./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 06:13:02,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 06:13:02,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 06:13:02,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 06:13:02,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 06:13:02,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 06:13:02,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 06:13:02,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 06:13:02,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 06:13:02,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 06:13:02,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 06:13:02,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 06:13:02,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 06:13:02,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 06:13:02,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 06:13:02,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 06:13:02,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 06:13:02,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 06:13:02,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 06:13:02,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 06:13:02,192 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 06:13:02,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 06:13:02,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 06:13:02,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 06:13:02,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 06:13:02,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 06:13:02,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 06:13:02,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 06:13:02,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 06:13:02,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 06:13:02,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 06:13:02,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 06:13:02,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 06:13:02,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 06:13:02,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 06:13:02,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 06:13:02,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 06:13:02,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 06:13:02,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 06:13:02,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 06:13:02,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 06:13:02,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 06:13:02,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-23 06:13:02,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 06:13:02,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 06:13:02,250 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 06:13:02,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 06:13:02,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 06:13:02,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 06:13:02,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 06:13:02,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 06:13:02,252 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 06:13:02,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 06:13:02,253 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 06:13:02,253 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 06:13:02,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 06:13:02,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 06:13:02,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 06:13:02,254 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 06:13:02,254 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 06:13:02,254 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 06:13:02,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 06:13:02,254 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 06:13:02,254 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 06:13:02,255 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 06:13:02,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 06:13:02,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 06:13:02,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 06:13:02,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 06:13:02,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 06:13:02,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 06:13:02,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 06:13:02,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 06:13:02,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c [2022-07-23 06:13:02,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 06:13:02,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 06:13:02,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 06:13:02,550 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 06:13:02,551 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 06:13:02,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2022-07-23 06:13:02,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e9d253c/89f5971f3f5a4aff83b15d98dc78679e/FLAG5f3ed44d7 [2022-07-23 06:13:03,135 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 06:13:03,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2022-07-23 06:13:03,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e9d253c/89f5971f3f5a4aff83b15d98dc78679e/FLAG5f3ed44d7 [2022-07-23 06:13:03,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e9d253c/89f5971f3f5a4aff83b15d98dc78679e [2022-07-23 06:13:03,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 06:13:03,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 06:13:03,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 06:13:03,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 06:13:03,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 06:13:03,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:13:03" (1/1) ... [2022-07-23 06:13:03,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df7eea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:03, skipping insertion in model container [2022-07-23 06:13:03,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:13:03" (1/1) ... [2022-07-23 06:13:03,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 06:13:03,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 06:13:03,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 06:13:03,878 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-23 06:13:03,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@222b7484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:03, skipping insertion in model container [2022-07-23 06:13:03,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 06:13:03,880 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-23 06:13:03,881 INFO L158 Benchmark]: Toolchain (without parser) took 422.56ms. Allocated memory is still 90.2MB. Free memory was 68.1MB in the beginning and 60.8MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 06:13:03,882 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory is still 68.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 06:13:03,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.76ms. Allocated memory is still 90.2MB. Free memory was 67.9MB in the beginning and 61.0MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 06:13:03,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory is still 68.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 420.76ms. Allocated memory is still 90.2MB. Free memory was 67.9MB in the beginning and 61.0MB in the end (delta: 6.8MB). 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_test22_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 06:13:05,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 06:13:05,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 06:13:05,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 06:13:05,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 06:13:05,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 06:13:05,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 06:13:05,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 06:13:05,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 06:13:05,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 06:13:05,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 06:13:05,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 06:13:05,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 06:13:05,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 06:13:05,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 06:13:05,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 06:13:05,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 06:13:05,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 06:13:05,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 06:13:05,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 06:13:05,786 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 06:13:05,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 06:13:05,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 06:13:05,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 06:13:05,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 06:13:05,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 06:13:05,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 06:13:05,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 06:13:05,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 06:13:05,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 06:13:05,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 06:13:05,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 06:13:05,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 06:13:05,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 06:13:05,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 06:13:05,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 06:13:05,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 06:13:05,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 06:13:05,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 06:13:05,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 06:13:05,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 06:13:05,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 06:13:05,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-23 06:13:05,850 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 06:13:05,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 06:13:05,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 06:13:05,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 06:13:05,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 06:13:05,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 06:13:05,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 06:13:05,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 06:13:05,854 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 06:13:05,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 06:13:05,855 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 06:13:05,855 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 06:13:05,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 06:13:05,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 06:13:05,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 06:13:05,856 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 06:13:05,856 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 06:13:05,856 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 06:13:05,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 06:13:05,857 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 06:13:05,857 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 06:13:05,857 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 06:13:05,858 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 06:13:05,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 06:13:05,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 06:13:05,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 06:13:05,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 06:13:05,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 06:13:05,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 06:13:05,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 06:13:05,859 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 06:13:05,860 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 06:13:05,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 06:13:05,860 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c [2022-07-23 06:13:06,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 06:13:06,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 06:13:06,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 06:13:06,272 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 06:13:06,272 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 06:13:06,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2022-07-23 06:13:06,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97251ee13/117b256ebb3348f7939e1a7c95ef460a/FLAG5dcd1bd78 [2022-07-23 06:13:06,826 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 06:13:06,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2022-07-23 06:13:06,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97251ee13/117b256ebb3348f7939e1a7c95ef460a/FLAG5dcd1bd78 [2022-07-23 06:13:07,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97251ee13/117b256ebb3348f7939e1a7c95ef460a [2022-07-23 06:13:07,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 06:13:07,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 06:13:07,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 06:13:07,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 06:13:07,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 06:13:07,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:13:07" (1/1) ... [2022-07-23 06:13:07,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a344787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07, skipping insertion in model container [2022-07-23 06:13:07,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:13:07" (1/1) ... [2022-07-23 06:13:07,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 06:13:07,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 06:13:07,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 06:13:07,805 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 06:13:07,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 06:13:07,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 06:13:07,887 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 06:13:07,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 06:13:07,963 INFO L208 MainTranslator]: Completed translation [2022-07-23 06:13:07,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07 WrapperNode [2022-07-23 06:13:07,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 06:13:07,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 06:13:07,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 06:13:07,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 06:13:07,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07" (1/1) ... [2022-07-23 06:13:08,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07" (1/1) ... [2022-07-23 06:13:08,041 INFO L137 Inliner]: procedures = 165, calls = 69, calls flagged for inlining = 23, calls inlined = 15, statements flattened = 99 [2022-07-23 06:13:08,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 06:13:08,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 06:13:08,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 06:13:08,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 06:13:08,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07" (1/1) ... [2022-07-23 06:13:08,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07" (1/1) ... [2022-07-23 06:13:08,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07" (1/1) ... [2022-07-23 06:13:08,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07" (1/1) ... [2022-07-23 06:13:08,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07" (1/1) ... [2022-07-23 06:13:08,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07" (1/1) ... [2022-07-23 06:13:08,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07" (1/1) ... [2022-07-23 06:13:08,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 06:13:08,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 06:13:08,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 06:13:08,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 06:13:08,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07" (1/1) ... [2022-07-23 06:13:08,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 06:13:08,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 06:13:08,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-23 06:13:08,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-23 06:13:08,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 06:13:08,169 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-07-23 06:13:08,169 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-07-23 06:13:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-23 06:13:08,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-23 06:13:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 06:13:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 06:13:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 06:13:08,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 06:13:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 06:13:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 06:13:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-23 06:13:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 06:13:08,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 06:13:08,322 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 06:13:08,336 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 06:13:08,700 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 06:13:08,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 06:13:08,712 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-23 06:13:08,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:13:08 BoogieIcfgContainer [2022-07-23 06:13:08,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 06:13:08,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 06:13:08,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 06:13:08,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 06:13:08,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 06:13:07" (1/3) ... [2022-07-23 06:13:08,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8ded32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:13:08, skipping insertion in model container [2022-07-23 06:13:08,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:13:07" (2/3) ... [2022-07-23 06:13:08,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8ded32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:13:08, skipping insertion in model container [2022-07-23 06:13:08,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:13:08" (3/3) ... [2022-07-23 06:13:08,721 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_1-2.i [2022-07-23 06:13:08,734 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 06:13:08,734 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2022-07-23 06:13:08,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 06:13:08,774 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4e354129, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6baad7c2 [2022-07-23 06:13:08,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-07-23 06:13:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 69 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:08,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 06:13:08,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:08,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:08,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash -668549309, now seen corresponding path program 1 times [2022-07-23 06:13:08,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:08,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257028946] [2022-07-23 06:13:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:08,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:08,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:08,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:08,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 06:13:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:08,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 06:13:08,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:08,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:13:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:09,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:09,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:09,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257028946] [2022-07-23 06:13:09,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257028946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:09,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:09,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 06:13:09,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282948154] [2022-07-23 06:13:09,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:09,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 06:13:09,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:09,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 06:13:09,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 06:13:09,049 INFO L87 Difference]: Start difference. First operand has 73 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 69 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:09,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:09,431 INFO L93 Difference]: Finished difference Result 181 states and 196 transitions. [2022-07-23 06:13:09,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 06:13:09,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-07-23 06:13:09,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:09,441 INFO L225 Difference]: With dead ends: 181 [2022-07-23 06:13:09,441 INFO L226 Difference]: Without dead ends: 173 [2022-07-23 06:13:09,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 06:13:09,446 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 139 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:09,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 320 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 06:13:09,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-23 06:13:09,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 76. [2022-07-23 06:13:09,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.58) internal successors, (79), 71 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:13:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2022-07-23 06:13:09,482 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 10 [2022-07-23 06:13:09,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:09,482 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2022-07-23 06:13:09,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:09,483 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2022-07-23 06:13:09,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 06:13:09,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:09,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:09,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:09,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:09,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:09,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash -639920158, now seen corresponding path program 1 times [2022-07-23 06:13:09,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:09,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787707343] [2022-07-23 06:13:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:09,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:09,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:09,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:09,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 06:13:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:09,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 06:13:09,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:09,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:09,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:09,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787707343] [2022-07-23 06:13:09,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787707343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:09,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:09,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 06:13:09,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779103287] [2022-07-23 06:13:09,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:09,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 06:13:09,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:09,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 06:13:09,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 06:13:09,816 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:09,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:09,838 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2022-07-23 06:13:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 06:13:09,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-07-23 06:13:09,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:09,840 INFO L225 Difference]: With dead ends: 112 [2022-07-23 06:13:09,840 INFO L226 Difference]: Without dead ends: 112 [2022-07-23 06:13:09,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 06:13:09,842 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 40 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:09,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 303 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 06:13:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-23 06:13:09,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 74. [2022-07-23 06:13:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 69 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:13:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2022-07-23 06:13:09,849 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 10 [2022-07-23 06:13:09,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:09,850 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2022-07-23 06:13:09,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:09,850 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2022-07-23 06:13:09,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 06:13:09,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:09,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:09,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-23 06:13:10,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:10,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:10,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:10,061 INFO L85 PathProgramCache]: Analyzing trace with hash 749807950, now seen corresponding path program 1 times [2022-07-23 06:13:10,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:10,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601348927] [2022-07-23 06:13:10,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:10,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:10,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:10,064 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:10,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 06:13:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:10,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 06:13:10,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:10,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:13:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:10,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:10,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:10,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601348927] [2022-07-23 06:13:10,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601348927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:10,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:10,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 06:13:10,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055138970] [2022-07-23 06:13:10,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:10,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 06:13:10,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:10,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 06:13:10,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 06:13:10,268 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:10,627 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2022-07-23 06:13:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 06:13:10,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-07-23 06:13:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:10,629 INFO L225 Difference]: With dead ends: 149 [2022-07-23 06:13:10,629 INFO L226 Difference]: Without dead ends: 149 [2022-07-23 06:13:10,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-23 06:13:10,631 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 115 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:10,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 427 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 06:13:10,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-07-23 06:13:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 73. [2022-07-23 06:13:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.530612244897959) internal successors, (75), 68 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:13:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2022-07-23 06:13:10,639 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 11 [2022-07-23 06:13:10,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:10,640 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2022-07-23 06:13:10,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:10,640 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2022-07-23 06:13:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-23 06:13:10,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:10,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:10,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:10,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:10,851 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:10,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:10,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1769183241, now seen corresponding path program 1 times [2022-07-23 06:13:10,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:10,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166321548] [2022-07-23 06:13:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:10,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:10,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:10,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:10,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 06:13:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:10,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 06:13:10,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:10,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:10,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:10,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166321548] [2022-07-23 06:13:10,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166321548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:10,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:10,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 06:13:10,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555602645] [2022-07-23 06:13:10,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:10,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 06:13:10,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:10,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 06:13:10,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 06:13:10,946 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:10,967 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2022-07-23 06:13:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 06:13:10,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-07-23 06:13:10,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:10,969 INFO L225 Difference]: With dead ends: 111 [2022-07-23 06:13:10,969 INFO L226 Difference]: Without dead ends: 111 [2022-07-23 06:13:10,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 06:13:10,970 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 56 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:10,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 388 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 06:13:10,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-07-23 06:13:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2022-07-23 06:13:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.510204081632653) internal successors, (74), 68 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:13:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2022-07-23 06:13:10,976 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 12 [2022-07-23 06:13:10,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:10,976 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2022-07-23 06:13:10,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2022-07-23 06:13:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-23 06:13:10,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:10,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:10,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:11,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:11,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:11,189 INFO L85 PathProgramCache]: Analyzing trace with hash -782973720, now seen corresponding path program 1 times [2022-07-23 06:13:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:11,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445642307] [2022-07-23 06:13:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:11,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:11,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:11,192 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:11,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 06:13:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:11,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 06:13:11,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:11,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:11,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:11,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445642307] [2022-07-23 06:13:11,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445642307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:11,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:11,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 06:13:11,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671717618] [2022-07-23 06:13:11,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:11,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 06:13:11,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:11,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 06:13:11,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 06:13:11,275 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:11,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:11,301 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2022-07-23 06:13:11,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 06:13:11,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-07-23 06:13:11,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:11,302 INFO L225 Difference]: With dead ends: 83 [2022-07-23 06:13:11,302 INFO L226 Difference]: Without dead ends: 83 [2022-07-23 06:13:11,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 06:13:11,303 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 12 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:11,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 219 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 06:13:11,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-23 06:13:11,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2022-07-23 06:13:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 70 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:13:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2022-07-23 06:13:11,309 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 12 [2022-07-23 06:13:11,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:11,310 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2022-07-23 06:13:11,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:11,310 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2022-07-23 06:13:11,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-23 06:13:11,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:11,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:11,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:11,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:11,526 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:11,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash -816988662, now seen corresponding path program 1 times [2022-07-23 06:13:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:11,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566821558] [2022-07-23 06:13:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:11,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:11,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:11,529 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:11,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 06:13:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:11,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 06:13:11,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:11,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:11,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:11,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566821558] [2022-07-23 06:13:11,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566821558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:11,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:11,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 06:13:11,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782122109] [2022-07-23 06:13:11,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:11,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 06:13:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:11,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 06:13:11,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 06:13:11,602 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:11,698 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-07-23 06:13:11,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 06:13:11,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-23 06:13:11,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:11,699 INFO L225 Difference]: With dead ends: 78 [2022-07-23 06:13:11,699 INFO L226 Difference]: Without dead ends: 69 [2022-07-23 06:13:11,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 06:13:11,700 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 8 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:11,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 166 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 06:13:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-23 06:13:11,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-07-23 06:13:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 65 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2022-07-23 06:13:11,705 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 14 [2022-07-23 06:13:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:11,706 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2022-07-23 06:13:11,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2022-07-23 06:13:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-23 06:13:11,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:11,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:11,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:11,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:11,917 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:11,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:11,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1730388367, now seen corresponding path program 1 times [2022-07-23 06:13:11,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:11,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748288640] [2022-07-23 06:13:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:11,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:11,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:11,919 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:11,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 06:13:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:11,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 06:13:11,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:12,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:12,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:12,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748288640] [2022-07-23 06:13:12,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748288640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:12,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:12,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 06:13:12,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868560101] [2022-07-23 06:13:12,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:12,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 06:13:12,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:12,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 06:13:12,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 06:13:12,006 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:12,025 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2022-07-23 06:13:12,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 06:13:12,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-23 06:13:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:12,027 INFO L225 Difference]: With dead ends: 70 [2022-07-23 06:13:12,027 INFO L226 Difference]: Without dead ends: 70 [2022-07-23 06:13:12,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 06:13:12,028 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:12,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 157 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 06:13:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-23 06:13:12,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-07-23 06:13:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 66 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2022-07-23 06:13:12,033 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 16 [2022-07-23 06:13:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:12,033 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2022-07-23 06:13:12,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2022-07-23 06:13:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-23 06:13:12,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:12,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:12,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:12,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:12,244 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:12,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:12,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2133276344, now seen corresponding path program 1 times [2022-07-23 06:13:12,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:12,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823247372] [2022-07-23 06:13:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:12,245 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:12,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:12,246 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:12,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-23 06:13:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:12,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 06:13:12,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:12,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:13:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:12,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:12,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823247372] [2022-07-23 06:13:12,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823247372] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 06:13:12,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 06:13:12,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-23 06:13:12,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420591792] [2022-07-23 06:13:12,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 06:13:12,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 06:13:12,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:12,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 06:13:12,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 06:13:12,406 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:12,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:12,468 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-07-23 06:13:12,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 06:13:12,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-23 06:13:12,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:12,469 INFO L225 Difference]: With dead ends: 73 [2022-07-23 06:13:12,469 INFO L226 Difference]: Without dead ends: 73 [2022-07-23 06:13:12,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-23 06:13:12,470 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 108 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:12,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 347 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 06:13:12,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-23 06:13:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-07-23 06:13:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.48) internal successors, (74), 69 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-07-23 06:13:12,474 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 17 [2022-07-23 06:13:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:12,474 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-07-23 06:13:12,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-07-23 06:13:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-23 06:13:12,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:12,475 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:12,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:12,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:12,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:12,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:12,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1089714225, now seen corresponding path program 2 times [2022-07-23 06:13:12,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:12,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667636971] [2022-07-23 06:13:12,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 06:13:12,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:12,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:12,688 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:12,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-23 06:13:12,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 06:13:12,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 06:13:12,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 06:13:12,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:12,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:13:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 06:13:12,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:12,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:12,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667636971] [2022-07-23 06:13:12,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667636971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:12,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:12,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 06:13:12,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548342867] [2022-07-23 06:13:12,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:12,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 06:13:12,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:12,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 06:13:12,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-23 06:13:12,819 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:13,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:13,156 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2022-07-23 06:13:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 06:13:13,157 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-07-23 06:13:13,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:13,157 INFO L225 Difference]: With dead ends: 137 [2022-07-23 06:13:13,157 INFO L226 Difference]: Without dead ends: 137 [2022-07-23 06:13:13,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-23 06:13:13,158 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 143 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:13,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 393 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 06:13:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-07-23 06:13:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 72. [2022-07-23 06:13:13,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 50 states have (on average 1.46) internal successors, (73), 68 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2022-07-23 06:13:13,163 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 20 [2022-07-23 06:13:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:13,163 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2022-07-23 06:13:13,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2022-07-23 06:13:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-23 06:13:13,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:13,164 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:13,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-07-23 06:13:13,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:13,374 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:13,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:13,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1089714226, now seen corresponding path program 1 times [2022-07-23 06:13:13,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:13,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030228180] [2022-07-23 06:13:13,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:13,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:13,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:13,377 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:13,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-23 06:13:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:13,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 06:13:13,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:13,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:13:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:13,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030228180] [2022-07-23 06:13:13,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030228180] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 06:13:13,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 06:13:13,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-23 06:13:13,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422013391] [2022-07-23 06:13:13,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 06:13:13,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 06:13:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:13,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 06:13:13,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-23 06:13:13,709 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:13,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:13,929 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-07-23 06:13:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-23 06:13:13,930 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-07-23 06:13:13,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:13,931 INFO L225 Difference]: With dead ends: 78 [2022-07-23 06:13:13,931 INFO L226 Difference]: Without dead ends: 78 [2022-07-23 06:13:13,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-07-23 06:13:13,933 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 106 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:13,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 563 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 06:13:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-23 06:13:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-07-23 06:13:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 74 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2022-07-23 06:13:13,947 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 20 [2022-07-23 06:13:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:13,947 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2022-07-23 06:13:13,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2022-07-23 06:13:13,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-23 06:13:13,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:13,949 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:13,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:14,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:14,159 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:14,159 INFO L85 PathProgramCache]: Analyzing trace with hash 335305426, now seen corresponding path program 2 times [2022-07-23 06:13:14,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:14,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595442022] [2022-07-23 06:13:14,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 06:13:14,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:14,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:14,161 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:14,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-23 06:13:14,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 06:13:14,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 06:13:14,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-23 06:13:14,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:14,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:13:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-23 06:13:14,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:14,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:14,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595442022] [2022-07-23 06:13:14,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595442022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:14,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:14,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 06:13:14,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152371001] [2022-07-23 06:13:14,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:14,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 06:13:14,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:14,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 06:13:14,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-23 06:13:14,430 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:14,829 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2022-07-23 06:13:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 06:13:14,830 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-07-23 06:13:14,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:14,831 INFO L225 Difference]: With dead ends: 156 [2022-07-23 06:13:14,831 INFO L226 Difference]: Without dead ends: 156 [2022-07-23 06:13:14,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-23 06:13:14,832 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 189 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:14,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 613 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 06:13:14,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-23 06:13:14,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 77. [2022-07-23 06:13:14,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 73 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:14,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2022-07-23 06:13:14,843 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 26 [2022-07-23 06:13:14,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:14,844 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2022-07-23 06:13:14,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:14,844 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2022-07-23 06:13:14,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-23 06:13:14,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:14,845 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:14,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:15,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:15,054 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:15,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:15,055 INFO L85 PathProgramCache]: Analyzing trace with hash 104459153, now seen corresponding path program 1 times [2022-07-23 06:13:15,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:15,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764268400] [2022-07-23 06:13:15,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:15,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:15,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:15,057 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:15,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-23 06:13:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:15,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 06:13:15,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:15,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:13:15,781 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:15,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:15,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764268400] [2022-07-23 06:13:15,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764268400] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 06:13:15,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 06:13:15,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-23 06:13:15,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316220171] [2022-07-23 06:13:15,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 06:13:15,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-23 06:13:15,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:15,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-23 06:13:15,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2022-07-23 06:13:15,784 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:16,217 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2022-07-23 06:13:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-23 06:13:16,218 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-07-23 06:13:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:16,219 INFO L225 Difference]: With dead ends: 83 [2022-07-23 06:13:16,219 INFO L226 Difference]: Without dead ends: 83 [2022-07-23 06:13:16,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2022-07-23 06:13:16,220 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 104 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:16,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 957 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 06:13:16,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-23 06:13:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-23 06:13:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 79 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2022-07-23 06:13:16,222 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 28 [2022-07-23 06:13:16,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:16,223 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2022-07-23 06:13:16,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:16,223 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2022-07-23 06:13:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-23 06:13:16,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:16,224 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:16,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:16,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:16,424 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:16,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:16,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1246096945, now seen corresponding path program 2 times [2022-07-23 06:13:16,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:16,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177173285] [2022-07-23 06:13:16,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 06:13:16,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:16,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:16,426 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:16,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-23 06:13:16,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 06:13:16,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 06:13:16,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 06:13:16,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 06:13:16,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:16,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:16,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177173285] [2022-07-23 06:13:16,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177173285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:16,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:16,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 06:13:16,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737574212] [2022-07-23 06:13:16,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:16,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 06:13:16,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 06:13:16,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 06:13:16,582 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:16,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:16,609 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2022-07-23 06:13:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 06:13:16,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-07-23 06:13:16,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:16,611 INFO L225 Difference]: With dead ends: 83 [2022-07-23 06:13:16,611 INFO L226 Difference]: Without dead ends: 83 [2022-07-23 06:13:16,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 06:13:16,612 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 95 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:16,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 228 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 06:13:16,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-23 06:13:16,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-23 06:13:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 79 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2022-07-23 06:13:16,615 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 34 [2022-07-23 06:13:16,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:16,615 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2022-07-23 06:13:16,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:16,615 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2022-07-23 06:13:16,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-23 06:13:16,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:16,616 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:16,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:16,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:16,831 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:16,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:16,831 INFO L85 PathProgramCache]: Analyzing trace with hash 652031296, now seen corresponding path program 1 times [2022-07-23 06:13:16,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:16,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300170615] [2022-07-23 06:13:16,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:16,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:16,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:16,833 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:16,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-23 06:13:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:17,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 06:13:17,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:17,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:13:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 06:13:17,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:17,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:17,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300170615] [2022-07-23 06:13:17,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300170615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:17,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:17,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 06:13:17,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587147527] [2022-07-23 06:13:17,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:17,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 06:13:17,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:17,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 06:13:17,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-23 06:13:17,101 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:17,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:17,321 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2022-07-23 06:13:17,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 06:13:17,322 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-23 06:13:17,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:17,322 INFO L225 Difference]: With dead ends: 87 [2022-07-23 06:13:17,322 INFO L226 Difference]: Without dead ends: 87 [2022-07-23 06:13:17,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-23 06:13:17,323 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 113 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:17,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 244 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 06:13:17,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-23 06:13:17,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2022-07-23 06:13:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 77 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2022-07-23 06:13:17,325 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 36 [2022-07-23 06:13:17,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:17,326 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2022-07-23 06:13:17,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2022-07-23 06:13:17,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-23 06:13:17,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:17,326 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:17,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:17,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:17,536 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:17,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:17,536 INFO L85 PathProgramCache]: Analyzing trace with hash 652031297, now seen corresponding path program 1 times [2022-07-23 06:13:17,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:17,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405303458] [2022-07-23 06:13:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:17,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:17,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:17,538 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:17,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-23 06:13:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:17,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-23 06:13:17,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:17,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:13:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 06:13:17,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:17,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:17,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405303458] [2022-07-23 06:13:17,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405303458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:17,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:17,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 06:13:17,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79017738] [2022-07-23 06:13:17,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:17,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 06:13:17,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:17,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 06:13:17,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-23 06:13:17,900 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:18,136 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2022-07-23 06:13:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 06:13:18,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-23 06:13:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:18,138 INFO L225 Difference]: With dead ends: 79 [2022-07-23 06:13:18,138 INFO L226 Difference]: Without dead ends: 79 [2022-07-23 06:13:18,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-23 06:13:18,139 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 147 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:18,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 278 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 06:13:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-23 06:13:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-07-23 06:13:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 75 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2022-07-23 06:13:18,142 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 36 [2022-07-23 06:13:18,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:18,142 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2022-07-23 06:13:18,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2022-07-23 06:13:18,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-23 06:13:18,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:18,144 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:18,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:18,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:18,352 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:18,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:18,352 INFO L85 PathProgramCache]: Analyzing trace with hash 601347293, now seen corresponding path program 1 times [2022-07-23 06:13:18,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:18,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116313263] [2022-07-23 06:13:18,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:18,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:18,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:18,354 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:18,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-23 06:13:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:18,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 06:13:18,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 06:13:18,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:18,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:18,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116313263] [2022-07-23 06:13:18,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116313263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:18,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:18,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 06:13:18,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880669646] [2022-07-23 06:13:18,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:18,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 06:13:18,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 06:13:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 06:13:18,591 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:18,637 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2022-07-23 06:13:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 06:13:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-23 06:13:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:18,638 INFO L225 Difference]: With dead ends: 79 [2022-07-23 06:13:18,638 INFO L226 Difference]: Without dead ends: 79 [2022-07-23 06:13:18,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-23 06:13:18,639 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 138 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:18,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 213 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 06:13:18,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-23 06:13:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-07-23 06:13:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 74 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2022-07-23 06:13:18,641 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 36 [2022-07-23 06:13:18,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:18,641 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2022-07-23 06:13:18,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 06:13:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2022-07-23 06:13:18,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-23 06:13:18,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:18,642 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:18,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:18,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:18,851 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash -499536070, now seen corresponding path program 1 times [2022-07-23 06:13:18,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:18,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496369508] [2022-07-23 06:13:18,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:18,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:18,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:18,854 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:18,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-23 06:13:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:19,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-23 06:13:19,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:19,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:13:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 06:13:19,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:19,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:19,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496369508] [2022-07-23 06:13:19,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496369508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:19,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:19,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 06:13:19,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920796294] [2022-07-23 06:13:19,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:19,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 06:13:19,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 06:13:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-23 06:13:19,153 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:19,338 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2022-07-23 06:13:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 06:13:19,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-23 06:13:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:19,339 INFO L225 Difference]: With dead ends: 87 [2022-07-23 06:13:19,339 INFO L226 Difference]: Without dead ends: 87 [2022-07-23 06:13:19,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-07-23 06:13:19,340 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 120 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:19,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 155 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2022-07-23 06:13:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-23 06:13:19,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2022-07-23 06:13:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 72 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2022-07-23 06:13:19,343 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 44 [2022-07-23 06:13:19,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:19,343 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2022-07-23 06:13:19,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:19,343 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2022-07-23 06:13:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-23 06:13:19,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:19,344 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:19,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:19,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:19,545 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:19,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:19,545 INFO L85 PathProgramCache]: Analyzing trace with hash -499536069, now seen corresponding path program 1 times [2022-07-23 06:13:19,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:19,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043868147] [2022-07-23 06:13:19,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:19,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:19,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:19,547 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:19,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-23 06:13:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:19,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-23 06:13:19,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:19,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:13:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 06:13:19,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:19,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:19,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043868147] [2022-07-23 06:13:19,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043868147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:19,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:19,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 06:13:19,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947787357] [2022-07-23 06:13:19,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:19,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 06:13:19,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:19,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 06:13:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-23 06:13:19,966 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:20,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:20,170 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2022-07-23 06:13:20,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 06:13:20,171 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-23 06:13:20,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:20,171 INFO L225 Difference]: With dead ends: 79 [2022-07-23 06:13:20,171 INFO L226 Difference]: Without dead ends: 79 [2022-07-23 06:13:20,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-23 06:13:20,172 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 154 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:20,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 213 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2022-07-23 06:13:20,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-23 06:13:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2022-07-23 06:13:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 70 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2022-07-23 06:13:20,174 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 44 [2022-07-23 06:13:20,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:20,175 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2022-07-23 06:13:20,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:20,175 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2022-07-23 06:13:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-23 06:13:20,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:20,176 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:20,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:20,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:20,384 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:20,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:20,384 INFO L85 PathProgramCache]: Analyzing trace with hash 983653340, now seen corresponding path program 1 times [2022-07-23 06:13:20,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:20,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718027977] [2022-07-23 06:13:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:20,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:20,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:20,386 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:20,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-23 06:13:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:20,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 06:13:20,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 06:13:20,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:20,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:20,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718027977] [2022-07-23 06:13:20,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718027977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:20,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:20,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 06:13:20,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567115510] [2022-07-23 06:13:20,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:20,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 06:13:20,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:20,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 06:13:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 06:13:20,640 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:20,684 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2022-07-23 06:13:20,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 06:13:20,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2022-07-23 06:13:20,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:20,686 INFO L225 Difference]: With dead ends: 75 [2022-07-23 06:13:20,686 INFO L226 Difference]: Without dead ends: 75 [2022-07-23 06:13:20,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-23 06:13:20,687 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 105 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:20,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 214 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 06:13:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-23 06:13:20,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-07-23 06:13:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 70 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:20,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2022-07-23 06:13:20,691 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 46 [2022-07-23 06:13:20,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:20,691 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2022-07-23 06:13:20,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2022-07-23 06:13:20,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-23 06:13:20,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:20,693 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:20,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:20,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:20,904 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:20,905 INFO L85 PathProgramCache]: Analyzing trace with hash 567271038, now seen corresponding path program 1 times [2022-07-23 06:13:20,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:20,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123482848] [2022-07-23 06:13:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:20,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:20,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:20,908 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:20,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-23 06:13:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:21,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-23 06:13:21,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:21,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:13:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 06:13:21,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:21,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:21,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123482848] [2022-07-23 06:13:21,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123482848] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:21,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:21,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 06:13:21,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803200449] [2022-07-23 06:13:21,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:21,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 06:13:21,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:21,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 06:13:21,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-23 06:13:21,329 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:21,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:21,526 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2022-07-23 06:13:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 06:13:21,526 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2022-07-23 06:13:21,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:21,527 INFO L225 Difference]: With dead ends: 79 [2022-07-23 06:13:21,527 INFO L226 Difference]: Without dead ends: 79 [2022-07-23 06:13:21,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-07-23 06:13:21,528 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 96 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:21,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 221 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2022-07-23 06:13:21,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-23 06:13:21,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2022-07-23 06:13:21,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 68 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2022-07-23 06:13:21,530 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 50 [2022-07-23 06:13:21,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:21,530 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2022-07-23 06:13:21,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2022-07-23 06:13:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-23 06:13:21,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:21,531 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:21,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:21,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:21,748 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:21,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:21,749 INFO L85 PathProgramCache]: Analyzing trace with hash 567271039, now seen corresponding path program 1 times [2022-07-23 06:13:21,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:21,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451675421] [2022-07-23 06:13:21,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:21,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:21,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:21,750 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:21,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-23 06:13:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:21,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-23 06:13:21,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:21,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:13:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 06:13:22,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:22,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:22,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451675421] [2022-07-23 06:13:22,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451675421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:22,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:22,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-23 06:13:22,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795468307] [2022-07-23 06:13:22,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:22,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 06:13:22,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:22,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 06:13:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-23 06:13:22,251 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:22,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:22,483 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2022-07-23 06:13:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 06:13:22,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2022-07-23 06:13:22,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:22,484 INFO L225 Difference]: With dead ends: 77 [2022-07-23 06:13:22,484 INFO L226 Difference]: Without dead ends: 77 [2022-07-23 06:13:22,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-07-23 06:13:22,485 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 153 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:22,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 207 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2022-07-23 06:13:22,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-23 06:13:22,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2022-07-23 06:13:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 66 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:22,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2022-07-23 06:13:22,487 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 50 [2022-07-23 06:13:22,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:22,488 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2022-07-23 06:13:22,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:22,488 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2022-07-23 06:13:22,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-23 06:13:22,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:22,488 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:22,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:22,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:22,700 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:22,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1124776918, now seen corresponding path program 1 times [2022-07-23 06:13:22,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:22,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381133106] [2022-07-23 06:13:22,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:22,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:22,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:22,702 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:22,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-23 06:13:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:22,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-23 06:13:22,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 06:13:23,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:23,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:23,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381133106] [2022-07-23 06:13:23,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381133106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:23,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:23,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 06:13:23,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606503531] [2022-07-23 06:13:23,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:23,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 06:13:23,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 06:13:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-23 06:13:23,295 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 11 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:23,480 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2022-07-23 06:13:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 06:13:23,480 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2022-07-23 06:13:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:23,481 INFO L225 Difference]: With dead ends: 76 [2022-07-23 06:13:23,481 INFO L226 Difference]: Without dead ends: 76 [2022-07-23 06:13:23,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-23 06:13:23,482 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 160 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:23,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 209 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 6 Unchecked, 0.1s Time] [2022-07-23 06:13:23,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-23 06:13:23,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2022-07-23 06:13:23,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 62 states have (on average 1.096774193548387) internal successors, (68), 65 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2022-07-23 06:13:23,484 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 53 [2022-07-23 06:13:23,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:23,485 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2022-07-23 06:13:23,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:23,485 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2022-07-23 06:13:23,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-23 06:13:23,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:23,486 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:23,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:23,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:23,691 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash 350499748, now seen corresponding path program 1 times [2022-07-23 06:13:23,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:23,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673975485] [2022-07-23 06:13:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:23,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:23,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:23,693 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:23,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-23 06:13:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:23,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-23 06:13:23,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:24,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:24,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:24,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:24,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:24,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:24,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:24,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:24,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:24,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:24,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 06:13:24,095 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 06:13:24,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-07-23 06:13:28,120 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1565 (_ BitVec 8)) (v_ArrVal_1567 (_ BitVec 8))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_1565) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_1567)))) is different from true [2022-07-23 06:13:28,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:28,153 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:13:28,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 71 [2022-07-23 06:13:28,354 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:13:28,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 26 [2022-07-23 06:13:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 06:13:28,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:13:28,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:28,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673975485] [2022-07-23 06:13:28,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673975485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:13:28,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:13:28,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-23 06:13:28,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445966250] [2022-07-23 06:13:28,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:13:28,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-23 06:13:28,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:28,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-23 06:13:28,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=334, Unknown=2, NotChecked=36, Total=420 [2022-07-23 06:13:28,467 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:29,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:29,410 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2022-07-23 06:13:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-23 06:13:29,411 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2022-07-23 06:13:29,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:29,412 INFO L225 Difference]: With dead ends: 70 [2022-07-23 06:13:29,412 INFO L226 Difference]: Without dead ends: 70 [2022-07-23 06:13:29,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=136, Invalid=858, Unknown=2, NotChecked=60, Total=1056 [2022-07-23 06:13:29,413 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 100 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:29,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 455 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 89 Unchecked, 0.4s Time] [2022-07-23 06:13:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-23 06:13:29,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-07-23 06:13:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 65 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2022-07-23 06:13:29,417 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 54 [2022-07-23 06:13:29,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:29,417 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2022-07-23 06:13:29,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 19 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:29,417 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2022-07-23 06:13:29,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-23 06:13:29,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:29,418 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:29,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:29,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:13:29,632 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:29,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:29,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1105784610, now seen corresponding path program 1 times [2022-07-23 06:13:29,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:29,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515610466] [2022-07-23 06:13:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:29,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:29,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:29,635 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:29,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-23 06:13:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:30,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 120 conjunts are in the unsatisfiable core [2022-07-23 06:13:30,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:30,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-23 06:13:30,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-07-23 06:13:30,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:30,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:30,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:30,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:30,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:30,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:30,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:30,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:30,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:30,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:30,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:30,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:30,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:30,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:30,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:31,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:31,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:31,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:31,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:31,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:31,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:31,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:31,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:31,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:31,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:31,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-23 06:13:36,078 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1749 (_ BitVec 32)) (v_ArrVal_1748 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_1748) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_1749)) |c_#memory_$Pointer$.offset|)) is different from true [2022-07-23 06:13:36,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:36,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:36,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:36,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-23 06:13:36,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:36,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:36,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:36,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:36,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:36,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:36,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:36,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:36,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:36,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 45 [2022-07-23 06:13:36,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-23 06:13:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:36,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:13:37,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:37,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515610466] [2022-07-23 06:13:37,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515610466] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:13:37,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1930586392] [2022-07-23 06:13:37,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:37,121 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-23 06:13:37,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-23 06:13:37,127 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-23 06:13:37,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-07-23 06:13:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:37,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-23 06:13:37,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:37,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-23 06:13:37,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:37,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-07-23 06:13:37,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:37,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:37,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:37,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:37,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:37,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:37,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:37,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:37,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:37,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:37,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:37,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:37,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:37,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:38,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:38,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:38,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:38,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:38,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:38,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:38,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:38,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:38,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-23 06:13:41,178 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1944 (_ BitVec 32)) (v_ArrVal_1748 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_1748) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_1944)))) is different from true [2022-07-23 06:13:41,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:41,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:41,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:41,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-23 06:13:41,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 39 [2022-07-23 06:13:41,373 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:13:41,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-23 06:13:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:41,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:13:42,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1930586392] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:13:42,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 06:13:42,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37] total 42 [2022-07-23 06:13:42,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313112352] [2022-07-23 06:13:42,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 06:13:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-23 06:13:42,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:13:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-23 06:13:42,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2548, Unknown=3, NotChecked=206, Total=2970 [2022-07-23 06:13:42,489 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 43 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 41 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:13:46,975 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1944 (_ BitVec 32)) (v_ArrVal_1748 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_1748) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_1944)))) (exists ((v_ArrVal_1749 (_ BitVec 32)) (v_ArrVal_1748 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_1748) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_1749)) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-23 06:13:47,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:13:47,883 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2022-07-23 06:13:47,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-23 06:13:47,884 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 41 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-07-23 06:13:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:13:47,887 INFO L225 Difference]: With dead ends: 69 [2022-07-23 06:13:47,887 INFO L226 Difference]: Without dead ends: 69 [2022-07-23 06:13:47,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 85 SyntacticMatches, 8 SemanticMatches, 80 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=522, Invalid=5648, Unknown=4, NotChecked=468, Total=6642 [2022-07-23 06:13:47,889 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 227 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-23 06:13:47,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 598 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1433 Invalid, 0 Unknown, 211 Unchecked, 2.0s Time] [2022-07-23 06:13:47,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-23 06:13:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-07-23 06:13:47,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.064516129032258) internal successors, (66), 64 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:13:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2022-07-23 06:13:47,892 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 56 [2022-07-23 06:13:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:13:47,892 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2022-07-23 06:13:47,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 41 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:13:47,893 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2022-07-23 06:13:47,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-23 06:13:47,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:13:47,893 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:13:47,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-07-23 06:13:48,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-07-23 06:13:48,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-23 06:13:48,300 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:13:48,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:13:48,300 INFO L85 PathProgramCache]: Analyzing trace with hash -80415345, now seen corresponding path program 1 times [2022-07-23 06:13:48,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:13:48,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873704407] [2022-07-23 06:13:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:48,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:13:48,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:13:48,302 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:13:48,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-23 06:13:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:48,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 120 conjunts are in the unsatisfiable core [2022-07-23 06:13:48,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:48,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-23 06:13:48,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:48,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:48,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:48,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:49,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:49,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:49,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:49,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:49,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:49,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:49,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:49,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:49,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:49,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:49,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:49,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:49,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:49,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:49,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-23 06:13:55,271 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2139 (_ BitVec 32)) (v_ArrVal_2138 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2138) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2139)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-23 06:13:55,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:55,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:55,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:55,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-23 06:13:55,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:55,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:55,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:55,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:55,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:55,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:55,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:55,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:55,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:55,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 45 [2022-07-23 06:13:55,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-23 06:13:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:13:55,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:13:56,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:13:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873704407] [2022-07-23 06:13:56,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873704407] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:13:56,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1453371988] [2022-07-23 06:13:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:13:56,381 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-23 06:13:56,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-23 06:13:56,382 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-23 06:13:56,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-07-23 06:13:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:13:56,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-23 06:13:56,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:13:56,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-07-23 06:13:57,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,008 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:57,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:57,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:57,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:57,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:57,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:57,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:57,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:57,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:57,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:57,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:57,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:57,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-23 06:13:57,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:57,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-23 06:13:57,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:13:57,571 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-23 06:14:00,723 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2335 (_ BitVec 32)) (v_ArrVal_2138 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2138) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2335)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-23 06:14:00,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:14:00,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:14:00,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:14:00,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-23 06:14:00,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 39 [2022-07-23 06:14:00,927 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 06:14:00,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-23 06:14:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:14:01,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:14:02,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1453371988] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:14:02,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 06:14:02,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39] total 44 [2022-07-23 06:14:02,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836565898] [2022-07-23 06:14:02,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 06:14:02,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-23 06:14:02,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:14:02,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-23 06:14:02,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2637, Unknown=3, NotChecked=210, Total=3080 [2022-07-23 06:14:02,316 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 44 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 42 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:14:06,271 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2335 (_ BitVec 32)) (v_ArrVal_2138 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2138) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2335)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2139 (_ BitVec 32)) (v_ArrVal_2138 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2138) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2139)) |c_#memory_$Pointer$.base|))) is different from true [2022-07-23 06:14:06,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:14:06,933 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2022-07-23 06:14:06,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-23 06:14:06,934 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 42 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2022-07-23 06:14:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:14:06,934 INFO L225 Difference]: With dead ends: 65 [2022-07-23 06:14:06,935 INFO L226 Difference]: Without dead ends: 64 [2022-07-23 06:14:06,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 87 SyntacticMatches, 9 SemanticMatches, 67 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=449, Invalid=3849, Unknown=4, NotChecked=390, Total=4692 [2022-07-23 06:14:06,936 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 169 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-23 06:14:06,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 310 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1024 Invalid, 0 Unknown, 187 Unchecked, 1.9s Time] [2022-07-23 06:14:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-23 06:14:06,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-07-23 06:14:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:14:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2022-07-23 06:14:06,939 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 57 [2022-07-23 06:14:06,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:14:06,940 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2022-07-23 06:14:06,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 42 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:14:06,940 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2022-07-23 06:14:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-23 06:14:06,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:14:06,941 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:14:06,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-07-23 06:14:07,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-23 06:14:07,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:14:07,348 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-07-23 06:14:07,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:14:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash 151088322, now seen corresponding path program 1 times [2022-07-23 06:14:07,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:14:07,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813098906] [2022-07-23 06:14:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:14:07,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:14:07,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:14:07,351 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:14:07,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-23 06:14:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:14:07,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-23 06:14:07,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:14:07,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2022-07-23 06:14:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-23 06:14:08,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:14:08,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:14:08,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813098906] [2022-07-23 06:14:08,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813098906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:14:08,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:14:08,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-23 06:14:08,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006253037] [2022-07-23 06:14:08,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:14:08,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 06:14:08,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:14:08,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 06:14:08,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-23 06:14:08,132 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 12 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:14:08,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:14:08,150 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2022-07-23 06:14:08,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 06:14:08,151 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2022-07-23 06:14:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:14:08,152 INFO L225 Difference]: With dead ends: 63 [2022-07-23 06:14:08,152 INFO L226 Difference]: Without dead ends: 0 [2022-07-23 06:14:08,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-23 06:14:08,152 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 06:14:08,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 202 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 76 Unchecked, 0.0s Time] [2022-07-23 06:14:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-23 06:14:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-23 06:14:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 06:14:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-23 06:14:08,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2022-07-23 06:14:08,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:14:08,154 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 06:14:08,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:14:08,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-23 06:14:08,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-23 06:14:08,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (20 of 21 remaining) [2022-07-23 06:14:08,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (19 of 21 remaining) [2022-07-23 06:14:08,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 21 remaining) [2022-07-23 06:14:08,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 21 remaining) [2022-07-23 06:14:08,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 21 remaining) [2022-07-23 06:14:08,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 21 remaining) [2022-07-23 06:14:08,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 21 remaining) [2022-07-23 06:14:08,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 21 remaining) [2022-07-23 06:14:08,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 21 remaining) [2022-07-23 06:14:08,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 21 remaining) [2022-07-23 06:14:08,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (10 of 21 remaining) [2022-07-23 06:14:08,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (9 of 21 remaining) [2022-07-23 06:14:08,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (8 of 21 remaining) [2022-07-23 06:14:08,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (7 of 21 remaining) [2022-07-23 06:14:08,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE (6 of 21 remaining) [2022-07-23 06:14:08,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE (5 of 21 remaining) [2022-07-23 06:14:08,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (4 of 21 remaining) [2022-07-23 06:14:08,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 21 remaining) [2022-07-23 06:14:08,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 21 remaining) [2022-07-23 06:14:08,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 21 remaining) [2022-07-23 06:14:08,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 21 remaining) [2022-07-23 06:14:08,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-07-23 06:14:08,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:14:08,378 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:14:08,381 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-23 06:14:08,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 06:14:08 BoogieIcfgContainer [2022-07-23 06:14:08,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-23 06:14:08,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 06:14:08,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 06:14:08,385 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 06:14:08,385 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:13:08" (3/4) ... [2022-07-23 06:14:08,388 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-23 06:14:08,394 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2022-07-23 06:14:08,394 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure LDV_INIT_LIST_HEAD [2022-07-23 06:14:08,403 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2022-07-23 06:14:08,403 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-23 06:14:08,404 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-23 06:14:08,404 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-23 06:14:08,442 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 06:14:08,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 06:14:08,443 INFO L158 Benchmark]: Toolchain (without parser) took 61088.41ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 34.0MB in the beginning and 23.1MB in the end (delta: 11.0MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2022-07-23 06:14:08,444 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 38.2MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 06:14:08,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 607.71ms. Allocated memory is still 56.6MB. Free memory was 33.9MB in the beginning and 23.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 06:14:08,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.63ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 22.9MB in the beginning and 58.9MB in the end (delta: -36.0MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2022-07-23 06:14:08,444 INFO L158 Benchmark]: Boogie Preprocessor took 53.23ms. Allocated memory is still 77.6MB. Free memory was 58.9MB in the beginning and 56.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 06:14:08,445 INFO L158 Benchmark]: RCFGBuilder took 616.96ms. Allocated memory is still 77.6MB. Free memory was 56.8MB in the beginning and 39.1MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-23 06:14:08,445 INFO L158 Benchmark]: TraceAbstraction took 59668.06ms. Allocated memory is still 77.6MB. Free memory was 38.3MB in the beginning and 26.7MB in the end (delta: 11.6MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2022-07-23 06:14:08,445 INFO L158 Benchmark]: Witness Printer took 58.63ms. Allocated memory is still 77.6MB. Free memory was 26.7MB in the beginning and 23.1MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 06:14:08,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 38.2MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 607.71ms. Allocated memory is still 56.6MB. Free memory was 33.9MB in the beginning and 23.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.63ms. Allocated memory was 56.6MB in the beginning and 77.6MB in the end (delta: 21.0MB). Free memory was 22.9MB in the beginning and 58.9MB in the end (delta: -36.0MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.23ms. Allocated memory is still 77.6MB. Free memory was 58.9MB in the beginning and 56.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 616.96ms. Allocated memory is still 77.6MB. Free memory was 56.8MB in the beginning and 39.1MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 59668.06ms. Allocated memory is still 77.6MB. Free memory was 38.3MB in the beginning and 26.7MB in the end (delta: 11.6MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Witness Printer took 58.63ms. Allocated memory is still 77.6MB. Free memory was 26.7MB in the beginning and 23.1MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 73 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 59.6s, OverallIterations: 26, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2869 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2862 mSDsluCounter, 8600 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 607 IncrementalHoareTripleChecker+Unchecked, 6989 mSDsCounter, 240 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4819 IncrementalHoareTripleChecker+Invalid, 5666 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 240 mSolverCounterUnsat, 1611 mSDtfsCounter, 4819 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1183 GetRequests, 772 SyntacticMatches, 22 SemanticMatches, 389 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 2896 ImplicationChecksByTransitivity, 35.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=12, InterpolantAutomatonStates: 292, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 439 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 33.1s InterpolantComputationTime, 968 NumberOfCodeBlocks, 938 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1002 ConstructedInterpolants, 93 QuantifiedInterpolants, 7360 SizeOfPredicates, 439 NumberOfNonLiveVariables, 6322 ConjunctsInSsa, 854 ConjunctsInUnsatCore, 31 InterpolantComputations, 21 PerfectInterpolantSequences, 1697/2373 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 21 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-23 06:14:08,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE