./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.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_2-2.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 beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 06:36:01,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 06:36:01,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 06:36:01,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 06:36:01,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 06:36:01,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 06:36:01,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 06:36:01,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 06:36:01,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 06:36:01,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 06:36:01,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 06:36:01,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 06:36:01,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 06:36:01,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 06:36:01,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 06:36:01,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 06:36:01,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 06:36:01,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 06:36:01,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 06:36:01,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 06:36:01,206 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 06:36:01,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 06:36:01,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 06:36:01,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 06:36:01,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 06:36:01,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 06:36:01,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 06:36:01,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 06:36:01,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 06:36:01,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 06:36:01,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 06:36:01,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 06:36:01,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 06:36:01,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 06:36:01,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 06:36:01,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 06:36:01,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 06:36:01,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 06:36:01,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 06:36:01,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 06:36:01,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 06:36:01,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 06:36:01,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-14 06:36:01,261 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 06:36:01,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 06:36:01,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 06:36:01,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 06:36:01,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 06:36:01,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 06:36:01,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 06:36:01,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 06:36:01,264 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 06:36:01,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 06:36:01,265 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 06:36:01,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 06:36:01,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 06:36:01,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 06:36:01,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 06:36:01,266 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 06:36:01,266 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 06:36:01,266 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 06:36:01,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 06:36:01,267 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 06:36:01,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 06:36:01,267 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 06:36:01,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 06:36:01,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 06:36:01,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 06:36:01,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:36:01,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 06:36:01,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 06:36:01,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 06:36:01,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 06:36:01,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d [2022-07-14 06:36:01,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 06:36:01,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 06:36:01,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 06:36:01,559 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 06:36:01,559 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 06:36:01,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2022-07-14 06:36:01,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde290aca/4e210bcd8c1f4255a701838aa4c86c9f/FLAG1f1dcedb9 [2022-07-14 06:36:02,148 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 06:36:02,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2022-07-14 06:36:02,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde290aca/4e210bcd8c1f4255a701838aa4c86c9f/FLAG1f1dcedb9 [2022-07-14 06:36:02,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde290aca/4e210bcd8c1f4255a701838aa4c86c9f [2022-07-14 06:36:02,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 06:36:02,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 06:36:02,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 06:36:02,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 06:36:02,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 06:36:02,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:36:02" (1/1) ... [2022-07-14 06:36:02,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a15f59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:02, skipping insertion in model container [2022-07-14 06:36:02,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:36:02" (1/1) ... [2022-07-14 06:36:02,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 06:36:02,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:36:02,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:36:02,881 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 06:36:02,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@405ed9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:02, skipping insertion in model container [2022-07-14 06:36:02,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 06:36:02,883 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-14 06:36:02,885 INFO L158 Benchmark]: Toolchain (without parser) took 439.75ms. Allocated memory is still 96.5MB. Free memory was 73.5MB in the beginning and 60.4MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-14 06:36:02,886 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 06:36:02,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.93ms. Allocated memory is still 96.5MB. Free memory was 73.4MB in the beginning and 60.4MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-14 06:36:02,888 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 437.93ms. Allocated memory is still 96.5MB. Free memory was 73.4MB in the beginning and 60.4MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. 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_2-2.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 beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 06:36:04,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 06:36:04,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 06:36:04,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 06:36:04,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 06:36:04,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 06:36:04,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 06:36:04,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 06:36:04,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 06:36:04,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 06:36:04,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 06:36:04,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 06:36:04,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 06:36:04,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 06:36:04,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 06:36:04,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 06:36:04,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 06:36:04,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 06:36:04,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 06:36:04,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 06:36:04,796 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 06:36:04,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 06:36:04,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 06:36:04,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 06:36:04,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 06:36:04,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 06:36:04,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 06:36:04,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 06:36:04,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 06:36:04,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 06:36:04,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 06:36:04,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 06:36:04,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 06:36:04,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 06:36:04,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 06:36:04,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 06:36:04,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 06:36:04,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 06:36:04,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 06:36:04,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 06:36:04,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 06:36:04,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 06:36:04,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-14 06:36:04,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 06:36:04,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 06:36:04,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 06:36:04,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 06:36:04,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 06:36:04,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 06:36:04,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 06:36:04,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 06:36:04,849 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 06:36:04,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 06:36:04,850 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 06:36:04,850 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 06:36:04,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 06:36:04,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 06:36:04,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 06:36:04,850 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 06:36:04,850 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 06:36:04,850 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 06:36:04,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 06:36:04,851 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 06:36:04,851 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 06:36:04,851 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 06:36:04,851 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 06:36:04,851 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 06:36:04,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 06:36:04,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 06:36:04,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 06:36:04,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:36:04,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 06:36:04,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 06:36:04,852 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 06:36:04,853 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 06:36:04,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 06:36:04,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d [2022-07-14 06:36:05,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 06:36:05,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 06:36:05,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 06:36:05,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 06:36:05,202 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 06:36:05,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2022-07-14 06:36:05,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96202a4dc/cda6336aaddb4da08adeb38cafd0919c/FLAGef766fff0 [2022-07-14 06:36:05,802 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 06:36:05,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2022-07-14 06:36:05,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96202a4dc/cda6336aaddb4da08adeb38cafd0919c/FLAGef766fff0 [2022-07-14 06:36:06,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96202a4dc/cda6336aaddb4da08adeb38cafd0919c [2022-07-14 06:36:06,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 06:36:06,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 06:36:06,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 06:36:06,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 06:36:06,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 06:36:06,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:36:06" (1/1) ... [2022-07-14 06:36:06,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4610bcd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06, skipping insertion in model container [2022-07-14 06:36:06,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:36:06" (1/1) ... [2022-07-14 06:36:06,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 06:36:06,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:36:06,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:36:06,729 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 06:36:06,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:36:06,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:36:06,790 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 06:36:06,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:36:06,873 INFO L208 MainTranslator]: Completed translation [2022-07-14 06:36:06,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06 WrapperNode [2022-07-14 06:36:06,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 06:36:06,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 06:36:06,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 06:36:06,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 06:36:06,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06" (1/1) ... [2022-07-14 06:36:06,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06" (1/1) ... [2022-07-14 06:36:06,969 INFO L137 Inliner]: procedures = 165, calls = 71, calls flagged for inlining = 23, calls inlined = 17, statements flattened = 120 [2022-07-14 06:36:06,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 06:36:06,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 06:36:06,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 06:36:06,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 06:36:06,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06" (1/1) ... [2022-07-14 06:36:06,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06" (1/1) ... [2022-07-14 06:36:06,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06" (1/1) ... [2022-07-14 06:36:07,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06" (1/1) ... [2022-07-14 06:36:07,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06" (1/1) ... [2022-07-14 06:36:07,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06" (1/1) ... [2022-07-14 06:36:07,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06" (1/1) ... [2022-07-14 06:36:07,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 06:36:07,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 06:36:07,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 06:36:07,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 06:36:07,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06" (1/1) ... [2022-07-14 06:36:07,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:36:07,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 06:36:07,064 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 06:36:07,070 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 06:36:07,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-14 06:36:07,104 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-07-14 06:36:07,104 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-07-14 06:36:07,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 06:36:07,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 06:36:07,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2022-07-14 06:36:07,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2022-07-14 06:36:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 06:36:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 06:36:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 06:36:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 06:36:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 06:36:07,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 06:36:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 06:36:07,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 06:36:07,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 06:36:07,254 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 06:36:07,255 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 06:36:07,628 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 06:36:07,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 06:36:07,636 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 06:36:07,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:36:07 BoogieIcfgContainer [2022-07-14 06:36:07,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 06:36:07,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 06:36:07,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 06:36:07,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 06:36:07,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 06:36:06" (1/3) ... [2022-07-14 06:36:07,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1911bf92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:36:07, skipping insertion in model container [2022-07-14 06:36:07,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:36:06" (2/3) ... [2022-07-14 06:36:07,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1911bf92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:36:07, skipping insertion in model container [2022-07-14 06:36:07,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:36:07" (3/3) ... [2022-07-14 06:36:07,651 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2-2.i [2022-07-14 06:36:07,681 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 06:36:07,681 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2022-07-14 06:36:07,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 06:36:07,751 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@1e30a2b9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2ea0b3c5 [2022-07-14 06:36:07,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-07-14 06:36:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 83 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:07,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 06:36:07,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:07,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:07,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:07,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1790059245, now seen corresponding path program 1 times [2022-07-14 06:36:07,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:07,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201514460] [2022-07-14 06:36:07,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:07,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:07,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:07,788 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 06:36:07,790 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 06:36:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:07,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 06:36:07,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:07,969 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 06:36:08,013 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 06:36:08,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:08,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:08,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201514460] [2022-07-14 06:36:08,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201514460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:08,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:08,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:36:08,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118830329] [2022-07-14 06:36:08,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:08,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:36:08,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:36:08,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:36:08,049 INFO L87 Difference]: Start difference. First operand has 90 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 83 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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 06:36:08,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:08,442 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2022-07-14 06:36:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:36:08,446 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 06:36:08,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:08,456 INFO L225 Difference]: With dead ends: 153 [2022-07-14 06:36:08,456 INFO L226 Difference]: Without dead ends: 151 [2022-07-14 06:36:08,459 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 06:36:08,467 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 94 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:08,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 373 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:36:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-14 06:36:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 93. [2022-07-14 06:36:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 85 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-14 06:36:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2022-07-14 06:36:08,541 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 10 [2022-07-14 06:36:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:08,541 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2022-07-14 06:36:08,542 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 06:36:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2022-07-14 06:36:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 06:36:08,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:08,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:08,559 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 06:36:08,752 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 06:36:08,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:08,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:08,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1761430094, now seen corresponding path program 1 times [2022-07-14 06:36:08,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:08,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630242021] [2022-07-14 06:36:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:08,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:08,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:08,759 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 06:36:08,764 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 06:36:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:08,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 06:36:08,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:08,863 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 06:36:08,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:08,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:08,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630242021] [2022-07-14 06:36:08,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630242021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:08,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:08,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:36:08,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219267839] [2022-07-14 06:36:08,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:08,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 06:36:08,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:08,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 06:36:08,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:36:08,867 INFO L87 Difference]: Start difference. First operand 93 states and 103 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 06:36:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:08,891 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2022-07-14 06:36:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:36:08,891 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 06:36:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:08,892 INFO L225 Difference]: With dead ends: 110 [2022-07-14 06:36:08,893 INFO L226 Difference]: Without dead ends: 110 [2022-07-14 06:36:08,893 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 06:36:08,894 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 17 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 385 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 06:36:08,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 385 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-07-14 06:36:08,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 91. [2022-07-14 06:36:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 83 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-14 06:36:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2022-07-14 06:36:08,901 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 10 [2022-07-14 06:36:08,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:08,901 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2022-07-14 06:36:08,902 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 06:36:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2022-07-14 06:36:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 06:36:08,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:08,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:08,915 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 06:36:09,113 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 06:36:09,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:09,114 INFO L85 PathProgramCache]: Analyzing trace with hash 342738302, now seen corresponding path program 1 times [2022-07-14 06:36:09,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:09,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744746278] [2022-07-14 06:36:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:09,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:09,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:09,121 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 06:36:09,123 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 06:36:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:09,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:36:09,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:09,191 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 06:36:09,267 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 06:36:09,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:09,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:09,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744746278] [2022-07-14 06:36:09,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744746278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:09,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:09,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 06:36:09,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464982452] [2022-07-14 06:36:09,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:09,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:36:09,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:09,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:36:09,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:36:09,270 INFO L87 Difference]: Start difference. First operand 91 states and 100 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 06:36:09,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:09,714 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2022-07-14 06:36:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:36:09,717 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 06:36:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:09,718 INFO L225 Difference]: With dead ends: 128 [2022-07-14 06:36:09,718 INFO L226 Difference]: Without dead ends: 128 [2022-07-14 06:36:09,719 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 06:36:09,719 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 69 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:09,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 465 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 06:36:09,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-07-14 06:36:09,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 90. [2022-07-14 06:36:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 82 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-14 06:36:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2022-07-14 06:36:09,726 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 11 [2022-07-14 06:36:09,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:09,726 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2022-07-14 06:36:09,726 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 06:36:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2022-07-14 06:36:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-14 06:36:09,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:09,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:09,739 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 06:36:09,931 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 06:36:09,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:09,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:09,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2034926041, now seen corresponding path program 1 times [2022-07-14 06:36:09,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:09,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938808451] [2022-07-14 06:36:09,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:09,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:09,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:09,934 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 06:36:09,935 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 06:36:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:09,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:36:09,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:10,015 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 06:36:10,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:10,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:10,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938808451] [2022-07-14 06:36:10,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938808451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:10,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:10,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:36:10,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089070289] [2022-07-14 06:36:10,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:10,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 06:36:10,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:10,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 06:36:10,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:36:10,019 INFO L87 Difference]: Start difference. First operand 90 states and 99 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 06:36:10,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:10,041 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2022-07-14 06:36:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:36:10,042 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 06:36:10,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:10,043 INFO L225 Difference]: With dead ends: 109 [2022-07-14 06:36:10,043 INFO L226 Difference]: Without dead ends: 109 [2022-07-14 06:36:10,043 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 06:36:10,044 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 33 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 409 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 06:36:10,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 409 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-14 06:36:10,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2022-07-14 06:36:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 82 states have internal predecessors, (89), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-14 06:36:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2022-07-14 06:36:10,051 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 12 [2022-07-14 06:36:10,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:10,052 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2022-07-14 06:36:10,052 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 06:36:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2022-07-14 06:36:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-14 06:36:10,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:10,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:10,065 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 06:36:10,261 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 06:36:10,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:10,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash -517230920, now seen corresponding path program 1 times [2022-07-14 06:36:10,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:10,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275329709] [2022-07-14 06:36:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:10,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:10,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:10,267 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 06:36:10,268 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 06:36:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:10,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 06:36:10,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:10,353 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 06:36:10,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:10,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:10,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275329709] [2022-07-14 06:36:10,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275329709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:10,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:10,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:36:10,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903845839] [2022-07-14 06:36:10,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:10,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:36:10,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:10,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:36:10,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:36:10,356 INFO L87 Difference]: Start difference. First operand 90 states and 98 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 06:36:10,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:10,390 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2022-07-14 06:36:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:36:10,391 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 06:36:10,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:10,392 INFO L225 Difference]: With dead ends: 106 [2022-07-14 06:36:10,392 INFO L226 Difference]: Without dead ends: 106 [2022-07-14 06:36:10,392 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 06:36:10,393 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 15 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:10,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 281 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-14 06:36:10,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 92. [2022-07-14 06:36:10,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 84 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-14 06:36:10,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2022-07-14 06:36:10,399 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 12 [2022-07-14 06:36:10,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:10,399 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2022-07-14 06:36:10,399 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 06:36:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2022-07-14 06:36:10,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-14 06:36:10,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:10,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:10,416 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 06:36:10,609 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 06:36:10,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:10,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:10,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1400250303, now seen corresponding path program 1 times [2022-07-14 06:36:10,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:10,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933815206] [2022-07-14 06:36:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:10,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:10,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:10,612 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 06:36:10,613 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 06:36:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:10,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 06:36:10,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:10,710 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 06:36:10,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:10,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:10,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933815206] [2022-07-14 06:36:10,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933815206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:10,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:10,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:36:10,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274123745] [2022-07-14 06:36:10,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:10,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:36:10,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:10,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:36:10,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:36:10,715 INFO L87 Difference]: Start difference. First operand 92 states and 100 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 06:36:10,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:10,740 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2022-07-14 06:36:10,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:36:10,741 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 06:36:10,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:10,742 INFO L225 Difference]: With dead ends: 100 [2022-07-14 06:36:10,742 INFO L226 Difference]: Without dead ends: 100 [2022-07-14 06:36:10,743 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 06:36:10,745 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 31 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:10,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 200 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:10,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-07-14 06:36:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2022-07-14 06:36:10,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 85 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-14 06:36:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2022-07-14 06:36:10,765 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 16 [2022-07-14 06:36:10,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:10,765 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2022-07-14 06:36:10,765 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 06:36:10,766 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2022-07-14 06:36:10,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-14 06:36:10,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:10,767 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 06:36:10,782 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 06:36:10,976 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 06:36:10,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:10,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:10,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1200886583, now seen corresponding path program 1 times [2022-07-14 06:36:10,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:10,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589947034] [2022-07-14 06:36:10,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:10,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:10,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:10,979 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 06:36:10,980 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 06:36:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:11,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 06:36:11,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:11,157 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 06:36:11,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:11,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:11,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589947034] [2022-07-14 06:36:11,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589947034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:11,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:11,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 06:36:11,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775439958] [2022-07-14 06:36:11,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:11,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:36:11,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:11,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:36:11,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:36:11,160 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 06:36:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:11,225 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2022-07-14 06:36:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:36:11,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 17 [2022-07-14 06:36:11,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:11,227 INFO L225 Difference]: With dead ends: 106 [2022-07-14 06:36:11,227 INFO L226 Difference]: Without dead ends: 106 [2022-07-14 06:36:11,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:36:11,228 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 14 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:11,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 448 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:11,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-14 06:36:11,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2022-07-14 06:36:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 91 states have internal predecessors, (97), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-07-14 06:36:11,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2022-07-14 06:36:11,235 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 17 [2022-07-14 06:36:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:11,235 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2022-07-14 06:36:11,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 06:36:11,236 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2022-07-14 06:36:11,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-14 06:36:11,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:11,236 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 06:36:11,249 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 06:36:11,445 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 06:36:11,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:11,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:11,446 INFO L85 PathProgramCache]: Analyzing trace with hash -517345560, now seen corresponding path program 1 times [2022-07-14 06:36:11,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:11,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878619144] [2022-07-14 06:36:11,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:11,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:11,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:11,448 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 06:36:11,449 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 06:36:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:11,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:36:11,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:11,546 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 06:36:11,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:36:11,592 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 06:36:11,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:11,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878619144] [2022-07-14 06:36:11,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878619144] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:36:11,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:36:11,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-14 06:36:11,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82029052] [2022-07-14 06:36:11,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:36:11,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:36:11,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:11,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:36:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:36:11,595 INFO L87 Difference]: Start difference. First operand 101 states and 110 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 06:36:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:11,657 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2022-07-14 06:36:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:36:11,658 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 06:36:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:11,659 INFO L225 Difference]: With dead ends: 107 [2022-07-14 06:36:11,659 INFO L226 Difference]: Without dead ends: 107 [2022-07-14 06:36:11,659 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 06:36:11,660 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 62 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:11,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 465 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-14 06:36:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2022-07-14 06:36:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 94 states have internal predecessors, (100), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-07-14 06:36:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions. [2022-07-14 06:36:11,664 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 17 [2022-07-14 06:36:11,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:11,664 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions. [2022-07-14 06:36:11,665 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 06:36:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions. [2022-07-14 06:36:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-14 06:36:11,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:11,666 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 06:36:11,677 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 06:36:11,875 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 06:36:11,875 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:11,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:11,876 INFO L85 PathProgramCache]: Analyzing trace with hash -613690879, now seen corresponding path program 2 times [2022-07-14 06:36:11,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:11,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258520577] [2022-07-14 06:36:11,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 06:36:11,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:11,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:11,878 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 06:36:11,879 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 06:36:11,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 06:36:11,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:36:11,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 06:36:11,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:11,963 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 06:36:12,032 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 06:36:12,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:12,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:12,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258520577] [2022-07-14 06:36:12,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258520577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:12,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:12,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 06:36:12,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750486085] [2022-07-14 06:36:12,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:12,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:36:12,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:12,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:36:12,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:36:12,034 INFO L87 Difference]: Start difference. First operand 104 states and 113 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 06:36:12,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:12,364 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2022-07-14 06:36:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 06:36:12,364 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 06:36:12,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:12,365 INFO L225 Difference]: With dead ends: 136 [2022-07-14 06:36:12,365 INFO L226 Difference]: Without dead ends: 136 [2022-07-14 06:36:12,365 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 06:36:12,366 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 91 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:12,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 511 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:36:12,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-07-14 06:36:12,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 103. [2022-07-14 06:36:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 93 states have internal predecessors, (99), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-07-14 06:36:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2022-07-14 06:36:12,370 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 20 [2022-07-14 06:36:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:12,371 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2022-07-14 06:36:12,371 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 06:36:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2022-07-14 06:36:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-14 06:36:12,372 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:12,372 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 06:36:12,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:12,579 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 06:36:12,579 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:12,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:12,580 INFO L85 PathProgramCache]: Analyzing trace with hash -613690878, now seen corresponding path program 1 times [2022-07-14 06:36:12,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:12,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343059169] [2022-07-14 06:36:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:12,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:12,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:12,583 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 06:36:12,585 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 06:36:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:12,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 06:36:12,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:12,768 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 06:36:12,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:36:12,904 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 06:36:12,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:12,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343059169] [2022-07-14 06:36:12,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343059169] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:36:12,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:36:12,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-14 06:36:12,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829863956] [2022-07-14 06:36:12,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:36:12,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 06:36:12,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:12,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 06:36:12,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-14 06:36:12,906 INFO L87 Difference]: Start difference. First operand 103 states and 112 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 06:36:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:13,179 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2022-07-14 06:36:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 06:36:13,180 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 06:36:13,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:13,180 INFO L225 Difference]: With dead ends: 112 [2022-07-14 06:36:13,180 INFO L226 Difference]: Without dead ends: 112 [2022-07-14 06:36:13,181 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 06:36:13,181 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 30 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:13,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 918 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 06:36:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-14 06:36:13,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2022-07-14 06:36:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 76 states have (on average 1.381578947368421) internal successors, (105), 99 states have internal predecessors, (105), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-07-14 06:36:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2022-07-14 06:36:13,185 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 20 [2022-07-14 06:36:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:13,185 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2022-07-14 06:36:13,185 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 06:36:13,185 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2022-07-14 06:36:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-14 06:36:13,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:13,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:13,198 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 06:36:13,395 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 06:36:13,395 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:13,396 INFO L85 PathProgramCache]: Analyzing trace with hash -694582635, now seen corresponding path program 1 times [2022-07-14 06:36:13,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:13,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822053398] [2022-07-14 06:36:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:13,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:13,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:13,398 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 06:36:13,401 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 06:36:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:13,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 06:36:13,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 06:36:13,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:13,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:13,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822053398] [2022-07-14 06:36:13,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822053398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:13,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:13,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 06:36:13,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483163776] [2022-07-14 06:36:13,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:13,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:36:13,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:13,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:36:13,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:36:13,502 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 06:36:13,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:13,602 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2022-07-14 06:36:13,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:36:13,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-07-14 06:36:13,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:13,604 INFO L225 Difference]: With dead ends: 115 [2022-07-14 06:36:13,604 INFO L226 Difference]: Without dead ends: 99 [2022-07-14 06:36:13,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 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 06:36:13,604 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 31 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:13,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 182 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 06:36:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-14 06:36:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2022-07-14 06:36:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 88 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:13,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2022-07-14 06:36:13,608 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 25 [2022-07-14 06:36:13,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:13,608 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2022-07-14 06:36:13,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 06:36:13,609 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2022-07-14 06:36:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-14 06:36:13,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:13,609 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 06:36:13,621 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 06:36:13,818 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 06:36:13,818 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:13,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:13,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1800263842, now seen corresponding path program 2 times [2022-07-14 06:36:13,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:13,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100533925] [2022-07-14 06:36:13,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 06:36:13,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:13,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:13,821 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 06:36:13,821 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 06:36:13,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 06:36:13,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:36:13,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-14 06:36:13,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:13,906 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 06:36:14,067 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 06:36:14,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:14,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:14,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100533925] [2022-07-14 06:36:14,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100533925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:14,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:14,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 06:36:14,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533173007] [2022-07-14 06:36:14,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:14,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 06:36:14,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:14,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 06:36:14,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:36:14,069 INFO L87 Difference]: Start difference. First operand 95 states and 102 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 06:36:14,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:14,560 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2022-07-14 06:36:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 06:36:14,561 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 06:36:14,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:14,561 INFO L225 Difference]: With dead ends: 135 [2022-07-14 06:36:14,562 INFO L226 Difference]: Without dead ends: 135 [2022-07-14 06:36:14,562 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 06:36:14,562 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 97 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:14,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 590 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 06:36:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-14 06:36:14,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 94. [2022-07-14 06:36:14,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 87 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:14,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2022-07-14 06:36:14,566 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 26 [2022-07-14 06:36:14,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:14,566 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2022-07-14 06:36:14,566 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 06:36:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2022-07-14 06:36:14,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-14 06:36:14,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:14,567 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 06:36:14,582 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 06:36:14,782 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 06:36:14,782 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:14,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash -819776159, now seen corresponding path program 1 times [2022-07-14 06:36:14,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:14,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523183902] [2022-07-14 06:36:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:14,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:14,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:14,784 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 06:36:14,785 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 06:36:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:14,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:36:14,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:15,071 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 06:36:15,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:36:15,501 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 06:36:15,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:15,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523183902] [2022-07-14 06:36:15,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523183902] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:36:15,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:36:15,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-14 06:36:15,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114307723] [2022-07-14 06:36:15,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:36:15,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-14 06:36:15,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:15,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-14 06:36:15,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2022-07-14 06:36:15,504 INFO L87 Difference]: Start difference. First operand 94 states and 101 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 06:36:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:15,884 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2022-07-14 06:36:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-14 06:36:15,885 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 06:36:15,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:15,886 INFO L225 Difference]: With dead ends: 100 [2022-07-14 06:36:15,886 INFO L226 Difference]: Without dead ends: 100 [2022-07-14 06:36:15,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2022-07-14 06:36:15,887 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 29 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:15,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1126 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:36:15,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-07-14 06:36:15,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-07-14 06:36:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.375) internal successors, (99), 93 states have internal predecessors, (99), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2022-07-14 06:36:15,890 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 28 [2022-07-14 06:36:15,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:15,890 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2022-07-14 06:36:15,891 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 06:36:15,891 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2022-07-14 06:36:15,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-14 06:36:15,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:15,892 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 06:36:15,907 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 06:36:16,101 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 06:36:16,101 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:16,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1570464767, now seen corresponding path program 2 times [2022-07-14 06:36:16,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:16,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875611101] [2022-07-14 06:36:16,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 06:36:16,103 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:16,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:16,107 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 06:36:16,109 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 06:36:16,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 06:36:16,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:36:16,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 06:36:16,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:16,256 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 06:36:16,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:16,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:16,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875611101] [2022-07-14 06:36:16,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875611101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:16,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:16,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 06:36:16,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605541330] [2022-07-14 06:36:16,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:16,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:36:16,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:16,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:36:16,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:36:16,259 INFO L87 Difference]: Start difference. First operand 100 states and 107 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 06:36:16,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:16,289 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2022-07-14 06:36:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:36:16,290 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 06:36:16,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:16,290 INFO L225 Difference]: With dead ends: 100 [2022-07-14 06:36:16,291 INFO L226 Difference]: Without dead ends: 100 [2022-07-14 06:36:16,291 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 06:36:16,291 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 49 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:16,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 365 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:16,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-07-14 06:36:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-07-14 06:36:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 93 states have internal predecessors, (98), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2022-07-14 06:36:16,295 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 34 [2022-07-14 06:36:16,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:16,295 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2022-07-14 06:36:16,295 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 06:36:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2022-07-14 06:36:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-14 06:36:16,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:16,296 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 06:36:16,304 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 06:36:16,503 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 06:36:16,503 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:16,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:16,504 INFO L85 PathProgramCache]: Analyzing trace with hash -234355352, now seen corresponding path program 1 times [2022-07-14 06:36:16,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:16,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22600047] [2022-07-14 06:36:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:16,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:16,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:16,505 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 06:36:16,506 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 06:36:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:16,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 06:36:16,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:16,669 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 06:36:16,758 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 06:36:16,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:16,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:16,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22600047] [2022-07-14 06:36:16,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22600047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:16,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:16,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 06:36:16,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401909972] [2022-07-14 06:36:16,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:16,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 06:36:16,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:16,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 06:36:16,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:36:16,760 INFO L87 Difference]: Start difference. First operand 100 states and 106 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 06:36:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:17,021 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2022-07-14 06:36:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 06:36:17,021 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 06:36:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:17,022 INFO L225 Difference]: With dead ends: 98 [2022-07-14 06:36:17,022 INFO L226 Difference]: Without dead ends: 98 [2022-07-14 06:36:17,022 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 06:36:17,023 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 74 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:17,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 378 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:36:17,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-07-14 06:36:17,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-07-14 06:36:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 91 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:17,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2022-07-14 06:36:17,026 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 36 [2022-07-14 06:36:17,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:17,026 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2022-07-14 06:36:17,026 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 06:36:17,027 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2022-07-14 06:36:17,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-14 06:36:17,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:17,027 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 06:36:17,038 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 06:36:17,238 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 06:36:17,238 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:17,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:17,238 INFO L85 PathProgramCache]: Analyzing trace with hash -234355351, now seen corresponding path program 1 times [2022-07-14 06:36:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:17,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323516362] [2022-07-14 06:36:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:17,239 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:17,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:17,240 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 06:36:17,248 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 06:36:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:17,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-14 06:36:17,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:17,436 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 06:36:17,631 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 06:36:17,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:17,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:17,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323516362] [2022-07-14 06:36:17,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323516362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:17,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:17,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 06:36:17,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989697126] [2022-07-14 06:36:17,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:17,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 06:36:17,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:17,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 06:36:17,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:36:17,633 INFO L87 Difference]: Start difference. First operand 98 states and 104 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 06:36:17,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:17,914 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2022-07-14 06:36:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 06:36:17,914 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 06:36:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:17,915 INFO L225 Difference]: With dead ends: 96 [2022-07-14 06:36:17,915 INFO L226 Difference]: Without dead ends: 96 [2022-07-14 06:36:17,916 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 06:36:17,916 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 78 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:17,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 460 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:36:17,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-07-14 06:36:17,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-07-14 06:36:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 89 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:17,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2022-07-14 06:36:17,919 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 36 [2022-07-14 06:36:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:17,920 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2022-07-14 06:36:17,920 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 06:36:17,920 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2022-07-14 06:36:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-14 06:36:17,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:17,921 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 06:36:17,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:18,131 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 06:36:18,132 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:18,133 INFO L85 PathProgramCache]: Analyzing trace with hash -285061459, now seen corresponding path program 1 times [2022-07-14 06:36:18,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:18,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899712957] [2022-07-14 06:36:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:18,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:18,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:18,135 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 06:36:18,135 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 06:36:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:18,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 06:36:18,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:18,348 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 06:36:18,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:18,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:18,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899712957] [2022-07-14 06:36:18,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899712957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:18,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:18,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 06:36:18,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658917286] [2022-07-14 06:36:18,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:18,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:36:18,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:18,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:36:18,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:36:18,350 INFO L87 Difference]: Start difference. First operand 96 states and 102 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 06:36:18,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:18,398 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2022-07-14 06:36:18,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:36:18,398 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 06:36:18,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:18,399 INFO L225 Difference]: With dead ends: 96 [2022-07-14 06:36:18,399 INFO L226 Difference]: Without dead ends: 96 [2022-07-14 06:36:18,399 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 06:36:18,400 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 69 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:18,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 390 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-07-14 06:36:18,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-07-14 06:36:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 88 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2022-07-14 06:36:18,402 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 36 [2022-07-14 06:36:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:18,402 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2022-07-14 06:36:18,402 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 06:36:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2022-07-14 06:36:18,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-14 06:36:18,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:18,403 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 06:36:18,415 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 06:36:18,612 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 06:36:18,612 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:18,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:18,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1910239882, now seen corresponding path program 1 times [2022-07-14 06:36:18,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:18,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644238107] [2022-07-14 06:36:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:18,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:18,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:18,614 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 06:36:18,615 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 06:36:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:18,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 06:36:18,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:18,792 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 06:36:18,905 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 06:36:18,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:18,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:18,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644238107] [2022-07-14 06:36:18,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644238107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:18,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:18,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 06:36:18,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217442946] [2022-07-14 06:36:18,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:18,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 06:36:18,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:18,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 06:36:18,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:36:18,907 INFO L87 Difference]: Start difference. First operand 96 states and 101 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 06:36:19,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:19,139 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2022-07-14 06:36:19,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 06:36:19,139 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 06:36:19,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:19,140 INFO L225 Difference]: With dead ends: 97 [2022-07-14 06:36:19,140 INFO L226 Difference]: Without dead ends: 97 [2022-07-14 06:36:19,140 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 06:36:19,141 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 61 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:19,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 366 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2022-07-14 06:36:19,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-07-14 06:36:19,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2022-07-14 06:36:19,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 86 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2022-07-14 06:36:19,144 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 44 [2022-07-14 06:36:19,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:19,144 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2022-07-14 06:36:19,144 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 06:36:19,144 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2022-07-14 06:36:19,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-14 06:36:19,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:19,145 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 06:36:19,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:19,356 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 06:36:19,356 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:19,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:19,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1910239883, now seen corresponding path program 1 times [2022-07-14 06:36:19,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:19,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510146467] [2022-07-14 06:36:19,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:19,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:19,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:19,358 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 06:36:19,360 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 06:36:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:19,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-14 06:36:19,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:19,545 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 06:36:19,762 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 06:36:19,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:19,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:19,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510146467] [2022-07-14 06:36:19,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510146467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:19,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:19,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 06:36:19,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305108563] [2022-07-14 06:36:19,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:19,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 06:36:19,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:19,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 06:36:19,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:36:19,764 INFO L87 Difference]: Start difference. First operand 94 states and 99 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 06:36:20,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:20,037 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2022-07-14 06:36:20,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 06:36:20,038 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 06:36:20,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:20,038 INFO L225 Difference]: With dead ends: 99 [2022-07-14 06:36:20,038 INFO L226 Difference]: Without dead ends: 99 [2022-07-14 06:36:20,039 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 06:36:20,039 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 64 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:20,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 349 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 130 Invalid, 0 Unknown, 17 Unchecked, 0.2s Time] [2022-07-14 06:36:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-14 06:36:20,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2022-07-14 06:36:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 84 states have internal predecessors, (89), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2022-07-14 06:36:20,042 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 44 [2022-07-14 06:36:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:20,042 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2022-07-14 06:36:20,043 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 06:36:20,043 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2022-07-14 06:36:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-14 06:36:20,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:20,043 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] [2022-07-14 06:36:20,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-07-14 06:36:20,251 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 06:36:20,252 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:20,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1609523877, now seen corresponding path program 1 times [2022-07-14 06:36:20,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:20,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723698562] [2022-07-14 06:36:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:20,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:20,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:20,254 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 06:36:20,255 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 06:36:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:20,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 06:36:20,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:20,519 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 06:36:20,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:20,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:20,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723698562] [2022-07-14 06:36:20,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723698562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:20,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:20,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 06:36:20,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495234114] [2022-07-14 06:36:20,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:20,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:36:20,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:20,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:36:20,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:36:20,521 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:20,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:20,579 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2022-07-14 06:36:20,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:36:20,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2022-07-14 06:36:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:20,580 INFO L225 Difference]: With dead ends: 92 [2022-07-14 06:36:20,580 INFO L226 Difference]: Without dead ends: 92 [2022-07-14 06:36:20,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 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 06:36:20,582 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 36 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:20,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 388 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:36:20,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-07-14 06:36:20,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-07-14 06:36:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.2222222222222223) internal successors, (88), 84 states have internal predecessors, (88), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2022-07-14 06:36:20,589 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 49 [2022-07-14 06:36:20,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:20,589 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2022-07-14 06:36:20,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:20,589 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2022-07-14 06:36:20,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-14 06:36:20,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:20,590 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] [2022-07-14 06:36:20,601 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 06:36:20,801 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 06:36:20,802 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:20,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:20,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1068375809, now seen corresponding path program 1 times [2022-07-14 06:36:20,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:20,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324055655] [2022-07-14 06:36:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:20,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:20,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:20,804 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 06:36:20,804 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 06:36:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:21,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 06:36:21,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:21,029 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 06:36:21,167 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 06:36:21,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:21,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:21,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324055655] [2022-07-14 06:36:21,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324055655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:21,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:21,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-14 06:36:21,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301126249] [2022-07-14 06:36:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:21,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 06:36:21,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:21,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 06:36:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-14 06:36:21,169 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:21,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:21,473 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2022-07-14 06:36:21,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 06:36:21,473 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2022-07-14 06:36:21,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:21,474 INFO L225 Difference]: With dead ends: 122 [2022-07-14 06:36:21,474 INFO L226 Difference]: Without dead ends: 122 [2022-07-14 06:36:21,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-14 06:36:21,475 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 174 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:21,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 312 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 194 Invalid, 0 Unknown, 19 Unchecked, 0.3s Time] [2022-07-14 06:36:21,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-07-14 06:36:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2022-07-14 06:36:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 86 states have (on average 1.2209302325581395) internal successors, (105), 98 states have internal predecessors, (105), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-14 06:36:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2022-07-14 06:36:21,479 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 55 [2022-07-14 06:36:21,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:21,479 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2022-07-14 06:36:21,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:21,480 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2022-07-14 06:36:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-14 06:36:21,480 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:21,480 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] [2022-07-14 06:36:21,495 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 06:36:21,680 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 06:36:21,681 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1068375808, now seen corresponding path program 1 times [2022-07-14 06:36:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:21,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262105634] [2022-07-14 06:36:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:21,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:21,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:21,683 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 06:36:21,683 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 06:36:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:21,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-14 06:36:21,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:21,950 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 06:36:22,231 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 06:36:22,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:22,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:22,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262105634] [2022-07-14 06:36:22,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262105634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:22,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:22,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-14 06:36:22,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542578436] [2022-07-14 06:36:22,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:22,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 06:36:22,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:22,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 06:36:22,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-14 06:36:22,232 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:22,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:22,594 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2022-07-14 06:36:22,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 06:36:22,595 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2022-07-14 06:36:22,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:22,596 INFO L225 Difference]: With dead ends: 109 [2022-07-14 06:36:22,596 INFO L226 Difference]: Without dead ends: 109 [2022-07-14 06:36:22,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-07-14 06:36:22,596 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 152 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:22,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 377 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 205 Invalid, 0 Unknown, 8 Unchecked, 0.3s Time] [2022-07-14 06:36:22,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-14 06:36:22,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2022-07-14 06:36:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 96 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-14 06:36:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2022-07-14 06:36:22,600 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 55 [2022-07-14 06:36:22,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:22,600 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2022-07-14 06:36:22,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2022-07-14 06:36:22,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-14 06:36:22,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:22,601 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:22,617 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 06:36:22,811 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 06:36:22,812 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:22,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:22,812 INFO L85 PathProgramCache]: Analyzing trace with hash 7191578, now seen corresponding path program 1 times [2022-07-14 06:36:22,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:22,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693135679] [2022-07-14 06:36:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:22,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:22,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:22,814 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 06:36:22,816 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 06:36:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:23,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 06:36:23,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:23,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:23,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693135679] [2022-07-14 06:36:23,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693135679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:23,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:23,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 06:36:23,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473449307] [2022-07-14 06:36:23,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:23,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 06:36:23,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:23,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 06:36:23,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:36:23,136 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-14 06:36:23,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:23,228 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2022-07-14 06:36:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 06:36:23,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2022-07-14 06:36:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:23,230 INFO L225 Difference]: With dead ends: 109 [2022-07-14 06:36:23,230 INFO L226 Difference]: Without dead ends: 105 [2022-07-14 06:36:23,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 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 06:36:23,231 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 62 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:23,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 445 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 06:36:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-14 06:36:23,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-07-14 06:36:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 96 states have internal predecessors, (99), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-14 06:36:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2022-07-14 06:36:23,234 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 60 [2022-07-14 06:36:23,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:23,235 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2022-07-14 06:36:23,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-14 06:36:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2022-07-14 06:36:23,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-14 06:36:23,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:23,237 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] [2022-07-14 06:36:23,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:23,449 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 06:36:23,449 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:23,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash 392980163, now seen corresponding path program 1 times [2022-07-14 06:36:23,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:23,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885574429] [2022-07-14 06:36:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:23,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:23,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:23,451 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 06:36:23,452 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 06:36:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:23,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-14 06:36:23,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:23,808 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 06:36:23,959 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 06:36:23,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:23,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:23,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885574429] [2022-07-14 06:36:23,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885574429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:23,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:23,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-14 06:36:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274990232] [2022-07-14 06:36:23,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:23,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 06:36:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 06:36:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-14 06:36:23,961 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:24,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:24,251 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2022-07-14 06:36:24,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 06:36:24,252 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2022-07-14 06:36:24,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:24,253 INFO L225 Difference]: With dead ends: 112 [2022-07-14 06:36:24,253 INFO L226 Difference]: Without dead ends: 112 [2022-07-14 06:36:24,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-07-14 06:36:24,254 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 110 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:24,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 326 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 19 Unchecked, 0.2s Time] [2022-07-14 06:36:24,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-14 06:36:24,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2022-07-14 06:36:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 96 states have internal predecessors, (100), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-14 06:36:24,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2022-07-14 06:36:24,257 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 61 [2022-07-14 06:36:24,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:24,258 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2022-07-14 06:36:24,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:24,258 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2022-07-14 06:36:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-14 06:36:24,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:24,259 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] [2022-07-14 06:36:24,271 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 06:36:24,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:24,472 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:24,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:24,472 INFO L85 PathProgramCache]: Analyzing trace with hash 392980164, now seen corresponding path program 1 times [2022-07-14 06:36:24,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:24,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307031462] [2022-07-14 06:36:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:24,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:24,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:24,474 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:24,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-14 06:36:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:24,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-14 06:36:24,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:24,753 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 06:36:25,073 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 06:36:25,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:25,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:25,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307031462] [2022-07-14 06:36:25,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307031462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:25,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:25,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-14 06:36:25,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173075154] [2022-07-14 06:36:25,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:25,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 06:36:25,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:25,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 06:36:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-14 06:36:25,075 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:25,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:25,468 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2022-07-14 06:36:25,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 06:36:25,469 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2022-07-14 06:36:25,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:25,470 INFO L225 Difference]: With dead ends: 103 [2022-07-14 06:36:25,470 INFO L226 Difference]: Without dead ends: 103 [2022-07-14 06:36:25,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-07-14 06:36:25,471 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 146 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:25,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 377 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 259 Invalid, 0 Unknown, 8 Unchecked, 0.3s Time] [2022-07-14 06:36:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-07-14 06:36:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-07-14 06:36:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 94 states have internal predecessors, (97), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-14 06:36:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2022-07-14 06:36:25,474 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 61 [2022-07-14 06:36:25,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:25,474 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2022-07-14 06:36:25,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2022-07-14 06:36:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-14 06:36:25,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:25,475 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:25,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:25,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:25,680 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:25,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash -808735445, now seen corresponding path program 1 times [2022-07-14 06:36:25,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:25,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296257117] [2022-07-14 06:36:25,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:25,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:25,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:25,682 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 06:36:25,684 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 06:36:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:25,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-14 06:36:25,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:26,378 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 06:36:26,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:26,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:26,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296257117] [2022-07-14 06:36:26,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296257117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:26,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:26,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-14 06:36:26,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174591028] [2022-07-14 06:36:26,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:26,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 06:36:26,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:26,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 06:36:26,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-07-14 06:36:26,380 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:26,679 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2022-07-14 06:36:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 06:36:26,680 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2022-07-14 06:36:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:26,681 INFO L225 Difference]: With dead ends: 102 [2022-07-14 06:36:26,681 INFO L226 Difference]: Without dead ends: 102 [2022-07-14 06:36:26,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-14 06:36:26,682 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 157 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:26,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 383 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 185 Invalid, 0 Unknown, 7 Unchecked, 0.2s Time] [2022-07-14 06:36:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-14 06:36:26,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-07-14 06:36:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 87 states have (on average 1.103448275862069) internal successors, (96), 93 states have internal predecessors, (96), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-14 06:36:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2022-07-14 06:36:26,685 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 64 [2022-07-14 06:36:26,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:26,686 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2022-07-14 06:36:26,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2022-07-14 06:36:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-14 06:36:26,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:26,687 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:26,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-14 06:36:26,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:26,900 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:26,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1477848750, now seen corresponding path program 1 times [2022-07-14 06:36:26,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:26,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311789633] [2022-07-14 06:36:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:26,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:26,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:26,902 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:26,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-14 06:36:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:27,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-14 06:36:27,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:27,208 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 06:36:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:27,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:36:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:27,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:27,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311789633] [2022-07-14 06:36:27,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311789633] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:36:27,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:36:27,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2022-07-14 06:36:27,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247546094] [2022-07-14 06:36:27,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:36:27,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 06:36:27,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 06:36:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-14 06:36:27,559 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 06:36:27,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:27,846 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2022-07-14 06:36:27,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-14 06:36:27,847 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 68 [2022-07-14 06:36:27,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:27,848 INFO L225 Difference]: With dead ends: 128 [2022-07-14 06:36:27,848 INFO L226 Difference]: Without dead ends: 128 [2022-07-14 06:36:27,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-14 06:36:27,849 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 152 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:27,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 385 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 234 Invalid, 0 Unknown, 52 Unchecked, 0.2s Time] [2022-07-14 06:36:27,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-07-14 06:36:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 115. [2022-07-14 06:36:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 98 states have (on average 1.1020408163265305) internal successors, (108), 104 states have internal predecessors, (108), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-14 06:36:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 121 transitions. [2022-07-14 06:36:27,852 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 121 transitions. Word has length 68 [2022-07-14 06:36:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:27,852 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 121 transitions. [2022-07-14 06:36:27,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 06:36:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 121 transitions. [2022-07-14 06:36:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-14 06:36:27,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:27,853 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, 1, 1, 1, 1] [2022-07-14 06:36:27,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-07-14 06:36:28,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:28,063 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:28,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1729031655, now seen corresponding path program 1 times [2022-07-14 06:36:28,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:28,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759557742] [2022-07-14 06:36:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:28,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:28,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:28,066 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 06:36:28,067 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 06:36:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:28,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 78 conjunts are in the unsatisfiable core [2022-07-14 06:36:28,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:28,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:28,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:28,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:28,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:28,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:28,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:28,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-07-14 06:36:33,291 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2206 (_ BitVec 8)) (v_ArrVal_2208 (_ BitVec 8))) (= (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_2206) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2208)) |c_#memory_int|)) is different from true [2022-07-14 06:36:33,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:33,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:33,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:33,312 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 29 treesize of output 32 [2022-07-14 06:36:33,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:33,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:33,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:33,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:33,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:33,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:33,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:36:33,586 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:36:33,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 69 [2022-07-14 06:36:33,788 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:36:33,788 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 43 treesize of output 23 [2022-07-14 06:36:34,005 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 06:36:34,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:36:34,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:34,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759557742] [2022-07-14 06:36:34,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759557742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:36:34,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:36:34,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-14 06:36:34,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256186516] [2022-07-14 06:36:34,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:36:34,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-14 06:36:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:34,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-14 06:36:34,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=591, Unknown=2, NotChecked=48, Total=702 [2022-07-14 06:36:34,007 INFO L87 Difference]: Start difference. First operand 115 states and 121 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:34,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:34,866 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2022-07-14 06:36:34,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-14 06:36:34,868 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2022-07-14 06:36:34,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:34,869 INFO L225 Difference]: With dead ends: 100 [2022-07-14 06:36:34,869 INFO L226 Difference]: Without dead ends: 100 [2022-07-14 06:36:34,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=134, Invalid=1128, Unknown=2, NotChecked=68, Total=1332 [2022-07-14 06:36:34,870 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 35 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 324 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:34,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 934 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 253 Invalid, 0 Unknown, 324 Unchecked, 0.4s Time] [2022-07-14 06:36:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-07-14 06:36:34,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2022-07-14 06:36:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 83 states have (on average 1.0843373493975903) internal successors, (90), 87 states have internal predecessors, (90), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2022-07-14 06:36:34,873 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 67 [2022-07-14 06:36:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:34,873 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2022-07-14 06:36:34,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:36:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2022-07-14 06:36:34,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-14 06:36:34,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:34,875 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:36:34,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-07-14 06:36:35,089 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 06:36:35,090 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:35,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:35,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1342862122, now seen corresponding path program 1 times [2022-07-14 06:36:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:35,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910624080] [2022-07-14 06:36:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:35,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:35,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:35,092 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:35,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-14 06:36:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:35,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-14 06:36:35,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:35,509 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 06:36:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:35,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:36:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-14 06:36:35,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:36:35,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910624080] [2022-07-14 06:36:35,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910624080] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:36:35,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:36:35,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2022-07-14 06:36:35,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565135379] [2022-07-14 06:36:35,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:36:35,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 06:36:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:36:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 06:36:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-14 06:36:35,858 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 06:36:36,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:36:36,179 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2022-07-14 06:36:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 06:36:36,179 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 74 [2022-07-14 06:36:36,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:36:36,180 INFO L225 Difference]: With dead ends: 102 [2022-07-14 06:36:36,180 INFO L226 Difference]: Without dead ends: 102 [2022-07-14 06:36:36,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-07-14 06:36:36,181 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 68 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:36:36,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 414 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 241 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2022-07-14 06:36:36,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-14 06:36:36,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2022-07-14 06:36:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 83 states have (on average 1.072289156626506) internal successors, (89), 86 states have internal predecessors, (89), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:36:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2022-07-14 06:36:36,184 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 74 [2022-07-14 06:36:36,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:36:36,184 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2022-07-14 06:36:36,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 06:36:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2022-07-14 06:36:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-14 06:36:36,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:36:36,185 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:36:36,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-07-14 06:36:36,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:36:36,399 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:36:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:36:36,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1943196067, now seen corresponding path program 1 times [2022-07-14 06:36:36,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:36:36,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572605824] [2022-07-14 06:36:36,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:36:36,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:36:36,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:36:36,401 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:36:36,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-14 06:36:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:36:36,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 114 conjunts are in the unsatisfiable core [2022-07-14 06:36:36,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:36:36,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:36,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:36,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:36,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:36,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:36,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:36,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:36,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:36,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:36,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:36:36,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:36:36,981 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 06:36:40,915 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2561 (_ BitVec 8)) (v_ArrVal_2564 (_ 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_2561) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2564)))) is different from true [2022-07-14 06:36:40,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:40,937 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:36:40,938 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 06:36:41,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:36:41,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:36:41,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:36:41,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:36:41,341 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:36:41,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 193 treesize of output 165 [2022-07-14 06:36:41,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:36:41,944 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:36:41,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 249 treesize of output 137 [2022-07-14 06:36:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-14 06:36:46,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:37:10,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:37:10,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572605824] [2022-07-14 06:37:10,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572605824] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:37:10,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2014349771] [2022-07-14 06:37:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:37:10,297 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:37:10,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:37:10,302 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:37:10,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-07-14 06:37:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:37:11,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 131 conjunts are in the unsatisfiable core [2022-07-14 06:37:11,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:37:13,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:13,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:13,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:13,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:13,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:13,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:13,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:13,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:13,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:13,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:37:13,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:37:13,434 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 06:37:16,217 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2765 (_ BitVec 8)) (v_ArrVal_2561 (_ BitVec 8))) (= (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_2561) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2765)) |c_#memory_int|)) is different from true [2022-07-14 06:37:16,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,241 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:37:16,241 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 06:37:16,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:37:16,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:37:16,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:37:16,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:37:16,358 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:37:16,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 193 treesize of output 165 [2022-07-14 06:37:16,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:37:16,602 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:37:16,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 249 treesize of output 137 [2022-07-14 06:37:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-14 06:37:16,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:37:18,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2014349771] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:37:18,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:37:18,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 43] total 44 [2022-07-14 06:37:18,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142633301] [2022-07-14 06:37:18,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:37:18,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-14 06:37:18,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:37:18,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-14 06:37:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=3825, Unknown=13, NotChecked=250, Total=4290 [2022-07-14 06:37:18,567 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand has 44 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 41 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-14 06:37:22,369 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2561 (_ BitVec 8)) (v_ArrVal_2564 (_ 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_2561) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2564)))) (exists ((v_ArrVal_2765 (_ BitVec 8)) (v_ArrVal_2561 (_ BitVec 8))) (= (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_2561) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2765)) |c_#memory_int|))) is different from true [2022-07-14 06:38:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:38:04,145 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2022-07-14 06:38:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-14 06:38:04,146 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 41 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 79 [2022-07-14 06:38:04,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:38:04,147 INFO L225 Difference]: With dead ends: 99 [2022-07-14 06:38:04,147 INFO L226 Difference]: Without dead ends: 95 [2022-07-14 06:38:04,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 171 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 79.9s TimeCoverageRelationStatistics Valid=523, Invalid=7297, Unknown=24, NotChecked=528, Total=8372 [2022-07-14 06:38:04,149 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 121 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 240 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:38:04,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 898 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1282 Invalid, 0 Unknown, 240 Unchecked, 2.3s Time] [2022-07-14 06:38:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-14 06:38:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-07-14 06:38:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 86 states have internal predecessors, (88), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:38:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2022-07-14 06:38:04,152 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 79 [2022-07-14 06:38:04,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:38:04,152 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2022-07-14 06:38:04,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 41 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-14 06:38:04,153 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2022-07-14 06:38:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-14 06:38:04,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:38:04,153 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:38:04,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-07-14 06:38:04,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2022-07-14 06:38:04,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 06:38:04,570 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:38:04,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:38:04,571 INFO L85 PathProgramCache]: Analyzing trace with hash -826672710, now seen corresponding path program 1 times [2022-07-14 06:38:04,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:38:04,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016709897] [2022-07-14 06:38:04,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:38:04,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:38:04,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:38:04,572 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:38:04,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-07-14 06:38:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:38:05,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 156 conjunts are in the unsatisfiable core [2022-07-14 06:38:05,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:38:05,133 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 06:38:05,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,161 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 06:38:05,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,189 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 06:38:05,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,219 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 06:38:05,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,250 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 06:38:05,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,283 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 06:38:05,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,318 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 06:38:05,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,362 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 06:38:05,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,396 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 06:38:05,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,455 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 06:38:05,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,501 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 06:38:05,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,558 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 06:38:05,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,613 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 06:38:05,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,663 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 06:38:05,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,711 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 06:38:05,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:05,755 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 06:38:06,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:06,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:06,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:06,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:06,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:06,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:06,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:06,012 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 06:38:11,525 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3001 (_ BitVec 32)) (v_ArrVal_2999 (_ BitVec 32))) (= |c_#memory_$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_2999) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3001)))) is different from true [2022-07-14 06:38:11,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,537 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 06:38:11,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:11,691 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 06:38:13,871 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3010 (_ BitVec 32)) (v_ArrVal_3009 (_ BitVec 32)) (v_ArrVal_3007 (_ BitVec 32)) (v_ArrVal_3008 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3007) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3009) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3008) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3010)) |c_#memory_$Pointer$.offset|)) is different from true [2022-07-14 06:38:13,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:13,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:13,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:13,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:13,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:13,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:13,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:13,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:13,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:13,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:13,929 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 06:38:14,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:14,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:14,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:14,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:14,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:14,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:14,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:14,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:14,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:14,111 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 06:38:14,221 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 06:38:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-07-14 06:38:14,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:38:16,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:38:16,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016709897] [2022-07-14 06:38:16,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016709897] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:38:16,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1464978841] [2022-07-14 06:38:16,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:38:16,473 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:38:16,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:38:16,474 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:38:16,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-07-14 06:38:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:38:17,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 152 conjunts are in the unsatisfiable core [2022-07-14 06:38:17,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:38:17,245 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 06:38:17,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,257 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 06:38:17,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,270 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 06:38:17,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,283 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 06:38:17,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,307 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 06:38:17,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,333 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 06:38:17,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,367 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 06:38:17,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,404 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 06:38:17,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,422 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 06:38:17,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,461 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 06:38:17,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,493 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 06:38:17,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,511 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 06:38:17,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,525 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 06:38:17,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,562 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 06:38:17,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,602 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 06:38:17,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,635 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 06:38:17,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:17,692 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 06:38:20,796 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2999 (_ BitVec 32)) (v_ArrVal_3248 (_ BitVec 32))) (= |c_#memory_$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_2999) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3248)))) is different from true [2022-07-14 06:38:20,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,806 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 06:38:20,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:20,863 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 06:38:22,925 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3256 (_ BitVec 32)) (v_ArrVal_3257 (_ BitVec 32)) (v_ArrVal_3258 (_ BitVec 32)) (v_ArrVal_3259 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3256) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3257) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3259) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3258)))) is different from true [2022-07-14 06:38:22,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:22,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:22,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:22,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:22,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:22,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:22,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:22,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:22,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:22,969 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 06:38:23,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 06:38:23,168 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:38:23,168 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 06:38:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-07-14 06:38:23,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:38:24,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1464978841] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:38:24,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:38:24,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 44] total 50 [2022-07-14 06:38:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101735925] [2022-07-14 06:38:24,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:38:24,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-14 06:38:24,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:38:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-14 06:38:24,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=3927, Unknown=5, NotChecked=516, Total=4692 [2022-07-14 06:38:24,568 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 51 states, 50 states have (on average 1.84) internal successors, (92), 48 states have internal predecessors, (92), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 06:38:29,328 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2999 (_ BitVec 32)) (v_ArrVal_3248 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2999) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3248)))) (exists ((v_ArrVal_3001 (_ BitVec 32)) (v_ArrVal_2999 (_ BitVec 32))) (= |c_#memory_$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_2999) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3001))))) is different from true [2022-07-14 06:38:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:38:36,669 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2022-07-14 06:38:36,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-14 06:38:36,670 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.84) internal successors, (92), 48 states have internal predecessors, (92), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 80 [2022-07-14 06:38:36,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:38:36,670 INFO L225 Difference]: With dead ends: 94 [2022-07-14 06:38:36,670 INFO L226 Difference]: Without dead ends: 94 [2022-07-14 06:38:36,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 139 SyntacticMatches, 11 SemanticMatches, 97 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=520, Invalid=8235, Unknown=7, NotChecked=940, Total=9702 [2022-07-14 06:38:36,673 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 163 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 398 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:38:36,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 838 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1606 Invalid, 0 Unknown, 398 Unchecked, 2.3s Time] [2022-07-14 06:38:36,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-14 06:38:36,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-07-14 06:38:36,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 85 states have internal predecessors, (87), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:38:36,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2022-07-14 06:38:36,676 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 80 [2022-07-14 06:38:36,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:38:36,676 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2022-07-14 06:38:36,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.84) internal successors, (92), 48 states have internal predecessors, (92), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 06:38:36,676 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2022-07-14 06:38:36,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-14 06:38:36,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:38:36,677 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:38:36,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-07-14 06:38:36,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-07-14 06:38:37,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:38:37,086 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_kobject_putErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:38:37,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:38:37,087 INFO L85 PathProgramCache]: Analyzing trace with hash 142949917, now seen corresponding path program 1 times [2022-07-14 06:38:37,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:38:37,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784772012] [2022-07-14 06:38:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:38:37,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:38:37,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:38:37,089 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:38:37,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-07-14 06:38:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:38:37,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 156 conjunts are in the unsatisfiable core [2022-07-14 06:38:37,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:38:37,723 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 06:38:37,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:37,765 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 06:38:37,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:37,795 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 06:38:37,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:37,838 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 06:38:37,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:37,887 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 06:38:37,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:37,937 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 06:38:37,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:37,980 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 06:38:38,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,034 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 06:38:38,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,080 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 06:38:38,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,130 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 06:38:38,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,169 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 06:38:38,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,220 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 06:38:38,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,262 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 06:38:38,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,310 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 06:38:38,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,354 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 06:38:38,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,402 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 06:38:38,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:38,571 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 06:38:44,091 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3486 (_ BitVec 32)) (v_ArrVal_3489 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3486) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3489)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-14 06:38:44,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,106 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 06:38:44,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:44,281 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 06:38:46,536 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3498 (_ BitVec 32)) (v_ArrVal_3499 (_ BitVec 32)) (v_ArrVal_3496 (_ BitVec 32)) (v_ArrVal_3497 (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3498) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3499) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3496) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3497)))) is different from true [2022-07-14 06:38:46,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,580 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 06:38:46,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:46,771 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 06:38:46,867 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 06:38:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-07-14 06:38:46,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:38:49,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:38:49,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784772012] [2022-07-14 06:38:49,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784772012] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:38:49,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [942432806] [2022-07-14 06:38:49,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:38:49,380 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:38:49,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:38:49,381 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:38:49,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-07-14 06:38:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:38:50,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 152 conjunts are in the unsatisfiable core [2022-07-14 06:38:50,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:38:50,190 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 06:38:50,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,221 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 06:38:50,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,237 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 06:38:50,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,263 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 06:38:50,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,293 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 06:38:50,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,327 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 06:38:50,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,366 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 06:38:50,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,385 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 06:38:50,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,417 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 06:38:50,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,433 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 06:38:50,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,447 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 06:38:50,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,484 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 06:38:50,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,527 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 06:38:50,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,566 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 06:38:50,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,578 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 06:38:50,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,596 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 06:38:50,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:50,657 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 06:38:53,756 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3486 (_ BitVec 32)) (v_ArrVal_3736 (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$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_3486) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3736)))) is different from true [2022-07-14 06:38:53,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 06:38:53,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:53,817 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 06:38:55,881 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3746 (_ BitVec 32)) (v_ArrVal_3744 (_ BitVec 32)) (v_ArrVal_3745 (_ BitVec 32)) (v_ArrVal_3743 (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3746) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3744) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3745) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3743)))) is different from true [2022-07-14 06:38:55,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:55,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:55,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:55,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:55,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:55,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:55,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:55,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:55,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:55,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:38:55,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 06:38:56,024 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 06:38:56,148 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:38:56,148 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 06:38:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-07-14 06:38:56,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:38:57,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [942432806] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:38:57,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:38:57,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 46] total 52 [2022-07-14 06:38:57,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855126457] [2022-07-14 06:38:57,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:38:57,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-14 06:38:57,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:38:57,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-14 06:38:57,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=4040, Unknown=5, NotChecked=524, Total=4830 [2022-07-14 06:38:57,615 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 52 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 49 states have internal predecessors, (93), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 06:39:01,547 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3486 (_ BitVec 32)) (v_ArrVal_3489 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3486) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3489)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3486 (_ BitVec 32)) (v_ArrVal_3736 (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$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_3486) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3736))))) is different from true [2022-07-14 06:39:08,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:39:08,817 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2022-07-14 06:39:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-14 06:39:08,818 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 49 states have internal predecessors, (93), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 81 [2022-07-14 06:39:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:39:08,818 INFO L225 Difference]: With dead ends: 90 [2022-07-14 06:39:08,818 INFO L226 Difference]: Without dead ends: 89 [2022-07-14 06:39:08,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 142 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=441, Invalid=6052, Unknown=7, NotChecked=810, Total=7310 [2022-07-14 06:39:08,820 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 141 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 367 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:39:08,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 603 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1422 Invalid, 0 Unknown, 367 Unchecked, 2.2s Time] [2022-07-14 06:39:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-14 06:39:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-07-14 06:39:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 06:39:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2022-07-14 06:39:08,823 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 81 [2022-07-14 06:39:08,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:39:08,823 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2022-07-14 06:39:08,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 49 states have internal predecessors, (93), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 06:39:08,823 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2022-07-14 06:39:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-14 06:39:08,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:39:08,824 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:08,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2022-07-14 06:39:09,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-07-14 06:39:09,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:39:09,234 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-14 06:39:09,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:39:09,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2138038455, now seen corresponding path program 1 times [2022-07-14 06:39:09,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:39:09,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031373593] [2022-07-14 06:39:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:39:09,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:39:09,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:39:09,236 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:39:09,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-07-14 06:39:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:39:09,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-14 06:39:09,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:39:10,002 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 06:39:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-14 06:39:10,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:39:14,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:39:14,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031373593] [2022-07-14 06:39:14,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031373593] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:39:14,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [289001130] [2022-07-14 06:39:14,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:39:14,836 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:39:14,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:39:14,837 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:39:14,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-07-14 06:39:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:39:15,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-14 06:39:15,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:39:16,041 INFO L356 Elim1Store]: treesize reduction 16, result has 42.9 percent of original size [2022-07-14 06:39:16,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 25 [2022-07-14 06:39:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-14 06:39:16,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:39:20,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [289001130] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:39:20,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:39:20,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2022-07-14 06:39:20,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732759266] [2022-07-14 06:39:20,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:39:20,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 06:39:20,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:39:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 06:39:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=721, Unknown=2, NotChecked=0, Total=812 [2022-07-14 06:39:20,720 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 20 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-14 06:39:20,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:39:20,861 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2022-07-14 06:39:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 06:39:20,861 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 88 [2022-07-14 06:39:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:39:20,862 INFO L225 Difference]: With dead ends: 88 [2022-07-14 06:39:20,862 INFO L226 Difference]: Without dead ends: 0 [2022-07-14 06:39:20,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 306 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=108, Invalid=820, Unknown=2, NotChecked=0, Total=930 [2022-07-14 06:39:20,862 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 30 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:39:20,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 490 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 179 Unchecked, 0.1s Time] [2022-07-14 06:39:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-14 06:39:20,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-14 06:39:20,863 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 06:39:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-14 06:39:20,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2022-07-14 06:39:20,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:39:20,863 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 06:39:20,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-14 06:39:20,864 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-14 06:39:20,864 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-14 06:39:20,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (24 of 25 remaining) [2022-07-14 06:39:20,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2022-07-14 06:39:20,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2022-07-14 06:39:20,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2022-07-14 06:39:20,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (16 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 25 remaining) [2022-07-14 06:39:20,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 25 remaining) [2022-07-14 06:39:20,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 25 remaining) [2022-07-14 06:39:20,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr6ASSERT_VIOLATIONMEMORY_FREE (5 of 25 remaining) [2022-07-14 06:39:20,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE (4 of 25 remaining) [2022-07-14 06:39:20,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr8ASSERT_VIOLATIONMEMORY_FREE (3 of 25 remaining) [2022-07-14 06:39:20,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE (2 of 25 remaining) [2022-07-14 06:39:20,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr10ASSERT_VIOLATIONMEMORY_FREE (1 of 25 remaining) [2022-07-14 06:39:20,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr11ASSERT_VIOLATIONMEMORY_FREE (0 of 25 remaining) [2022-07-14 06:39:20,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-07-14 06:39:21,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-07-14 06:39:21,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 06:39:21,288 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:39:21,290 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-14 06:39:21,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 06:39:21 BoogieIcfgContainer [2022-07-14 06:39:21,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-14 06:39:21,293 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 06:39:21,293 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 06:39:21,293 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 06:39:21,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:36:07" (3/4) ... [2022-07-14 06:39:21,295 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-14 06:39:21,301 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2022-07-14 06:39:21,301 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure LDV_INIT_LIST_HEAD [2022-07-14 06:39:21,301 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_put [2022-07-14 06:39:21,306 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2022-07-14 06:39:21,307 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-14 06:39:21,307 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-14 06:39:21,307 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-14 06:39:21,342 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 06:39:21,342 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 06:39:21,343 INFO L158 Benchmark]: Toolchain (without parser) took 195044.43ms. Allocated memory was 67.1MB in the beginning and 104.9MB in the end (delta: 37.7MB). Free memory was 48.8MB in the beginning and 23.9MB in the end (delta: 24.8MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2022-07-14 06:39:21,343 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 67.1MB. Free memory was 49.9MB in the beginning and 49.9MB in the end (delta: 54.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 06:39:21,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.77ms. Allocated memory is still 67.1MB. Free memory was 48.5MB in the beginning and 33.4MB in the end (delta: 15.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-14 06:39:21,344 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.73ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 33.2MB in the beginning and 64.5MB in the end (delta: -31.3MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-07-14 06:39:21,344 INFO L158 Benchmark]: Boogie Preprocessor took 61.19ms. Allocated memory is still 81.8MB. Free memory was 64.5MB in the beginning and 62.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 06:39:21,344 INFO L158 Benchmark]: RCFGBuilder took 605.63ms. Allocated memory is still 81.8MB. Free memory was 62.0MB in the beginning and 41.8MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-14 06:39:21,344 INFO L158 Benchmark]: TraceAbstraction took 193649.98ms. Allocated memory was 81.8MB in the beginning and 104.9MB in the end (delta: 23.1MB). Free memory was 41.1MB in the beginning and 28.2MB in the end (delta: 12.8MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2022-07-14 06:39:21,344 INFO L158 Benchmark]: Witness Printer took 49.88ms. Allocated memory is still 104.9MB. Free memory was 28.2MB in the beginning and 23.9MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-14 06:39:21,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 67.1MB. Free memory was 49.9MB in the beginning and 49.9MB in the end (delta: 54.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 574.77ms. Allocated memory is still 67.1MB. Free memory was 48.5MB in the beginning and 33.4MB in the end (delta: 15.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.73ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 33.2MB in the beginning and 64.5MB in the end (delta: -31.3MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.19ms. Allocated memory is still 81.8MB. Free memory was 64.5MB in the beginning and 62.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 605.63ms. Allocated memory is still 81.8MB. Free memory was 62.0MB in the beginning and 41.8MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 193649.98ms. Allocated memory was 81.8MB in the beginning and 104.9MB in the end (delta: 23.1MB). Free memory was 41.1MB in the beginning and 28.2MB in the end (delta: 12.8MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. * Witness Printer took 49.88ms. Allocated memory is still 104.9MB. Free memory was 28.2MB in the beginning and 23.9MB in the end (delta: 4.3MB). 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: 764]: 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 - 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 90 locations, 25 error locations. Started 1 CEGAR loops. OverallTime: 193.6s, OverallIterations: 33, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 76.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2578 SdHoareTripleChecker+Valid, 12.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2555 mSDsluCounter, 15831 SdHoareTripleChecker+Invalid, 10.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1706 IncrementalHoareTripleChecker+Unchecked, 13372 mSDsCounter, 393 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8375 IncrementalHoareTripleChecker+Invalid, 10474 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 393 mSolverCounterUnsat, 2459 mSDtfsCounter, 8375 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2427 GetRequests, 1752 SyntacticMatches, 48 SemanticMatches, 627 ConstructedPredicates, 14 IntricatePredicates, 4 DeprecatedPredicates, 6959 ImplicationChecksByTransitivity, 149.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=27, InterpolantAutomatonStates: 436, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 33 MinimizatonAttempts, 304 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 6.0s SatisfiabilityAnalysisTime, 98.7s InterpolantComputationTime, 1724 NumberOfCodeBlocks, 1694 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1889 ConstructedInterpolants, 220 QuantifiedInterpolants, 19148 SizeOfPredicates, 778 NumberOfNonLiveVariables, 11005 ConjunctsInSsa, 1408 ConjunctsInUnsatCore, 42 InterpolantComputations, 24 PerfectInterpolantSequences, 2959/3841 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 25 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-14 06:39:21,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE