12-22 16:48:47,930 INFO L87 Difference]: Start difference. First operand 805 states and 2408 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:47,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:47,981 INFO L93 Difference]: Finished difference Result 804 states and 2405 transitions. [2021-12-22 16:48:47,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:48:47,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2021-12-22 16:48:47,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:47,985 INFO L225 Difference]: With dead ends: 804 [2021-12-22 16:48:47,985 INFO L226 Difference]: Without dead ends: 804 [2021-12-22 16:48:47,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-12-22 16:48:47,986 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:48:47,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 63 Unchecked, 0.0s Time] [2021-12-22 16:48:47,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-12-22 16:48:47,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 802. [2021-12-22 16:48:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 785 states have (on average 3.0560509554140127) internal successors, (2399), 801 states have internal predecessors, (2399), 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 16:48:48,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2399 transitions. [2021-12-22 16:48:48,016 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2399 transitions. Word has length 9 [2021-12-22 16:48:48,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:48,016 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 2399 transitions. [2021-12-22 16:48:48,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:48:48,016 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2399 transitions. [2021-12-22 16:48:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:48:48,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:48,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:48,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:48,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:48,218 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-22 16:48:48,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:48,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1265797648, now seen corresponding path program 1 times [2021-12-22 16:48:48,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 16:48:48,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105639513] [2021-12-22 16:48:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:48,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 16:48:48,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 16:48:48,220 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 16:48:48,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-22 16:48:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 16:48:48,296 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 16:48:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 16:48:48,369 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-22 16:48:48,369 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 16:48:48,370 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATION (17 of 18 remaining) [2021-12-22 16:48:48,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2021-12-22 16:48:48,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (15 of 18 remaining) [2021-12-22 16:48:48,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (14 of 18 remaining) [2021-12-22 16:48:48,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (13 of 18 remaining) [2021-12-22 16:48:48,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (12 of 18 remaining) [2021-12-22 16:48:48,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2021-12-22 16:48:48,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2021-12-22 16:48:48,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2021-12-22 16:48:48,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (8 of 18 remaining) [2021-12-22 16:48:48,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (7 of 18 remaining) [2021-12-22 16:48:48,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATION (6 of 18 remaining) [2021-12-22 16:48:48,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATION (5 of 18 remaining) [2021-12-22 16:48:48,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATION (4 of 18 remaining) [2021-12-22 16:48:48,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATION (3 of 18 remaining) [2021-12-22 16:48:48,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATION (2 of 18 remaining) [2021-12-22 16:48:48,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATION (1 of 18 remaining) [2021-12-22 16:48:48,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATION (0 of 18 remaining) [2021-12-22 16:48:48,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-22 16:48:48,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 16:48:48,576 INFO L732 BasicCegarLoop]: Path program histogram: [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:48,580 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-22 16:48:48,580 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 16:48:48,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:48:48 BasicIcfg [2021-12-22 16:48:48,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 16:48:48,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 16:48:48,603 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 16:48:48,603 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 16:48:48,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:48:29" (3/4) ... [2021-12-22 16:48:48,605 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-22 16:48:48,637 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 16:48:48,637 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 16:48:48,638 INFO L158 Benchmark]: Toolchain (without parser) took 20295.09ms. Allocated memory was 54.5MB in the beginning and 119.5MB in the end (delta: 65.0MB). Free memory was 31.0MB in the beginning and 66.8MB in the end (delta: -35.8MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2021-12-22 16:48:48,638 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory was 36.4MB in the beginning and 36.3MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 16:48:48,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 673.38ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.8MB in the beginning and 36.3MB in the end (delta: -5.5MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2021-12-22 16:48:48,638 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.60ms. Allocated memory is still 67.1MB. Free memory was 36.3MB in the beginning and 33.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 16:48:48,639 INFO L158 Benchmark]: Boogie Preprocessor took 54.40ms. Allocated memory is still 67.1MB. Free memory was 33.9MB in the beginning and 32.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 16:48:48,639 INFO L158 Benchmark]: RCFGBuilder took 506.60ms. Allocated memory is still 67.1MB. Free memory was 32.1MB in the beginning and 36.4MB in the end (delta: -4.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 16:48:48,639 INFO L158 Benchmark]: TraceAbstraction took 18952.58ms. Allocated memory was 67.1MB in the beginning and 119.5MB in the end (delta: 52.4MB). Free memory was 36.1MB in the beginning and 70.9MB in the end (delta: -34.8MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2021-12-22 16:48:48,640 INFO L158 Benchmark]: Witness Printer took 34.04ms. Allocated memory is still 119.5MB. Free memory was 69.9MB in the beginning and 66.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 16:48:48,641 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 54.5MB. Free memory was 36.4MB in the beginning and 36.3MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 673.38ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.8MB in the beginning and 36.3MB in the end (delta: -5.5MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.60ms. Allocated memory is still 67.1MB. Free memory was 36.3MB in the beginning and 33.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.40ms. Allocated memory is still 67.1MB. Free memory was 33.9MB in the beginning and 32.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 506.60ms. Allocated memory is still 67.1MB. Free memory was 32.1MB in the beginning and 36.4MB in the end (delta: -4.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * TraceAbstraction took 18952.58ms. Allocated memory was 67.1MB in the beginning and 119.5MB in the end (delta: 52.4MB). Free memory was 36.1MB in the beginning and 70.9MB in the end (delta: -34.8MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * Witness Printer took 34.04ms. Allocated memory is still 119.5MB. Free memory was 69.9MB in the beginning and 66.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8s, 103 PlacesBefore, 45 PlacesAfterwards, 105 TransitionsBefore, 45 TransitionsAfterwards, 2546 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 86 TotalNumberOfCompositions, 7972 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2983, positive: 2730, positive conditional: 0, positive unconditional: 2730, negative: 253, negative conditional: 0, negative unconditional: 253, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1339, positive: 1302, positive conditional: 0, positive unconditional: 1302, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1339, positive: 1290, positive conditional: 0, positive unconditional: 1290, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 375, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 347, negative conditional: 0, negative unconditional: 347, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2983, positive: 1428, positive conditional: 0, positive unconditional: 1428, negative: 216, negative conditional: 0, negative unconditional: 216, unknown: 1339, unknown conditional: 0, unknown unconditional: 1339] , Statistics on independence cache: Total cache size (in pairs): 201, Positive cache size: 176, Positive conditional cache size: 0, Positive unconditional cache size: 176, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25 - 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: 1049]: 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; [L1040] 0 int x, y, z; [L1068] 0 size = __VERIFIER_nondet_int() [L1069] COND FALSE 0 !(size < 1 || size > 20) [L1072] 0 int *a = (int *)malloc(size); [L1073] 0 pthread_t id1, id2; [L1074] 0 ind = 0 [L1075] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [\old(argc)=5, a={1:0}, arg={1:0}, argc=5, argv={9:6}, argv={9:6}, i=1, id1={7:0}, id2={3:0}, ind=0, j=2, pthread_create(&id1, ((void *)0), t1, a)=-1, size=2, x=0, y=0, z=0] [L1042] 1 x = 1 VAL [arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=0, z=0] [L1043] 1 y = 1 [L1044] 1 int *a = (int *)arg; VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1045] COND FALSE 1 !(y == 1 && z) VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1047] COND TRUE 1 ind < size - 1 VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1048] 1 ++ind [L1049] 1 a[ind] = i - UnprovableResult [Line: 1067]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1076]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1076]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1075]: 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: 1076]: 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: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: 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, 131 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 18.8s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 230 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 230 mSDsluCounter, 707 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 674 IncrementalHoareTripleChecker+Unchecked, 851 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 386 IncrementalHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 216 mSDtfsCounter, 386 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1135occurred in iteration=0, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 7 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 88 ConstructedInterpolants, 71 QuantifiedInterpolants, 3280 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1110 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 16:48:48,672 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)