./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.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 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 06:35:54,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 06:35:54,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 06:35:54,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 06:35:54,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 06:35:54,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 06:35:54,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 06:35:54,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 06:35:54,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 06:35:54,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 06:35:54,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 06:35:54,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 06:35:54,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 06:35:54,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 06:35:54,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 06:35:54,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 06:35:54,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 06:35:54,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 06:35:54,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 06:35:54,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 06:35:54,170 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 06:35:54,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 06:35:54,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 06:35:54,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 06:35:54,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 06:35:54,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 06:35:54,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 06:35:54,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 06:35:54,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 06:35:54,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 06:35:54,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 06:35:54,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 06:35:54,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 06:35:54,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 06:35:54,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 06:35:54,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 06:35:54,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 06:35:54,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 06:35:54,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 06:35:54,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 06:35:54,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 06:35:54,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 06:35:54,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-14 06:35:54,217 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 06:35:54,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 06:35:54,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 06:35:54,218 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 06:35:54,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 06:35:54,219 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 06:35:54,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 06:35:54,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 06:35:54,219 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 06:35:54,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 06:35:54,220 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 06:35:54,220 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 06:35:54,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 06:35:54,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 06:35:54,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 06:35:54,223 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 06:35:54,223 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 06:35:54,223 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 06:35:54,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 06:35:54,225 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 06:35:54,225 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 06:35:54,225 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 06:35:54,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 06:35:54,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 06:35:54,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 06:35:54,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:35:54,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 06:35:54,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 06:35:54,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 06:35:54,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 06:35:54,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c [2022-07-14 06:35:54,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 06:35:54,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 06:35:54,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 06:35:54,444 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 06:35:54,445 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 06:35:54,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2022-07-14 06:35:54,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9116d0f7b/1d64f062595847d6bb95ca8f286f595d/FLAGc73437e25 [2022-07-14 06:35:54,854 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 06:35:54,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2022-07-14 06:35:54,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9116d0f7b/1d64f062595847d6bb95ca8f286f595d/FLAGc73437e25 [2022-07-14 06:35:54,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9116d0f7b/1d64f062595847d6bb95ca8f286f595d [2022-07-14 06:35:54,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 06:35:54,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 06:35:54,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 06:35:54,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 06:35:54,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 06:35:54,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:35:54" (1/1) ... [2022-07-14 06:35:54,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e80c091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:54, skipping insertion in model container [2022-07-14 06:35:54,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:35:54" (1/1) ... [2022-07-14 06:35:54,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 06:35:54,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:35:55,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:35:55,245 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-14 06:35:55,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77cd5cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:55, skipping insertion in model container [2022-07-14 06:35:55,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 06:35:55,246 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-14 06:35:55,248 INFO L158 Benchmark]: Toolchain (without parser) took 365.25ms. Allocated memory is still 117.4MB. Free memory was 86.8MB in the beginning and 88.1MB in the end (delta: -1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 06:35:55,248 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 06:35:55,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.21ms. Allocated memory is still 117.4MB. Free memory was 86.5MB in the beginning and 88.1MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 06:35:55,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.21ms. Allocated memory is still 117.4MB. Free memory was 86.5MB in the beginning and 88.1MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.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 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 06:35:56,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 06:35:56,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 06:35:56,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 06:35:56,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 06:35:56,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 06:35:56,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 06:35:56,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 06:35:56,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 06:35:56,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 06:35:56,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 06:35:56,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 06:35:56,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 06:35:56,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 06:35:56,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 06:35:56,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 06:35:56,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 06:35:56,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 06:35:56,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 06:35:56,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 06:35:56,881 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 06:35:56,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 06:35:56,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 06:35:56,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 06:35:56,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 06:35:56,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 06:35:56,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 06:35:56,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 06:35:56,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 06:35:56,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 06:35:56,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 06:35:56,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 06:35:56,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 06:35:56,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 06:35:56,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 06:35:56,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 06:35:56,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 06:35:56,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 06:35:56,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 06:35:56,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 06:35:56,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 06:35:56,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 06:35:56,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-14 06:35:56,930 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 06:35:56,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 06:35:56,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 06:35:56,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 06:35:56,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 06:35:56,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 06:35:56,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 06:35:56,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 06:35:56,933 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 06:35:56,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 06:35:56,934 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 06:35:56,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 06:35:56,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 06:35:56,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 06:35:56,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 06:35:56,934 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 06:35:56,935 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 06:35:56,935 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 06:35:56,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 06:35:56,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 06:35:56,935 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 06:35:56,935 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 06:35:56,935 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 06:35:56,936 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 06:35:56,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 06:35:56,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 06:35:56,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 06:35:56,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:35:56,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 06:35:56,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 06:35:56,937 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 06:35:56,937 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 06:35:56,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 06:35:56,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c [2022-07-14 06:35:57,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 06:35:57,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 06:35:57,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 06:35:57,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 06:35:57,245 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 06:35:57,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2022-07-14 06:35:57,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92041e6ff/a665387bcd12432dbc03f1b664c83c25/FLAGc60e39022 [2022-07-14 06:35:57,767 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 06:35:57,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2022-07-14 06:35:57,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92041e6ff/a665387bcd12432dbc03f1b664c83c25/FLAGc60e39022 [2022-07-14 06:35:58,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92041e6ff/a665387bcd12432dbc03f1b664c83c25 [2022-07-14 06:35:58,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 06:35:58,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 06:35:58,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 06:35:58,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 06:35:58,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 06:35:58,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:35:58" (1/1) ... [2022-07-14 06:35:58,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6a8ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58, skipping insertion in model container [2022-07-14 06:35:58,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:35:58" (1/1) ... [2022-07-14 06:35:58,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 06:35:58,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:35:58,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:35:58,493 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 06:35:58,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:35:58,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:35:58,533 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 06:35:58,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:35:58,619 INFO L208 MainTranslator]: Completed translation [2022-07-14 06:35:58,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58 WrapperNode [2022-07-14 06:35:58,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 06:35:58,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 06:35:58,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 06:35:58,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 06:35:58,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58" (1/1) ... [2022-07-14 06:35:58,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58" (1/1) ... [2022-07-14 06:35:58,681 INFO L137 Inliner]: procedures = 165, calls = 69, calls flagged for inlining = 23, calls inlined = 15, statements flattened = 99 [2022-07-14 06:35:58,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 06:35:58,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 06:35:58,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 06:35:58,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 06:35:58,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58" (1/1) ... [2022-07-14 06:35:58,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58" (1/1) ... [2022-07-14 06:35:58,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58" (1/1) ... [2022-07-14 06:35:58,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58" (1/1) ... [2022-07-14 06:35:58,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58" (1/1) ... [2022-07-14 06:35:58,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58" (1/1) ... [2022-07-14 06:35:58,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58" (1/1) ... [2022-07-14 06:35:58,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 06:35:58,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 06:35:58,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 06:35:58,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 06:35:58,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58" (1/1) ... [2022-07-14 06:35:58,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:35:58,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 06:35:58,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 06:35:58,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 06:35:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-14 06:35:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-07-14 06:35:58,783 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-07-14 06:35:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 06:35:58,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 06:35:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 06:35:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 06:35:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 06:35:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 06:35:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 06:35:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 06:35:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 06:35:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 06:35:58,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 06:35:58,913 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 06:35:58,915 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 06:35:59,156 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 06:35:59,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 06:35:59,167 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 06:35:59,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:35:59 BoogieIcfgContainer [2022-07-14 06:35:59,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 06:35:59,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 06:35:59,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 06:35:59,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 06:35:59,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 06:35:58" (1/3) ... [2022-07-14 06:35:59,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21add379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:35:59, skipping insertion in model container [2022-07-14 06:35:59,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:35:58" (2/3) ... [2022-07-14 06:35:59,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21add379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:35:59, skipping insertion in model container [2022-07-14 06:35:59,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:35:59" (3/3) ... [2022-07-14 06:35:59,175 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_1-2.i [2022-07-14 06:35:59,185 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 06:35:59,185 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2022-07-14 06:35:59,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 06:35:59,229 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6ef04f98, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6ff88a1b [2022-07-14 06:35:59,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-07-14 06:35:59,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 69 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:35:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 06:35:59,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:35:59,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:35:59,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:35:59,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:35:59,244 INFO L85 PathProgramCache]: Analyzing trace with hash -668549309, now seen corresponding path program 1 times [2022-07-14 06:35:59,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:35:59,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894794291] [2022-07-14 06:35:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:35:59,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:35:59,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:35:59,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:35:59,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-14 06:35:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:35:59,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 06:35:59,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:35:59,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 06:35:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:35:59,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:35:59,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:35:59,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894794291] [2022-07-14 06:35:59,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894794291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:35:59,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:35:59,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:35:59,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116052666] [2022-07-14 06:35:59,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:35:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:35:59,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:35:59,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:35:59,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:35:59,584 INFO L87 Difference]: Start difference. First operand has 73 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 69 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:35:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:35:59,982 INFO L93 Difference]: Finished difference Result 181 states and 196 transitions. [2022-07-14 06:35:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:35:59,986 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-07-14 06:35:59,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:35:59,994 INFO L225 Difference]: With dead ends: 181 [2022-07-14 06:35:59,994 INFO L226 Difference]: Without dead ends: 173 [2022-07-14 06:35:59,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:36:00,005 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 139 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:00,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 320 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:36:00,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-14 06:36:00,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 76. [2022-07-14 06:36:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.58) internal successors, (79), 71 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 06:36:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2022-07-14 06:36:00,043 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 10 [2022-07-14 06:36:00,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:00,043 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2022-07-14 06:36:00,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2022-07-14 06:36:00,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 06:36:00,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:00,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:00,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:00,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:00,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:00,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:00,255 INFO L85 PathProgramCache]: Analyzing trace with hash -639920158, now seen corresponding path program 1 times [2022-07-14 06:36:00,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:00,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777146998] [2022-07-14 06:36:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:00,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:00,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:00,257 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:00,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-14 06:36:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:00,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 06:36:00,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:00,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:00,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:00,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777146998] [2022-07-14 06:36:00,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777146998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:00,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:00,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:36:00,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902842216] [2022-07-14 06:36:00,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:00,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 06:36:00,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:00,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 06:36:00,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:36:00,344 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:00,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:00,365 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2022-07-14 06:36:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:36:00,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-07-14 06:36:00,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:00,367 INFO L225 Difference]: With dead ends: 112 [2022-07-14 06:36:00,367 INFO L226 Difference]: Without dead ends: 112 [2022-07-14 06:36:00,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:36:00,368 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 40 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:00,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 303 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:00,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-14 06:36:00,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 74. [2022-07-14 06:36:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 69 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 06:36:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2022-07-14 06:36:00,395 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 10 [2022-07-14 06:36:00,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:00,396 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2022-07-14 06:36:00,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:00,396 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2022-07-14 06:36:00,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 06:36:00,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:00,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:00,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:00,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:00,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:00,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:00,606 INFO L85 PathProgramCache]: Analyzing trace with hash 749807950, now seen corresponding path program 1 times [2022-07-14 06:36:00,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:00,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107423520] [2022-07-14 06:36:00,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:00,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:00,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:00,609 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:00,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-14 06:36:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:00,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:36:00,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:00,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 06:36:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:00,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:00,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:00,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107423520] [2022-07-14 06:36:00,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107423520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:00,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:00,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 06:36:00,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699523253] [2022-07-14 06:36:00,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:00,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:36:00,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:00,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:36:00,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:36:00,788 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:01,064 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2022-07-14 06:36:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:36:01,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-07-14 06:36:01,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:01,066 INFO L225 Difference]: With dead ends: 149 [2022-07-14 06:36:01,066 INFO L226 Difference]: Without dead ends: 149 [2022-07-14 06:36:01,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:36:01,067 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 115 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:01,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 427 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:36:01,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-07-14 06:36:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 73. [2022-07-14 06:36:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.530612244897959) internal successors, (75), 68 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 06:36:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2022-07-14 06:36:01,071 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 11 [2022-07-14 06:36:01,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:01,071 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2022-07-14 06:36:01,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:01,071 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2022-07-14 06:36:01,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-14 06:36:01,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:01,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:01,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:01,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:01,278 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:01,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:01,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1769183241, now seen corresponding path program 1 times [2022-07-14 06:36:01,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:01,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875717727] [2022-07-14 06:36:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:01,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:01,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:01,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:01,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-14 06:36:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:01,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:36:01,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:01,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:01,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:01,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875717727] [2022-07-14 06:36:01,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875717727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:01,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:01,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:36:01,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873850624] [2022-07-14 06:36:01,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:01,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 06:36:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 06:36:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:36:01,366 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:01,385 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2022-07-14 06:36:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:36:01,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-07-14 06:36:01,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:01,387 INFO L225 Difference]: With dead ends: 111 [2022-07-14 06:36:01,387 INFO L226 Difference]: Without dead ends: 111 [2022-07-14 06:36:01,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:36:01,390 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 56 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:01,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 388 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:01,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-07-14 06:36:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2022-07-14 06:36:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.510204081632653) internal successors, (74), 68 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 06:36:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2022-07-14 06:36:01,402 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 12 [2022-07-14 06:36:01,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:01,402 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2022-07-14 06:36:01,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:01,403 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2022-07-14 06:36:01,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-14 06:36:01,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:01,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:01,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:01,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:01,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:01,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:01,616 INFO L85 PathProgramCache]: Analyzing trace with hash -782973720, now seen corresponding path program 1 times [2022-07-14 06:36:01,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:01,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086787518] [2022-07-14 06:36:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:01,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:01,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:01,622 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:01,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-14 06:36:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:01,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 06:36:01,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:01,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:01,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:01,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086787518] [2022-07-14 06:36:01,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086787518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:01,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:01,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:36:01,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856201145] [2022-07-14 06:36:01,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:01,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:36:01,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:01,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:36:01,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:36:01,713 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:01,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:01,741 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2022-07-14 06:36:01,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:36:01,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-07-14 06:36:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:01,743 INFO L225 Difference]: With dead ends: 83 [2022-07-14 06:36:01,743 INFO L226 Difference]: Without dead ends: 83 [2022-07-14 06:36:01,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:36:01,745 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 12 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:01,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 219 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:01,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-14 06:36:01,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2022-07-14 06:36:01,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 70 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 06:36:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2022-07-14 06:36:01,761 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 12 [2022-07-14 06:36:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:01,761 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2022-07-14 06:36:01,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2022-07-14 06:36:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-14 06:36:01,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:01,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:01,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:01,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:01,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:01,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:01,972 INFO L85 PathProgramCache]: Analyzing trace with hash -816988662, now seen corresponding path program 1 times [2022-07-14 06:36:01,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:01,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294201238] [2022-07-14 06:36:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:01,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:01,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:01,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:01,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-14 06:36:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:02,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:36:02,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:02,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:02,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:02,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294201238] [2022-07-14 06:36:02,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294201238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:02,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:02,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 06:36:02,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051743360] [2022-07-14 06:36:02,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:02,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:36:02,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:02,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:36:02,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:36:02,041 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:02,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:02,123 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-07-14 06:36:02,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:36:02,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-14 06:36:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:02,124 INFO L225 Difference]: With dead ends: 78 [2022-07-14 06:36:02,124 INFO L226 Difference]: Without dead ends: 69 [2022-07-14 06:36:02,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:36:02,124 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 8 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:02,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 166 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 06:36:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-14 06:36:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-07-14 06:36:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 65 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2022-07-14 06:36:02,127 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 14 [2022-07-14 06:36:02,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:02,127 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2022-07-14 06:36:02,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:02,127 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2022-07-14 06:36:02,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-14 06:36:02,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:02,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:02,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:02,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:02,336 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:02,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:02,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1730388367, now seen corresponding path program 1 times [2022-07-14 06:36:02,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:02,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493195953] [2022-07-14 06:36:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:02,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:02,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:02,338 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:02,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-14 06:36:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:02,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 06:36:02,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:02,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:02,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:02,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493195953] [2022-07-14 06:36:02,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493195953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:02,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:02,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:36:02,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883974869] [2022-07-14 06:36:02,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:02,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:36:02,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:02,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:36:02,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:36:02,419 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:02,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:02,430 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2022-07-14 06:36:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:36:02,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-14 06:36:02,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:02,432 INFO L225 Difference]: With dead ends: 70 [2022-07-14 06:36:02,432 INFO L226 Difference]: Without dead ends: 70 [2022-07-14 06:36:02,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:36:02,433 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:02,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 157 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:02,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-14 06:36:02,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-07-14 06:36:02,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 66 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2022-07-14 06:36:02,439 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 16 [2022-07-14 06:36:02,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:02,439 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2022-07-14 06:36:02,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:02,439 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2022-07-14 06:36:02,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-14 06:36:02,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:02,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:02,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:02,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:02,648 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:02,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:02,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2133276344, now seen corresponding path program 1 times [2022-07-14 06:36:02,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:02,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782751319] [2022-07-14 06:36:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:02,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:02,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:02,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:02,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-14 06:36:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:02,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:36:02,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:02,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:36:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:02,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:02,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782751319] [2022-07-14 06:36:02,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782751319] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:36:02,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:36:02,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-14 06:36:02,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363651922] [2022-07-14 06:36:02,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:36:02,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:36:02,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:02,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:36:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:36:02,814 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:02,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:02,888 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-07-14 06:36:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:36:02,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-14 06:36:02,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:02,889 INFO L225 Difference]: With dead ends: 73 [2022-07-14 06:36:02,889 INFO L226 Difference]: Without dead ends: 73 [2022-07-14 06:36:02,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:36:02,890 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 108 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:02,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 347 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:02,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-14 06:36:02,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-07-14 06:36:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.48) internal successors, (74), 69 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-07-14 06:36:02,892 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 17 [2022-07-14 06:36:02,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:02,893 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-07-14 06:36:02,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:02,893 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-07-14 06:36:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-14 06:36:02,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:02,893 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:02,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:03,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:03,099 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:03,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:03,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1089714225, now seen corresponding path program 2 times [2022-07-14 06:36:03,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:03,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335255084] [2022-07-14 06:36:03,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 06:36:03,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:03,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:03,102 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:03,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-14 06:36:03,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 06:36:03,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:36:03,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 06:36:03,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:03,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 06:36:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-14 06:36:03,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:03,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:03,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335255084] [2022-07-14 06:36:03,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335255084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:03,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:03,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 06:36:03,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667121195] [2022-07-14 06:36:03,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:03,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:36:03,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:03,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:36:03,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:36:03,249 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:03,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:03,542 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2022-07-14 06:36:03,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 06:36:03,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-07-14 06:36:03,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:03,543 INFO L225 Difference]: With dead ends: 137 [2022-07-14 06:36:03,543 INFO L226 Difference]: Without dead ends: 137 [2022-07-14 06:36:03,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-14 06:36:03,544 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 143 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:03,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 393 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:36:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-07-14 06:36:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 72. [2022-07-14 06:36:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 50 states have (on average 1.46) internal successors, (73), 68 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2022-07-14 06:36:03,546 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 20 [2022-07-14 06:36:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:03,546 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2022-07-14 06:36:03,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2022-07-14 06:36:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-14 06:36:03,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:03,547 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:03,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-07-14 06:36:03,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:03,753 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:03,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:03,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1089714226, now seen corresponding path program 1 times [2022-07-14 06:36:03,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:03,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380028282] [2022-07-14 06:36:03,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:03,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:03,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:03,755 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) [2022-07-14 06:36:03,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-14 06:36:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:03,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 06:36:03,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:03,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:03,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:36:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:04,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:04,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380028282] [2022-07-14 06:36:04,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380028282] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:36:04,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:36:04,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-14 06:36:04,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380436175] [2022-07-14 06:36:04,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:36:04,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 06:36:04,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:04,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 06:36:04,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-14 06:36:04,085 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:04,309 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-07-14 06:36:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 06:36:04,309 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-07-14 06:36:04,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:04,310 INFO L225 Difference]: With dead ends: 78 [2022-07-14 06:36:04,310 INFO L226 Difference]: Without dead ends: 78 [2022-07-14 06:36:04,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-07-14 06:36:04,311 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 106 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:04,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 563 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 06:36:04,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-14 06:36:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-07-14 06:36:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 74 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2022-07-14 06:36:04,314 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 20 [2022-07-14 06:36:04,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:04,314 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2022-07-14 06:36:04,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2022-07-14 06:36:04,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-14 06:36:04,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:04,315 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:04,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:04,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:04,520 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:04,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:04,521 INFO L85 PathProgramCache]: Analyzing trace with hash 335305426, now seen corresponding path program 2 times [2022-07-14 06:36:04,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:04,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445437366] [2022-07-14 06:36:04,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 06:36:04,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:04,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:04,522 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) [2022-07-14 06:36:04,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-14 06:36:04,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 06:36:04,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:36:04,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-14 06:36:04,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:04,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 06:36:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-14 06:36:04,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:04,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:04,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445437366] [2022-07-14 06:36:04,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445437366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:04,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:04,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 06:36:04,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063984881] [2022-07-14 06:36:04,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:04,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 06:36:04,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:04,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 06:36:04,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:36:04,749 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:05,083 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2022-07-14 06:36:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 06:36:05,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-07-14 06:36:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:05,085 INFO L225 Difference]: With dead ends: 156 [2022-07-14 06:36:05,085 INFO L226 Difference]: Without dead ends: 156 [2022-07-14 06:36:05,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-14 06:36:05,086 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 189 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:05,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 613 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:36:05,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-14 06:36:05,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 77. [2022-07-14 06:36:05,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 73 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:05,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2022-07-14 06:36:05,089 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 26 [2022-07-14 06:36:05,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:05,089 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2022-07-14 06:36:05,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:05,089 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2022-07-14 06:36:05,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-14 06:36:05,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:05,090 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:05,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:05,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:05,297 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:05,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:05,297 INFO L85 PathProgramCache]: Analyzing trace with hash 104459153, now seen corresponding path program 1 times [2022-07-14 06:36:05,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:05,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489372134] [2022-07-14 06:36:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:05,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:05,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:05,299 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) [2022-07-14 06:36:05,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-14 06:36:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:05,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:36:05,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:05,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:36:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:05,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:05,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489372134] [2022-07-14 06:36:05,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489372134] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:36:05,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:36:05,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-14 06:36:05,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010149787] [2022-07-14 06:36:05,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:36:05,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-14 06:36:05,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:05,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-14 06:36:05,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2022-07-14 06:36:05,910 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:06,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:06,260 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2022-07-14 06:36:06,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-14 06:36:06,260 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-07-14 06:36:06,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:06,261 INFO L225 Difference]: With dead ends: 83 [2022-07-14 06:36:06,261 INFO L226 Difference]: Without dead ends: 83 [2022-07-14 06:36:06,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2022-07-14 06:36:06,262 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 104 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:06,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 957 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:36:06,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-14 06:36:06,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-14 06:36:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 79 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:06,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2022-07-14 06:36:06,263 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 28 [2022-07-14 06:36:06,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:06,264 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2022-07-14 06:36:06,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:06,264 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2022-07-14 06:36:06,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-14 06:36:06,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:06,264 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:06,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:06,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:06,465 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:06,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:06,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1246096945, now seen corresponding path program 2 times [2022-07-14 06:36:06,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:06,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231840675] [2022-07-14 06:36:06,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 06:36:06,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:06,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:06,467 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) [2022-07-14 06:36:06,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-14 06:36:06,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 06:36:06,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:36:06,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 06:36:06,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:06,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:06,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:06,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231840675] [2022-07-14 06:36:06,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231840675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:06,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:06,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 06:36:06,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492763527] [2022-07-14 06:36:06,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:06,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:36:06,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:06,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:36:06,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:36:06,621 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:06,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:06,640 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2022-07-14 06:36:06,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:36:06,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-07-14 06:36:06,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:06,642 INFO L225 Difference]: With dead ends: 83 [2022-07-14 06:36:06,642 INFO L226 Difference]: Without dead ends: 83 [2022-07-14 06:36:06,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:36:06,644 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 95 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:06,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 228 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:06,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-14 06:36:06,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-14 06:36:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 79 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2022-07-14 06:36:06,646 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 34 [2022-07-14 06:36:06,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:06,646 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2022-07-14 06:36:06,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:06,646 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2022-07-14 06:36:06,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-14 06:36:06,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:06,647 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:06,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:06,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:06,854 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:06,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash 652031296, now seen corresponding path program 1 times [2022-07-14 06:36:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:06,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015374556] [2022-07-14 06:36:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:06,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:06,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:06,856 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) [2022-07-14 06:36:06,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-14 06:36:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:06,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 06:36:06,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:07,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 06:36:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:07,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:07,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:07,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015374556] [2022-07-14 06:36:07,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015374556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:07,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:07,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 06:36:07,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095391481] [2022-07-14 06:36:07,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:07,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 06:36:07,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:07,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 06:36:07,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:36:07,085 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:07,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:07,305 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2022-07-14 06:36:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 06:36:07,305 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-14 06:36:07,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:07,306 INFO L225 Difference]: With dead ends: 87 [2022-07-14 06:36:07,306 INFO L226 Difference]: Without dead ends: 87 [2022-07-14 06:36:07,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-14 06:36:07,306 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 113 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:07,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 244 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:36:07,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-14 06:36:07,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2022-07-14 06:36:07,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 77 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:07,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2022-07-14 06:36:07,309 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 36 [2022-07-14 06:36:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:07,309 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2022-07-14 06:36:07,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2022-07-14 06:36:07,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-14 06:36:07,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:07,310 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:07,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:07,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:07,519 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:07,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:07,520 INFO L85 PathProgramCache]: Analyzing trace with hash 652031297, now seen corresponding path program 1 times [2022-07-14 06:36:07,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:07,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357627479] [2022-07-14 06:36:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:07,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:07,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:07,522 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) [2022-07-14 06:36:07,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-14 06:36:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:07,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-14 06:36:07,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:07,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 06:36:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:07,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:07,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:07,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357627479] [2022-07-14 06:36:07,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357627479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:07,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:07,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 06:36:07,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234833196] [2022-07-14 06:36:07,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:07,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 06:36:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:07,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 06:36:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:36:07,848 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:08,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:08,071 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2022-07-14 06:36:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 06:36:08,071 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-14 06:36:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:08,072 INFO L225 Difference]: With dead ends: 79 [2022-07-14 06:36:08,072 INFO L226 Difference]: Without dead ends: 79 [2022-07-14 06:36:08,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-14 06:36:08,073 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 147 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:08,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 278 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:36:08,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-14 06:36:08,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-07-14 06:36:08,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 75 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2022-07-14 06:36:08,075 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 36 [2022-07-14 06:36:08,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:08,075 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2022-07-14 06:36:08,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2022-07-14 06:36:08,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-14 06:36:08,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:08,076 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:08,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:08,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:08,281 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:08,281 INFO L85 PathProgramCache]: Analyzing trace with hash 601347293, now seen corresponding path program 1 times [2022-07-14 06:36:08,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:08,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279710617] [2022-07-14 06:36:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:08,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:08,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:08,283 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) [2022-07-14 06:36:08,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-14 06:36:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:08,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 06:36:08,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:08,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:08,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:08,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279710617] [2022-07-14 06:36:08,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279710617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:08,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:08,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 06:36:08,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988402994] [2022-07-14 06:36:08,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:08,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:36:08,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:08,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:36:08,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:36:08,490 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:08,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:08,530 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2022-07-14 06:36:08,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:36:08,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-14 06:36:08,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:08,531 INFO L225 Difference]: With dead ends: 79 [2022-07-14 06:36:08,531 INFO L226 Difference]: Without dead ends: 79 [2022-07-14 06:36:08,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:36:08,531 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 138 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:08,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 213 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-14 06:36:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-07-14 06:36:08,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 74 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2022-07-14 06:36:08,533 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 36 [2022-07-14 06:36:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:08,533 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2022-07-14 06:36:08,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:36:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2022-07-14 06:36:08,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-14 06:36:08,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:08,534 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:08,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-07-14 06:36:08,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:08,743 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:08,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash -499536070, now seen corresponding path program 1 times [2022-07-14 06:36:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:08,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781822005] [2022-07-14 06:36:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:08,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:08,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:08,745 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) [2022-07-14 06:36:08,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-14 06:36:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:08,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-14 06:36:08,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:08,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 06:36:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:09,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:09,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:09,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781822005] [2022-07-14 06:36:09,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781822005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:09,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:09,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 06:36:09,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805350484] [2022-07-14 06:36:09,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:09,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 06:36:09,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:09,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 06:36:09,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:36:09,007 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:09,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:09,133 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2022-07-14 06:36:09,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 06:36:09,134 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-14 06:36:09,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:09,134 INFO L225 Difference]: With dead ends: 87 [2022-07-14 06:36:09,134 INFO L226 Difference]: Without dead ends: 87 [2022-07-14 06:36:09,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-07-14 06:36:09,135 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 120 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:09,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 155 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-07-14 06:36:09,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-14 06:36:09,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2022-07-14 06:36:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 72 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:09,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2022-07-14 06:36:09,147 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 44 [2022-07-14 06:36:09,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:09,147 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2022-07-14 06:36:09,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:09,147 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2022-07-14 06:36:09,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-14 06:36:09,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:09,148 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:09,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:09,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:09,359 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:09,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:09,359 INFO L85 PathProgramCache]: Analyzing trace with hash -499536069, now seen corresponding path program 1 times [2022-07-14 06:36:09,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:09,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50403478] [2022-07-14 06:36:09,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:09,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:09,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:09,364 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:09,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-14 06:36:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:09,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-14 06:36:09,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:09,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 06:36:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:09,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:09,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:09,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50403478] [2022-07-14 06:36:09,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50403478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:09,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:09,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 06:36:09,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412896585] [2022-07-14 06:36:09,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:09,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 06:36:09,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:09,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 06:36:09,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:36:09,758 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:09,940 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2022-07-14 06:36:09,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 06:36:09,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-14 06:36:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:09,941 INFO L225 Difference]: With dead ends: 79 [2022-07-14 06:36:09,941 INFO L226 Difference]: Without dead ends: 79 [2022-07-14 06:36:09,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-14 06:36:09,941 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 154 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:09,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 213 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2022-07-14 06:36:09,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-14 06:36:09,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2022-07-14 06:36:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 70 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:09,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2022-07-14 06:36:09,944 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 44 [2022-07-14 06:36:09,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:09,944 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2022-07-14 06:36:09,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2022-07-14 06:36:09,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-14 06:36:09,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:09,944 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:09,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-14 06:36:10,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:10,145 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:10,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash 983653340, now seen corresponding path program 1 times [2022-07-14 06:36:10,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:10,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666536900] [2022-07-14 06:36:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:10,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:10,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:10,147 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:10,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-14 06:36:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:10,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 06:36:10,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:10,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:10,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:10,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666536900] [2022-07-14 06:36:10,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666536900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:10,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:10,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 06:36:10,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467404388] [2022-07-14 06:36:10,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:10,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:36:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:36:10,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:36:10,386 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:10,417 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2022-07-14 06:36:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:36:10,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2022-07-14 06:36:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:10,419 INFO L225 Difference]: With dead ends: 75 [2022-07-14 06:36:10,419 INFO L226 Difference]: Without dead ends: 75 [2022-07-14 06:36:10,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:36:10,419 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 105 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:10,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 214 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:10,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-14 06:36:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-07-14 06:36:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 70 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:10,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2022-07-14 06:36:10,422 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 46 [2022-07-14 06:36:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:10,422 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2022-07-14 06:36:10,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:10,422 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2022-07-14 06:36:10,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-14 06:36:10,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:10,423 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:10,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:10,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:10,635 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:10,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:10,636 INFO L85 PathProgramCache]: Analyzing trace with hash 567271038, now seen corresponding path program 1 times [2022-07-14 06:36:10,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:10,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852269206] [2022-07-14 06:36:10,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:10,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:10,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:10,638 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:10,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-14 06:36:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:10,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-14 06:36:10,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:10,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 06:36:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:10,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:10,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:10,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852269206] [2022-07-14 06:36:10,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852269206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:10,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:10,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 06:36:10,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021419609] [2022-07-14 06:36:10,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:10,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 06:36:10,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:10,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 06:36:10,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:36:10,993 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:11,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:11,169 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2022-07-14 06:36:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 06:36:11,170 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2022-07-14 06:36:11,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:11,170 INFO L225 Difference]: With dead ends: 79 [2022-07-14 06:36:11,170 INFO L226 Difference]: Without dead ends: 79 [2022-07-14 06:36:11,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-07-14 06:36:11,171 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 96 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:11,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 221 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-07-14 06:36:11,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-14 06:36:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2022-07-14 06:36:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 68 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2022-07-14 06:36:11,173 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 50 [2022-07-14 06:36:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:11,173 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2022-07-14 06:36:11,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2022-07-14 06:36:11,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-14 06:36:11,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:11,173 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:11,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:11,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:11,383 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:11,383 INFO L85 PathProgramCache]: Analyzing trace with hash 567271039, now seen corresponding path program 1 times [2022-07-14 06:36:11,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:11,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083009179] [2022-07-14 06:36:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:11,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:11,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:11,384 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:11,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-14 06:36:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:11,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-14 06:36:11,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:11,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 06:36:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:11,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:11,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:11,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083009179] [2022-07-14 06:36:11,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083009179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:11,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:11,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-14 06:36:11,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424131125] [2022-07-14 06:36:11,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:11,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 06:36:11,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 06:36:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-14 06:36:11,909 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:12,135 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2022-07-14 06:36:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 06:36:12,136 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2022-07-14 06:36:12,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:12,136 INFO L225 Difference]: With dead ends: 77 [2022-07-14 06:36:12,136 INFO L226 Difference]: Without dead ends: 77 [2022-07-14 06:36:12,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-07-14 06:36:12,137 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 153 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:12,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 207 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2022-07-14 06:36:12,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-14 06:36:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2022-07-14 06:36:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 66 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2022-07-14 06:36:12,139 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 50 [2022-07-14 06:36:12,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:12,139 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2022-07-14 06:36:12,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:12,139 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2022-07-14 06:36:12,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-14 06:36:12,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:12,139 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:12,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:12,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:12,349 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:12,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:12,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1124776918, now seen corresponding path program 1 times [2022-07-14 06:36:12,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:12,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370397432] [2022-07-14 06:36:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:12,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:12,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:12,351 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:12,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-14 06:36:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:12,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-14 06:36:12,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:12,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:12,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:12,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370397432] [2022-07-14 06:36:12,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370397432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:12,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:12,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 06:36:12,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760282410] [2022-07-14 06:36:12,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:12,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 06:36:12,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:12,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 06:36:12,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-14 06:36:12,895 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 11 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:13,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:13,065 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2022-07-14 06:36:13,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 06:36:13,067 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2022-07-14 06:36:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:13,068 INFO L225 Difference]: With dead ends: 76 [2022-07-14 06:36:13,068 INFO L226 Difference]: Without dead ends: 76 [2022-07-14 06:36:13,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-14 06:36:13,069 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 160 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:13,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 209 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 6 Unchecked, 0.1s Time] [2022-07-14 06:36:13,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-14 06:36:13,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2022-07-14 06:36:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 62 states have (on average 1.096774193548387) internal successors, (68), 65 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2022-07-14 06:36:13,070 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 53 [2022-07-14 06:36:13,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:13,070 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2022-07-14 06:36:13,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:13,071 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2022-07-14 06:36:13,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-14 06:36:13,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:13,071 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:13,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:13,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:13,271 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:13,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:13,272 INFO L85 PathProgramCache]: Analyzing trace with hash 350499748, now seen corresponding path program 1 times [2022-07-14 06:36:13,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:13,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887961652] [2022-07-14 06:36:13,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:13,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:13,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:13,273 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:13,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-14 06:36:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:13,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-14 06:36:13,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:13,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:13,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:13,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:13,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:13,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:13,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:13,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:13,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:13,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:13,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:36:13,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:36:13,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-07-14 06:36:17,740 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1565 (_ BitVec 8)) (v_ArrVal_1567 (_ BitVec 8))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_1565) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_1567)))) is different from true [2022-07-14 06:36:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:17,770 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:36:17,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 71 [2022-07-14 06:36:17,959 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:36:17,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 26 [2022-07-14 06:36:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:18,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:18,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:18,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887961652] [2022-07-14 06:36:18,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887961652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:18,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:18,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-14 06:36:18,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472742978] [2022-07-14 06:36:18,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:18,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-14 06:36:18,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:18,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-14 06:36:18,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=334, Unknown=2, NotChecked=36, Total=420 [2022-07-14 06:36:18,050 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:18,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:18,810 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2022-07-14 06:36:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-14 06:36:18,811 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2022-07-14 06:36:18,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:18,811 INFO L225 Difference]: With dead ends: 70 [2022-07-14 06:36:18,811 INFO L226 Difference]: Without dead ends: 70 [2022-07-14 06:36:18,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=136, Invalid=858, Unknown=2, NotChecked=60, Total=1056 [2022-07-14 06:36:18,812 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 100 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:18,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 455 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 89 Unchecked, 0.3s Time] [2022-07-14 06:36:18,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-14 06:36:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-07-14 06:36:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 65 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:18,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2022-07-14 06:36:18,814 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 54 [2022-07-14 06:36:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:18,814 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2022-07-14 06:36:18,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2022-07-14 06:36:18,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-14 06:36:18,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:18,815 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:18,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-07-14 06:36:19,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:19,024 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:19,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:19,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1105784610, now seen corresponding path program 1 times [2022-07-14 06:36:19,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:19,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925838417] [2022-07-14 06:36:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:19,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:19,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:19,025 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:19,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-14 06:36:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:19,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 120 conjunts are in the unsatisfiable core [2022-07-14 06:36:19,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:19,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-14 06:36:19,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-07-14 06:36:19,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:19,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:19,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:19,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:19,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:19,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:19,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:19,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:19,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:19,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:19,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:19,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:19,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:19,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:20,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:20,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:20,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:20,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:20,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:20,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:20,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:20,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:20,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:20,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:20,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:20,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:20,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-14 06:36:25,146 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1749 (_ BitVec 32)) (v_ArrVal_1748 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_1748) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_1749)) |c_#memory_$Pointer$.offset|)) is different from true [2022-07-14 06:36:25,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:25,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:25,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:25,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-14 06:36:25,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:25,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:25,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:25,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:25,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:25,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:25,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:25,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:25,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:25,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 45 [2022-07-14 06:36:25,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-14 06:36:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:25,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:36:26,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:26,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925838417] [2022-07-14 06:36:26,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925838417] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:36:26,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1206813017] [2022-07-14 06:36:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:26,059 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:36:26,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:36:26,061 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:36:26,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-07-14 06:36:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:26,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-14 06:36:26,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:26,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-14 06:36:26,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-07-14 06:36:26,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:26,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:26,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:26,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:26,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:26,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:26,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:26,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:26,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:26,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:26,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:26,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:26,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:26,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:26,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:26,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-14 06:36:29,920 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1944 (_ BitVec 32)) (v_ArrVal_1748 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_1748) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_1944)))) is different from true [2022-07-14 06:36:29,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:29,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:29,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:29,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-14 06:36:30,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 39 [2022-07-14 06:36:30,091 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:36:30,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-14 06:36:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:30,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:36:31,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1206813017] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:36:31,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:36:31,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37] total 42 [2022-07-14 06:36:31,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832882487] [2022-07-14 06:36:31,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:36:31,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-14 06:36:31,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:31,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-14 06:36:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2548, Unknown=3, NotChecked=206, Total=2970 [2022-07-14 06:36:31,104 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 43 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 41 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 06:36:35,555 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1944 (_ BitVec 32)) (v_ArrVal_1748 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_1748) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_1944)))) (exists ((v_ArrVal_1749 (_ BitVec 32)) (v_ArrVal_1748 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_1748) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_1749)) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-14 06:36:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:36,467 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2022-07-14 06:36:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-14 06:36:36,468 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 41 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-07-14 06:36:36,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:36,468 INFO L225 Difference]: With dead ends: 69 [2022-07-14 06:36:36,468 INFO L226 Difference]: Without dead ends: 69 [2022-07-14 06:36:36,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 85 SyntacticMatches, 8 SemanticMatches, 80 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=522, Invalid=5648, Unknown=4, NotChecked=468, Total=6642 [2022-07-14 06:36:36,471 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 227 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:36,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 598 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1433 Invalid, 0 Unknown, 211 Unchecked, 2.0s Time] [2022-07-14 06:36:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-14 06:36:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-07-14 06:36:36,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.064516129032258) internal successors, (66), 64 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2022-07-14 06:36:36,473 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 56 [2022-07-14 06:36:36,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:36,474 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2022-07-14 06:36:36,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 41 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 06:36:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2022-07-14 06:36:36,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-14 06:36:36,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:36,475 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:36,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-07-14 06:36:36,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2022-07-14 06:36:36,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 06:36:36,890 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:36,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:36,890 INFO L85 PathProgramCache]: Analyzing trace with hash -80415345, now seen corresponding path program 1 times [2022-07-14 06:36:36,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:36,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186289446] [2022-07-14 06:36:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:36,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:36,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:36,892 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:36,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-14 06:36:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:37,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 120 conjunts are in the unsatisfiable core [2022-07-14 06:36:37,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:37,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-14 06:36:37,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:37,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:37,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:37,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:37,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:37,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:37,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:37,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:37,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:37,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:37,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:37,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:37,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:37,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:37,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:37,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:38,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:38,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:38,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:38,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:38,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:38,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:38,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:38,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:38,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:38,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:38,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-14 06:36:43,240 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2139 (_ BitVec 32)) (v_ArrVal_2138 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2138) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2139)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-14 06:36:43,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:43,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:43,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:43,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-14 06:36:43,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:43,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:43,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:43,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:43,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:43,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:43,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:43,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:43,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:43,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 45 [2022-07-14 06:36:43,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-14 06:36:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:43,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:36:44,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:44,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186289446] [2022-07-14 06:36:44,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186289446] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:36:44,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1905169969] [2022-07-14 06:36:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:44,173 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:36:44,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:36:44,174 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:36:44,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-07-14 06:36:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:44,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-14 06:36:44,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:44,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-14 06:36:44,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:44,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:44,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:44,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:44,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:44,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:44,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:44,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:44,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:44,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:44,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:44,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:44,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:44,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:44,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:44,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:44,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:44,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:44,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:44,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:44,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:44,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:44,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:44,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:45,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-14 06:36:45,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:45,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:36:45,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:45,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-14 06:36:48,179 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2335 (_ BitVec 32)) (v_ArrVal_2138 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2138) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2335)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-14 06:36:48,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:48,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:48,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:48,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-14 06:36:48,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 39 [2022-07-14 06:36:48,376 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:36:48,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-14 06:36:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:36:48,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:36:49,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1905169969] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:36:49,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:36:49,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39] total 44 [2022-07-14 06:36:49,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691037801] [2022-07-14 06:36:49,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:36:49,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-14 06:36:49,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:49,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-14 06:36:49,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2637, Unknown=3, NotChecked=210, Total=3080 [2022-07-14 06:36:49,590 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 44 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 42 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 06:36:53,394 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2335 (_ BitVec 32)) (v_ArrVal_2138 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2138) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2335)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2139 (_ BitVec 32)) (v_ArrVal_2138 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2138) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2139)) |c_#memory_$Pointer$.base|))) is different from true [2022-07-14 06:36:54,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:54,028 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2022-07-14 06:36:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-14 06:36:54,028 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 42 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2022-07-14 06:36:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:54,029 INFO L225 Difference]: With dead ends: 65 [2022-07-14 06:36:54,029 INFO L226 Difference]: Without dead ends: 64 [2022-07-14 06:36:54,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 87 SyntacticMatches, 9 SemanticMatches, 67 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=449, Invalid=3849, Unknown=4, NotChecked=390, Total=4692 [2022-07-14 06:36:54,030 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 169 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:54,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 310 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1024 Invalid, 0 Unknown, 187 Unchecked, 1.8s Time] [2022-07-14 06:36:54,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-14 06:36:54,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-07-14 06:36:54,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:54,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2022-07-14 06:36:54,032 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 57 [2022-07-14 06:36:54,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:54,033 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2022-07-14 06:36:54,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 42 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 06:36:54,033 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2022-07-14 06:36:54,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-14 06:36:54,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:54,033 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:54,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:54,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-14 06:36:54,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:54,444 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-14 06:36:54,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 151088322, now seen corresponding path program 1 times [2022-07-14 06:36:54,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:54,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99873670] [2022-07-14 06:36:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:54,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:54,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:54,446 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:54,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-14 06:36:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:54,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-14 06:36:54,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:54,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2022-07-14 06:36:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:55,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:55,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:55,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99873670] [2022-07-14 06:36:55,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99873670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:55,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:55,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-14 06:36:55,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155971029] [2022-07-14 06:36:55,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:55,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 06:36:55,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:55,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 06:36:55,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-14 06:36:55,153 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 12 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:55,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:55,172 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2022-07-14 06:36:55,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 06:36:55,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2022-07-14 06:36:55,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:55,175 INFO L225 Difference]: With dead ends: 63 [2022-07-14 06:36:55,175 INFO L226 Difference]: Without dead ends: 0 [2022-07-14 06:36:55,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-14 06:36:55,175 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:55,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 202 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 76 Unchecked, 0.0s Time] [2022-07-14 06:36:55,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-14 06:36:55,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-14 06:36:55,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:36:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-14 06:36:55,176 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2022-07-14 06:36:55,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:55,176 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 06:36:55,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:55,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-14 06:36:55,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-14 06:36:55,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (20 of 21 remaining) [2022-07-14 06:36:55,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (19 of 21 remaining) [2022-07-14 06:36:55,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 21 remaining) [2022-07-14 06:36:55,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 21 remaining) [2022-07-14 06:36:55,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 21 remaining) [2022-07-14 06:36:55,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (10 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (9 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (8 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (7 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE (6 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE (5 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (4 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 21 remaining) [2022-07-14 06:36:55,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 21 remaining) [2022-07-14 06:36:55,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:55,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:55,392 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:55,393 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-14 06:36:55,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 06:36:55 BoogieIcfgContainer [2022-07-14 06:36:55,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-14 06:36:55,396 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 06:36:55,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 06:36:55,396 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 06:36:55,397 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:35:59" (3/4) ... [2022-07-14 06:36:55,399 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-14 06:36:55,405 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2022-07-14 06:36:55,406 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure LDV_INIT_LIST_HEAD [2022-07-14 06:36:55,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2022-07-14 06:36:55,414 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-14 06:36:55,414 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-14 06:36:55,414 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-14 06:36:55,451 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 06:36:55,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 06:36:55,452 INFO L158 Benchmark]: Toolchain (without parser) took 57328.83ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 51.4MB in the beginning and 24.9MB in the end (delta: 26.5MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. [2022-07-14 06:36:55,453 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 71.3MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 06:36:55,453 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.35ms. Allocated memory is still 71.3MB. Free memory was 51.2MB in the beginning and 36.2MB in the end (delta: 15.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-14 06:36:55,453 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.47ms. Allocated memory is still 71.3MB. Free memory was 36.2MB in the beginning and 33.5MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-14 06:36:55,453 INFO L158 Benchmark]: Boogie Preprocessor took 33.07ms. Allocated memory is still 71.3MB. Free memory was 33.5MB in the beginning and 31.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 06:36:55,454 INFO L158 Benchmark]: RCFGBuilder took 453.15ms. Allocated memory is still 71.3MB. Free memory was 31.4MB in the beginning and 38.6MB in the end (delta: -7.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-07-14 06:36:55,454 INFO L158 Benchmark]: TraceAbstraction took 56224.19ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 37.9MB in the beginning and 28.9MB in the end (delta: 9.0MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2022-07-14 06:36:55,454 INFO L158 Benchmark]: Witness Printer took 55.66ms. Allocated memory is still 88.1MB. Free memory was 28.4MB in the beginning and 24.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-14 06:36:55,463 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 71.3MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 496.35ms. Allocated memory is still 71.3MB. Free memory was 51.2MB in the beginning and 36.2MB in the end (delta: 15.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.47ms. Allocated memory is still 71.3MB. Free memory was 36.2MB in the beginning and 33.5MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.07ms. Allocated memory is still 71.3MB. Free memory was 33.5MB in the beginning and 31.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 453.15ms. Allocated memory is still 71.3MB. Free memory was 31.4MB in the beginning and 38.6MB in the end (delta: -7.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * TraceAbstraction took 56224.19ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 37.9MB in the beginning and 28.9MB in the end (delta: 9.0MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. * Witness Printer took 55.66ms. Allocated memory is still 88.1MB. Free memory was 28.4MB in the beginning and 24.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 73 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 56.2s, OverallIterations: 26, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2869 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2862 mSDsluCounter, 8600 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 607 IncrementalHoareTripleChecker+Unchecked, 6989 mSDsCounter, 240 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4819 IncrementalHoareTripleChecker+Invalid, 5666 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 240 mSolverCounterUnsat, 1611 mSDtfsCounter, 4819 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1183 GetRequests, 768 SyntacticMatches, 26 SemanticMatches, 389 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 2896 ImplicationChecksByTransitivity, 33.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=12, InterpolantAutomatonStates: 292, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 439 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 31.1s InterpolantComputationTime, 968 NumberOfCodeBlocks, 938 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1002 ConstructedInterpolants, 93 QuantifiedInterpolants, 7360 SizeOfPredicates, 439 NumberOfNonLiveVariables, 6322 ConjunctsInSsa, 854 ConjunctsInUnsatCore, 31 InterpolantComputations, 21 PerfectInterpolantSequences, 1697/2373 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 - AllSpecificationsHoldResult: All specifications hold 21 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-14 06:36:55,509 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 Result: TRUE