./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a31fd051 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_test17_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 13:08:57,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:08:57,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:08:57,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:08:57,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:08:57,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:08:57,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:08:57,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:08:57,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:08:57,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:08:57,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:08:57,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:08:57,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:08:57,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:08:57,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:08:57,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:08:57,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:08:57,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:08:57,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:08:57,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:08:57,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:08:57,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:08:57,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:08:57,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:08:57,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:08:57,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:08:57,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:08:57,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:08:57,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:08:57,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:08:57,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:08:57,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:08:57,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:08:57,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:08:57,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:08:57,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:08:57,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:08:57,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:08:57,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:08:57,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:08:57,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:08:57,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 13:08:57,718 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:08:57,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:08:57,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:08:57,719 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:08:57,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:08:57,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:08:57,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:08:57,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:08:57,720 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:08:57,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:08:57,720 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 13:08:57,720 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:08:57,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:08:57,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 13:08:57,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:08:57,721 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 13:08:57,721 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 13:08:57,721 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 13:08:57,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:08:57,721 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 13:08:57,722 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 13:08:57,722 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:08:57,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:08:57,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:08:57,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:08:57,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:08:57,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:08:57,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:08:57,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 13:08:57,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 13:08:57,724 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:08:57,724 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:08:57,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:08:57,724 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:08:57,724 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 [2023-02-15 13:08:57,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:08:57,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:08:57,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:08:57,946 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:08:57,946 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:08:57,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2023-02-15 13:08:58,913 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:08:59,119 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:08:59,121 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2023-02-15 13:08:59,140 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81cce6484/74debabda324405687dd80013328255e/FLAGc71fa5d9e [2023-02-15 13:08:59,152 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81cce6484/74debabda324405687dd80013328255e [2023-02-15 13:08:59,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:08:59,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:08:59,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:08:59,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:08:59,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:08:59,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:08:59" (1/1) ... [2023-02-15 13:08:59,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4b1b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:08:59, skipping insertion in model container [2023-02-15 13:08:59,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:08:59" (1/1) ... [2023-02-15 13:08:59,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:08:59,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:08:59,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:08:59,540 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) [2023-02-15 13:08:59,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4048c2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:08:59, skipping insertion in model container [2023-02-15 13:08:59,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:08:59,542 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-15 13:08:59,543 INFO L158 Benchmark]: Toolchain (without parser) took 386.68ms. Allocated memory is still 121.6MB. Free memory was 75.7MB in the beginning and 88.5MB in the end (delta: -12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 13:08:59,544 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:08:59,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.29ms. Allocated memory is still 121.6MB. Free memory was 75.7MB in the beginning and 88.5MB in the end (delta: -12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 13:08:59,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.29ms. Allocated memory is still 121.6MB. Free memory was 75.7MB in the beginning and 88.5MB in the end (delta: -12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 13:09:01,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:09:01,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:09:01,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:09:01,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:09:01,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:09:01,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:09:01,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:09:01,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:09:01,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:09:01,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:09:01,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:09:01,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:09:01,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:09:01,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:09:01,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:09:01,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:09:01,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:09:01,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:09:01,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:09:01,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:09:01,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:09:01,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:09:01,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:09:01,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:09:01,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:09:01,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:09:01,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:09:01,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:09:01,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:09:01,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:09:01,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:09:01,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:09:01,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:09:01,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:09:01,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:09:01,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:09:01,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:09:01,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:09:01,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:09:01,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:09:01,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 13:09:01,194 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:09:01,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:09:01,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:09:01,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:09:01,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:09:01,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:09:01,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:09:01,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:09:01,197 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:09:01,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:09:01,198 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 13:09:01,198 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:09:01,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:09:01,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 13:09:01,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:09:01,198 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 13:09:01,199 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 13:09:01,199 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 13:09:01,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:09:01,199 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 13:09:01,199 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 13:09:01,199 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 13:09:01,200 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 13:09:01,200 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:09:01,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:09:01,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:09:01,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:09:01,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:09:01,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:09:01,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:09:01,201 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 13:09:01,201 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 13:09:01,201 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:09:01,201 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:09:01,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:09:01,202 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 13:09:01,202 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:09:01,202 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 [2023-02-15 13:09:01,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:09:01,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:09:01,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:09:01,467 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:09:01,467 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:09:01,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2023-02-15 13:09:02,335 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:09:02,552 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:09:02,552 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2023-02-15 13:09:02,579 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9278057fd/4ff338c7076b40159c4088eaa3536f68/FLAG1256fbaf8 [2023-02-15 13:09:02,914 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9278057fd/4ff338c7076b40159c4088eaa3536f68 [2023-02-15 13:09:02,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:09:02,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:09:02,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:09:02,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:09:02,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:09:02,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:09:02" (1/1) ... [2023-02-15 13:09:02,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362a1d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:02, skipping insertion in model container [2023-02-15 13:09:02,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:09:02" (1/1) ... [2023-02-15 13:09:02,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:09:02,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:09:03,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:09:03,184 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-15 13:09:03,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:09:03,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:09:03,254 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 13:09:03,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:09:03,350 INFO L208 MainTranslator]: Completed translation [2023-02-15 13:09:03,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03 WrapperNode [2023-02-15 13:09:03,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:09:03,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 13:09:03,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 13:09:03,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 13:09:03,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03" (1/1) ... [2023-02-15 13:09:03,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03" (1/1) ... [2023-02-15 13:09:03,414 INFO L138 Inliner]: procedures = 167, calls = 79, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 88 [2023-02-15 13:09:03,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 13:09:03,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 13:09:03,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 13:09:03,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 13:09:03,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03" (1/1) ... [2023-02-15 13:09:03,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03" (1/1) ... [2023-02-15 13:09:03,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03" (1/1) ... [2023-02-15 13:09:03,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03" (1/1) ... [2023-02-15 13:09:03,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03" (1/1) ... [2023-02-15 13:09:03,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03" (1/1) ... [2023-02-15 13:09:03,457 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03" (1/1) ... [2023-02-15 13:09:03,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03" (1/1) ... [2023-02-15 13:09:03,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 13:09:03,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 13:09:03,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 13:09:03,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 13:09:03,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03" (1/1) ... [2023-02-15 13:09:03,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:09:03,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:09:03,492 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) [2023-02-15 13:09:03,500 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 [2023-02-15 13:09:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-02-15 13:09:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-02-15 13:09:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 13:09:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 13:09:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 13:09:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 13:09:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 13:09:03,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-15 13:09:03,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 13:09:03,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 13:09:03,638 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 13:09:03,640 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 13:09:03,908 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 13:09:03,913 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 13:09:03,915 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 13:09:03,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:09:03 BoogieIcfgContainer [2023-02-15 13:09:03,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 13:09:03,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 13:09:03,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 13:09:03,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 13:09:03,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:09:02" (1/3) ... [2023-02-15 13:09:03,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335e7cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:09:03, skipping insertion in model container [2023-02-15 13:09:03,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:09:03" (2/3) ... [2023-02-15 13:09:03,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335e7cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:09:03, skipping insertion in model container [2023-02-15 13:09:03,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:09:03" (3/3) ... [2023-02-15 13:09:03,923 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-2.i [2023-02-15 13:09:03,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 13:09:03,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-02-15 13:09:03,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 13:09:03,983 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=PETRI_NET, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@577593ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 13:09:03,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-02-15 13:09:03,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 40 states have (on average 1.775) internal successors, (71), 60 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 13:09:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 13:09:03,992 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:03,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:03,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:03,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2113718075, now seen corresponding path program 1 times [2023-02-15 13:09:04,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:04,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109211146] [2023-02-15 13:09:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:04,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:04,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:04,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:04,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 13:09:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:04,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 13:09:04,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:04,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:09:04,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:04,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109211146] [2023-02-15 13:09:04,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109211146] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:09:04,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:09:04,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 13:09:04,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797313539] [2023-02-15 13:09:04,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:09:04,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:09:04,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:04,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:09:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:09:04,186 INFO L87 Difference]: Start difference. First operand has 64 states, 40 states have (on average 1.775) internal successors, (71), 60 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2023-02-15 13:09:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:04,298 INFO L93 Difference]: Finished difference Result 122 states and 137 transitions. [2023-02-15 13:09:04,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 13:09:04,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 [2023-02-15 13:09:04,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:04,307 INFO L225 Difference]: With dead ends: 122 [2023-02-15 13:09:04,308 INFO L226 Difference]: Without dead ends: 118 [2023-02-15 13:09:04,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:09:04,311 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 59 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:04,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 247 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:09:04,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-02-15 13:09:04,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 66. [2023-02-15 13:09:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.619047619047619) internal successors, (68), 61 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 13:09:04,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2023-02-15 13:09:04,342 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 11 [2023-02-15 13:09:04,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:04,343 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2023-02-15 13:09:04,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2023-02-15 13:09:04,343 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2023-02-15 13:09:04,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 13:09:04,344 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:04,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:04,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:04,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:04,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:04,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:04,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2113616981, now seen corresponding path program 1 times [2023-02-15 13:09:04,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:04,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488554731] [2023-02-15 13:09:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:04,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:04,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:04,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:04,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-15 13:09:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:04,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 13:09:04,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:04,640 INFO L350 Elim1Store]: Elim1 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 7 [2023-02-15 13:09:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:04,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:09:04,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:04,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488554731] [2023-02-15 13:09:04,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488554731] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:09:04,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:09:04,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:09:04,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405813914] [2023-02-15 13:09:04,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:09:04,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:09:04,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:04,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:09:04,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:09:04,677 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2023-02-15 13:09:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:04,826 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2023-02-15 13:09:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 13:09:04,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2023-02-15 13:09:04,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:04,829 INFO L225 Difference]: With dead ends: 90 [2023-02-15 13:09:04,829 INFO L226 Difference]: Without dead ends: 90 [2023-02-15 13:09:04,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:09:04,830 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 24 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:04,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 172 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:09:04,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-15 13:09:04,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2023-02-15 13:09:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 53 states have (on average 1.6037735849056605) internal successors, (85), 72 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 13:09:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2023-02-15 13:09:04,844 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 11 [2023-02-15 13:09:04,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:04,846 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2023-02-15 13:09:04,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2023-02-15 13:09:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2023-02-15 13:09:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 13:09:04,847 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:04,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:04,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:05,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:05,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2113616982, now seen corresponding path program 1 times [2023-02-15 13:09:05,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:05,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031479963] [2023-02-15 13:09:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:05,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:05,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:05,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:05,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-15 13:09:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:05,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 13:09:05,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:05,131 INFO L350 Elim1Store]: Elim1 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 [2023-02-15 13:09:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:05,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:09:05,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:05,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031479963] [2023-02-15 13:09:05,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031479963] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:09:05,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:09:05,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 13:09:05,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545619848] [2023-02-15 13:09:05,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:09:05,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 13:09:05,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:05,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 13:09:05,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:09:05,229 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2023-02-15 13:09:05,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:05,495 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2023-02-15 13:09:05,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 13:09:05,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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 [2023-02-15 13:09:05,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:05,497 INFO L225 Difference]: With dead ends: 114 [2023-02-15 13:09:05,497 INFO L226 Difference]: Without dead ends: 114 [2023-02-15 13:09:05,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-15 13:09:05,498 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 100 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:05,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 365 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:09:05,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-02-15 13:09:05,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2023-02-15 13:09:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 73 states have (on average 1.5753424657534247) internal successors, (115), 92 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 13:09:05,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2023-02-15 13:09:05,505 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 11 [2023-02-15 13:09:05,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:05,506 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2023-02-15 13:09:05,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2023-02-15 13:09:05,506 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2023-02-15 13:09:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 13:09:05,506 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:05,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:05,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:05,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:05,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:05,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:05,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1293745540, now seen corresponding path program 1 times [2023-02-15 13:09:05,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:05,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675766343] [2023-02-15 13:09:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:05,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:05,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:05,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:05,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-15 13:09:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:05,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 13:09:05,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:05,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:09:05,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:05,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675766343] [2023-02-15 13:09:05,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675766343] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:09:05,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:09:05,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:09:05,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644143972] [2023-02-15 13:09:05,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:09:05,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:09:05,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:05,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:09:05,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:09:05,799 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2023-02-15 13:09:05,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:05,875 INFO L93 Difference]: Finished difference Result 141 states and 170 transitions. [2023-02-15 13:09:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:09:05,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 [2023-02-15 13:09:05,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:05,877 INFO L225 Difference]: With dead ends: 141 [2023-02-15 13:09:05,877 INFO L226 Difference]: Without dead ends: 139 [2023-02-15 13:09:05,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:09:05,878 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 47 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 192 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 [2023-02-15 13:09:05,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 192 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:09:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-02-15 13:09:05,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 97. [2023-02-15 13:09:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 92 states have internal predecessors, (114), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 13:09:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 120 transitions. [2023-02-15 13:09:05,884 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 120 transitions. Word has length 11 [2023-02-15 13:09:05,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:05,884 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 120 transitions. [2023-02-15 13:09:05,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2023-02-15 13:09:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 120 transitions. [2023-02-15 13:09:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 13:09:05,885 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:05,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:05,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:06,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:06,086 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:06,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1293846634, now seen corresponding path program 1 times [2023-02-15 13:09:06,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:06,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611088445] [2023-02-15 13:09:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:06,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:06,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:06,088 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:06,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-15 13:09:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:06,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 13:09:06,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:06,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:09:06,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:06,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611088445] [2023-02-15 13:09:06,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611088445] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:09:06,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:09:06,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 13:09:06,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672421408] [2023-02-15 13:09:06,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:09:06,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:09:06,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:06,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:09:06,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:09:06,153 INFO L87 Difference]: Start difference. First operand 97 states and 120 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2023-02-15 13:09:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:06,179 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2023-02-15 13:09:06,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 13:09:06,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 [2023-02-15 13:09:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:06,180 INFO L225 Difference]: With dead ends: 83 [2023-02-15 13:09:06,181 INFO L226 Difference]: Without dead ends: 81 [2023-02-15 13:09:06,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:09:06,182 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:06,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:09:06,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-15 13:09:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-02-15 13:09:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 77 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2023-02-15 13:09:06,186 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 11 [2023-02-15 13:09:06,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:06,186 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2023-02-15 13:09:06,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2023-02-15 13:09:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2023-02-15 13:09:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 13:09:06,187 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:06,187 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:06,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:06,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:06,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:06,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:06,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1752049815, now seen corresponding path program 1 times [2023-02-15 13:09:06,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:06,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703297047] [2023-02-15 13:09:06,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:06,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:06,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:06,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:06,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-15 13:09:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:06,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 13:09:06,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:06,498 INFO L350 Elim1Store]: Elim1 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 [2023-02-15 13:09:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:06,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:09:07,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:07,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:07,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703297047] [2023-02-15 13:09:07,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703297047] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:09:07,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:09:07,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-02-15 13:09:07,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70059018] [2023-02-15 13:09:07,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:09:07,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 13:09:07,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:07,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 13:09:07,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-02-15 13:09:07,073 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 13:09:08,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:08,113 INFO L93 Difference]: Finished difference Result 165 states and 189 transitions. [2023-02-15 13:09:08,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 13:09:08,114 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-02-15 13:09:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:08,115 INFO L225 Difference]: With dead ends: 165 [2023-02-15 13:09:08,115 INFO L226 Difference]: Without dead ends: 165 [2023-02-15 13:09:08,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2023-02-15 13:09:08,116 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 466 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:08,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 417 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 13:09:08,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-02-15 13:09:08,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 90. [2023-02-15 13:09:08,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 86 states have internal predecessors, (102), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2023-02-15 13:09:08,121 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 14 [2023-02-15 13:09:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:08,122 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2023-02-15 13:09:08,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 13:09:08,122 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2023-02-15 13:09:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 13:09:08,123 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:08,123 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:08,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:08,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:08,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:08,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:08,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1183774854, now seen corresponding path program 1 times [2023-02-15 13:09:08,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:08,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086973301] [2023-02-15 13:09:08,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:08,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:08,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:08,331 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:08,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-15 13:09:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:08,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 13:09:08,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:08,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:09:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:08,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:08,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086973301] [2023-02-15 13:09:08,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086973301] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:09:08,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:09:08,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-02-15 13:09:08,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546421539] [2023-02-15 13:09:08,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:09:08,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 13:09:08,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:08,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 13:09:08,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-15 13:09:08,514 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 13:09:08,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:08,636 INFO L93 Difference]: Finished difference Result 96 states and 111 transitions. [2023-02-15 13:09:08,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 13:09:08,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-02-15 13:09:08,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:08,638 INFO L225 Difference]: With dead ends: 96 [2023-02-15 13:09:08,638 INFO L226 Difference]: Without dead ends: 96 [2023-02-15 13:09:08,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-02-15 13:09:08,639 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 79 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:08,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 237 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:09:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-02-15 13:09:08,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2023-02-15 13:09:08,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 91 states have internal predecessors, (106), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:08,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2023-02-15 13:09:08,643 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 22 [2023-02-15 13:09:08,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:08,643 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2023-02-15 13:09:08,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 13:09:08,643 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2023-02-15 13:09:08,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 13:09:08,643 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:08,643 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:08,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:08,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:08,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:08,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:08,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1595807082, now seen corresponding path program 2 times [2023-02-15 13:09:08,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:08,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369930812] [2023-02-15 13:09:08,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:09:08,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:08,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:08,859 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:08,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-15 13:09:08,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:09:08,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:09:08,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 13:09:08,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:08,959 INFO L350 Elim1Store]: Elim1 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 [2023-02-15 13:09:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:09,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:09:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:10,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:10,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369930812] [2023-02-15 13:09:10,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369930812] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:09:10,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:09:10,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-02-15 13:09:10,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20652780] [2023-02-15 13:09:10,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:09:10,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 13:09:10,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:10,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 13:09:10,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-02-15 13:09:10,355 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 13:09:13,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:13,653 INFO L93 Difference]: Finished difference Result 123 states and 139 transitions. [2023-02-15 13:09:13,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 13:09:13,654 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2023-02-15 13:09:13,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:13,654 INFO L225 Difference]: With dead ends: 123 [2023-02-15 13:09:13,654 INFO L226 Difference]: Without dead ends: 123 [2023-02-15 13:09:13,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=311, Invalid=1021, Unknown=0, NotChecked=0, Total=1332 [2023-02-15 13:09:13,655 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 308 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:13,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 583 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-15 13:09:13,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-02-15 13:09:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2023-02-15 13:09:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 104 states have internal predecessors, (122), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:13,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2023-02-15 13:09:13,660 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 23 [2023-02-15 13:09:13,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:13,660 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2023-02-15 13:09:13,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 13:09:13,660 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2023-02-15 13:09:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-15 13:09:13,660 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:13,661 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:13,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-02-15 13:09:13,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:13,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash 582541894, now seen corresponding path program 2 times [2023-02-15 13:09:13,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:13,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050480755] [2023-02-15 13:09:13,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:09:13,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:13,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:13,869 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:13,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-15 13:09:13,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 13:09:13,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:09:13,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 13:09:13,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-15 13:09:13,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:09:13,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:13,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050480755] [2023-02-15 13:09:13,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050480755] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:09:13,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:09:13,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:09:13,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060710261] [2023-02-15 13:09:13,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:09:13,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:09:13,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:13,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:09:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:09:13,967 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2023-02-15 13:09:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:14,006 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2023-02-15 13:09:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:09:14,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 [2023-02-15 13:09:14,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:14,007 INFO L225 Difference]: With dead ends: 138 [2023-02-15 13:09:14,007 INFO L226 Difference]: Without dead ends: 138 [2023-02-15 13:09:14,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:09:14,008 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 144 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:14,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 121 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:09:14,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-15 13:09:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 93. [2023-02-15 13:09:14,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 70 states have (on average 1.4) internal successors, (98), 89 states have internal predecessors, (98), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:14,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2023-02-15 13:09:14,017 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 34 [2023-02-15 13:09:14,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:14,018 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2023-02-15 13:09:14,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2023-02-15 13:09:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2023-02-15 13:09:14,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 13:09:14,018 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:14,018 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:14,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:14,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:14,225 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:14,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash 324400124, now seen corresponding path program 1 times [2023-02-15 13:09:14,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:14,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896958365] [2023-02-15 13:09:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:14,226 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:14,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:14,227 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:14,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-15 13:09:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:14,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 13:09:14,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:14,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:09:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 13:09:14,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:14,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896958365] [2023-02-15 13:09:14,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896958365] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:09:14,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:09:14,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-02-15 13:09:14,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656509373] [2023-02-15 13:09:14,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:09:14,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 13:09:14,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:14,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 13:09:14,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-02-15 13:09:14,624 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-15 13:09:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:14,868 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2023-02-15 13:09:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 13:09:14,869 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2023-02-15 13:09:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:14,869 INFO L225 Difference]: With dead ends: 93 [2023-02-15 13:09:14,869 INFO L226 Difference]: Without dead ends: 93 [2023-02-15 13:09:14,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2023-02-15 13:09:14,870 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 135 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:14,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 451 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:09:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-15 13:09:14,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-02-15 13:09:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 89 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2023-02-15 13:09:14,873 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 38 [2023-02-15 13:09:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:14,873 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2023-02-15 13:09:14,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-15 13:09:14,873 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2023-02-15 13:09:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-15 13:09:14,874 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:14,874 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:14,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:15,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:15,075 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:15,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:15,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1755014154, now seen corresponding path program 3 times [2023-02-15 13:09:15,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:15,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432666475] [2023-02-15 13:09:15,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 13:09:15,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:15,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:15,076 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:15,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-15 13:09:15,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 13:09:15,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:09:15,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 13:09:15,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:15,245 INFO L350 Elim1Store]: Elim1 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 [2023-02-15 13:09:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:15,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:09:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:21,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:21,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432666475] [2023-02-15 13:09:21,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432666475] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:09:21,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:09:21,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 36 [2023-02-15 13:09:21,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089566488] [2023-02-15 13:09:21,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:09:21,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-15 13:09:21,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:21,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-15 13:09:21,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2023-02-15 13:09:21,283 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 13:09:25,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:25,299 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2023-02-15 13:09:25,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-15 13:09:25,300 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-02-15 13:09:25,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:25,301 INFO L225 Difference]: With dead ends: 141 [2023-02-15 13:09:25,301 INFO L226 Difference]: Without dead ends: 141 [2023-02-15 13:09:25,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2023-02-15 13:09:25,302 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 714 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:25,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 868 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-02-15 13:09:25,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-02-15 13:09:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 91. [2023-02-15 13:09:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 69 states have (on average 1.318840579710145) internal successors, (91), 87 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2023-02-15 13:09:25,305 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 41 [2023-02-15 13:09:25,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:25,305 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2023-02-15 13:09:25,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 13:09:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2023-02-15 13:09:25,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 13:09:25,306 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:25,306 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:25,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:25,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:25,514 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:25,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1745592900, now seen corresponding path program 2 times [2023-02-15 13:09:25,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:25,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670291626] [2023-02-15 13:09:25,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:09:25,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:25,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:25,516 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:25,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-15 13:09:25,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:09:25,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:09:25,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 13:09:25,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:25,652 INFO L350 Elim1Store]: Elim1 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 7 [2023-02-15 13:09:25,658 INFO L350 Elim1Store]: Elim1 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 [2023-02-15 13:09:25,871 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_269 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_269))))) is different from true [2023-02-15 13:09:25,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:09:25,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2023-02-15 13:09:25,890 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-15 13:09:25,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2023-02-15 13:09:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2023-02-15 13:09:25,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:09:30,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:30,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670291626] [2023-02-15 13:09:30,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670291626] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:09:30,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1434304239] [2023-02-15 13:09:30,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:09:30,149 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-15 13:09:30,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-15 13:09:30,150 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-15 13:09:30,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-02-15 13:09:30,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:09:30,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:09:30,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 13:09:30,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:30,395 INFO L350 Elim1Store]: Elim1 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 [2023-02-15 13:09:30,400 INFO L350 Elim1Store]: Elim1 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 7 [2023-02-15 13:09:30,592 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_339 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_339) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2023-02-15 13:09:30,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:09:30,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2023-02-15 13:09:30,624 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-15 13:09:30,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2023-02-15 13:09:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2023-02-15 13:09:30,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:09:32,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1434304239] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:09:32,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:09:32,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2023-02-15 13:09:32,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372209100] [2023-02-15 13:09:32,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:09:32,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 13:09:32,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:32,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 13:09:32,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=108, Unknown=3, NotChecked=42, Total=182 [2023-02-15 13:09:32,839 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:33,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:33,538 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2023-02-15 13:09:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 13:09:33,538 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2023-02-15 13:09:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:33,539 INFO L225 Difference]: With dead ends: 225 [2023-02-15 13:09:33,539 INFO L226 Difference]: Without dead ends: 225 [2023-02-15 13:09:33,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=69, Invalid=278, Unknown=3, NotChecked=70, Total=420 [2023-02-15 13:09:33,540 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 242 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:33,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 478 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 503 Invalid, 0 Unknown, 224 Unchecked, 0.5s Time] [2023-02-15 13:09:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-02-15 13:09:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 126. [2023-02-15 13:09:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 102 states have (on average 1.4215686274509804) internal successors, (145), 119 states have internal predecessors, (145), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-15 13:09:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 156 transitions. [2023-02-15 13:09:33,545 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 156 transitions. Word has length 50 [2023-02-15 13:09:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:33,545 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 156 transitions. [2023-02-15 13:09:33,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 156 transitions. [2023-02-15 13:09:33,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 13:09:33,546 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:33,546 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:33,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:33,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:33,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:33,961 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:33,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:33,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1745592901, now seen corresponding path program 1 times [2023-02-15 13:09:33,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:33,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935004879] [2023-02-15 13:09:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:33,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:33,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:33,963 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:33,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-15 13:09:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:34,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 13:09:34,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:34,082 INFO L350 Elim1Store]: Elim1 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 7 [2023-02-15 13:09:34,149 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2023-02-15 13:09:34,164 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-15 13:09:34,164 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-15 13:09:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2023-02-15 13:09:34,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:09:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-15 13:09:34,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:34,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935004879] [2023-02-15 13:09:34,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935004879] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:09:34,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:09:34,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2023-02-15 13:09:34,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544304845] [2023-02-15 13:09:34,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:09:34,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 13:09:34,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:34,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 13:09:34,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2023-02-15 13:09:34,310 INFO L87 Difference]: Start difference. First operand 126 states and 156 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:34,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:34,504 INFO L93 Difference]: Finished difference Result 172 states and 206 transitions. [2023-02-15 13:09:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 13:09:34,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2023-02-15 13:09:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:34,505 INFO L225 Difference]: With dead ends: 172 [2023-02-15 13:09:34,505 INFO L226 Difference]: Without dead ends: 172 [2023-02-15 13:09:34,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2023-02-15 13:09:34,506 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 101 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:34,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 208 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 155 Invalid, 0 Unknown, 94 Unchecked, 0.2s Time] [2023-02-15 13:09:34,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-02-15 13:09:34,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 118. [2023-02-15 13:09:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 96 states have (on average 1.3229166666666667) internal successors, (127), 111 states have internal predecessors, (127), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-15 13:09:34,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 138 transitions. [2023-02-15 13:09:34,512 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 138 transitions. Word has length 50 [2023-02-15 13:09:34,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:34,513 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 138 transitions. [2023-02-15 13:09:34,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:34,513 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 138 transitions. [2023-02-15 13:09:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-15 13:09:34,514 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:34,514 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:34,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:34,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:34,722 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:34,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:34,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1817385993, now seen corresponding path program 1 times [2023-02-15 13:09:34,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:34,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874467478] [2023-02-15 13:09:34,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:34,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:34,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:34,724 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:34,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-15 13:09:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:34,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 13:09:34,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-02-15 13:09:34,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:09:34,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:34,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874467478] [2023-02-15 13:09:34,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874467478] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:09:34,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:09:34,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 13:09:34,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261108348] [2023-02-15 13:09:34,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:09:34,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:09:34,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:34,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:09:34,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:09:34,844 INFO L87 Difference]: Start difference. First operand 118 states and 138 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 13:09:34,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:34,875 INFO L93 Difference]: Finished difference Result 155 states and 180 transitions. [2023-02-15 13:09:34,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 13:09:34,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2023-02-15 13:09:34,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:34,878 INFO L225 Difference]: With dead ends: 155 [2023-02-15 13:09:34,878 INFO L226 Difference]: Without dead ends: 155 [2023-02-15 13:09:34,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 13:09:34,879 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 29 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:34,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 246 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:09:34,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-15 13:09:34,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2023-02-15 13:09:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 112 states have internal predecessors, (128), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-15 13:09:34,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2023-02-15 13:09:34,882 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 52 [2023-02-15 13:09:34,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:34,882 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2023-02-15 13:09:34,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 13:09:34,883 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2023-02-15 13:09:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-15 13:09:34,884 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:34,884 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:34,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:35,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:35,093 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:35,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:35,093 INFO L85 PathProgramCache]: Analyzing trace with hash -734770968, now seen corresponding path program 1 times [2023-02-15 13:09:35,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:35,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138357249] [2023-02-15 13:09:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:35,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:35,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:35,095 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:35,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-02-15 13:09:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:35,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 13:09:35,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-15 13:09:35,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:09:35,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:35,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138357249] [2023-02-15 13:09:35,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138357249] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:09:35,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:09:35,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:09:35,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213333518] [2023-02-15 13:09:35,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:09:35,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:09:35,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:35,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:09:35,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:09:35,221 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 13:09:35,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:35,280 INFO L93 Difference]: Finished difference Result 152 states and 173 transitions. [2023-02-15 13:09:35,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:09:35,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2023-02-15 13:09:35,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:35,281 INFO L225 Difference]: With dead ends: 152 [2023-02-15 13:09:35,282 INFO L226 Difference]: Without dead ends: 152 [2023-02-15 13:09:35,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:09:35,282 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 51 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:35,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 192 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:09:35,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-02-15 13:09:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 122. [2023-02-15 13:09:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 100 states have (on average 1.3) internal successors, (130), 114 states have internal predecessors, (130), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-15 13:09:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2023-02-15 13:09:35,285 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 52 [2023-02-15 13:09:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:35,285 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2023-02-15 13:09:35,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 13:09:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2023-02-15 13:09:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-15 13:09:35,286 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:35,286 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:35,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:35,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:35,486 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:35,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:35,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1885083517, now seen corresponding path program 1 times [2023-02-15 13:09:35,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:35,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589563894] [2023-02-15 13:09:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:35,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:35,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:35,488 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:35,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-02-15 13:09:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:35,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 13:09:35,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:35,603 INFO L350 Elim1Store]: Elim1 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 7 [2023-02-15 13:09:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-15 13:09:35,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:09:35,785 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-15 13:09:35,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:35,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589563894] [2023-02-15 13:09:35,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589563894] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:09:35,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:09:35,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-02-15 13:09:35,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302937795] [2023-02-15 13:09:35,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:09:35,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 13:09:35,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:35,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 13:09:35,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:09:35,787 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:35,947 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2023-02-15 13:09:35,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 13:09:35,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2023-02-15 13:09:35,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:35,948 INFO L225 Difference]: With dead ends: 140 [2023-02-15 13:09:35,948 INFO L226 Difference]: Without dead ends: 140 [2023-02-15 13:09:35,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-15 13:09:35,949 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 47 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:35,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 218 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:09:35,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-02-15 13:09:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 123. [2023-02-15 13:09:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 101 states have (on average 1.306930693069307) internal successors, (132), 115 states have internal predecessors, (132), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-15 13:09:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2023-02-15 13:09:35,952 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 55 [2023-02-15 13:09:35,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:35,952 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2023-02-15 13:09:35,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 13:09:35,952 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2023-02-15 13:09:35,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-15 13:09:35,952 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:35,953 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:35,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:36,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:36,163 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:36,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:36,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1885083518, now seen corresponding path program 1 times [2023-02-15 13:09:36,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:36,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929119508] [2023-02-15 13:09:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:36,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:36,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:36,165 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:36,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-02-15 13:09:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:36,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 13:09:36,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:36,294 INFO L350 Elim1Store]: Elim1 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 [2023-02-15 13:09:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-15 13:09:36,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:09:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-15 13:09:37,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:37,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929119508] [2023-02-15 13:09:37,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929119508] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:09:37,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:09:37,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-02-15 13:09:37,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108422972] [2023-02-15 13:09:37,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:09:37,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 13:09:37,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:37,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 13:09:37,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-02-15 13:09:37,192 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 13:09:38,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:38,175 INFO L93 Difference]: Finished difference Result 193 states and 214 transitions. [2023-02-15 13:09:38,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 13:09:38,176 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2023-02-15 13:09:38,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:38,177 INFO L225 Difference]: With dead ends: 193 [2023-02-15 13:09:38,177 INFO L226 Difference]: Without dead ends: 193 [2023-02-15 13:09:38,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-02-15 13:09:38,178 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 247 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:38,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 543 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 13:09:38,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-02-15 13:09:38,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 149. [2023-02-15 13:09:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 127 states have (on average 1.4015748031496063) internal successors, (178), 141 states have internal predecessors, (178), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-15 13:09:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 189 transitions. [2023-02-15 13:09:38,181 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 189 transitions. Word has length 55 [2023-02-15 13:09:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:38,181 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 189 transitions. [2023-02-15 13:09:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 13:09:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 189 transitions. [2023-02-15 13:09:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 13:09:38,181 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:38,181 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:38,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:38,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:38,390 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:38,390 INFO L85 PathProgramCache]: Analyzing trace with hash 992549453, now seen corresponding path program 1 times [2023-02-15 13:09:38,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:38,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430917652] [2023-02-15 13:09:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:38,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:38,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:38,392 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:38,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-02-15 13:09:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:38,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 13:09:38,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-15 13:09:38,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:09:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-15 13:09:38,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:09:38,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430917652] [2023-02-15 13:09:38,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430917652] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:09:38,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:09:38,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 13:09:38,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694854851] [2023-02-15 13:09:38,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:09:38,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 13:09:38,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:09:38,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 13:09:38,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:09:38,650 INFO L87 Difference]: Start difference. First operand 149 states and 189 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 13:09:38,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:09:38,781 INFO L93 Difference]: Finished difference Result 422 states and 555 transitions. [2023-02-15 13:09:38,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 13:09:38,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2023-02-15 13:09:38,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:09:38,783 INFO L225 Difference]: With dead ends: 422 [2023-02-15 13:09:38,783 INFO L226 Difference]: Without dead ends: 422 [2023-02-15 13:09:38,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-02-15 13:09:38,783 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 500 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:09:38,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 285 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:09:38,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-02-15 13:09:38,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 181. [2023-02-15 13:09:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 155 states have (on average 1.3806451612903226) internal successors, (214), 167 states have internal predecessors, (214), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2023-02-15 13:09:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 237 transitions. [2023-02-15 13:09:38,788 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 237 transitions. Word has length 56 [2023-02-15 13:09:38,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:09:38,788 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 237 transitions. [2023-02-15 13:09:38,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 13:09:38,788 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 237 transitions. [2023-02-15 13:09:38,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 13:09:38,789 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:09:38,789 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:09:38,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-02-15 13:09:38,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:38,997 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-02-15 13:09:38,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:09:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1691953052, now seen corresponding path program 1 times [2023-02-15 13:09:38,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:09:38,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292191771] [2023-02-15 13:09:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:09:38,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 13:09:38,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:09:38,999 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 13:09:39,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-02-15 13:09:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:09:39,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-15 13:09:39,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:09:39,150 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 11 [2023-02-15 13:09:39,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 27 [2023-02-15 13:09:39,211 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2023-02-15 13:09:39,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 13:09:39,253 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2023-02-15 13:09:39,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 13:09:39,290 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2023-02-15 13:09:39,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 13:09:39,328 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2023-02-15 13:09:39,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 13:09:39,359 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2023-02-15 13:09:39,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 13:09:39,389 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2023-02-15 13:09:39,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 13:09:39,433 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2023-02-15 13:09:39,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 13:09:39,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2023-02-15 13:09:39,569 INFO L350 Elim1Store]: Elim1 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 [2023-02-15 13:09:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:09:39,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:09:44,382 INFO L350 Elim1Store]: Elim1 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 86 treesize of output 84 [2023-02-15 13:09:58,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2955212377423854 treesize of output 2954937499516910